Academic literature on the topic 'Finit Element Analysis'
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Journal articles on the topic "Finit Element Analysis"
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Hu, F., L. Q. Chen, B. Qi, and W. W. Chen. "Finit Element Analysis and Optimum Design of Time-Sharing 4WD Vehicle Main Reducer." Applied Mechanics and Materials 246-247 (December 2012): 692–96. http://dx.doi.org/10.4028/www.scientific.net/amm.246-247.692.
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By carrying on the stress and transform analysis of the box of a kind of main reducer which was self— designed and manufactured for vehicles, by ROMAX modeling get accurate bearing load and conducting ANSYS finite element analysis. it is shown that structure design of the main reducer box is very important for the intension capability of the box, and for the transmission functions of the main reducer. The hidden trouble of the main reducer transmission due to the designers was solved, which couldn’t estimate the transform of main reducer box by traditional design method, and provided the necessary basis for further optimizing and ameliorating the whole transfer case system. By using the UG software we constructed a complicated model of the box, and carried on a series of accurate intension and fatigued analyses for the model by using ANSYS software.
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Wang, Yu Ming, Min Feng Huang, Quan Zheng, Lei Lu, and Yu Chen. "Finit Element Analysis of Time-Sharing 4WD Vehicle Transfer Case Based on Romax." Applied Mechanics and Materials 80-81 (July 2011): 832–36. http://dx.doi.org/10.4028/www.scientific.net/amm.80-81.832.
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By carrying on the stress and transform analysis of the box of a kind of transfer case which was self-designed and manufactured for vehicles,by ROMAX modeling get accurate bearing load and conducting ANSYS finite element analysis. it is shown that structure design of the transfer case box is very important for the intension capability of the box,and for the transmission functions of the transfer case.The hidden trouble of the transfer case transmission due to the designers was solved,which couldn’t estimate the transform of transfer case box by traditional design method,and provided the necessary basis for further optimizing and ameliorating the whole transfer case system.We constructed a complicated model of the box by using the UG software,and carried on a series of accurate intension and fatigued analyses for the model by using AN SYS software.
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Macuta, Silviu, and Mirel Istratescu. "Modelling by Finite Element Analysis Method of Stress State Establishing for an Steel Alloy." Environment. Technology. Resources. Proceedings of the International Scientific and Practical Conference 3 (August 9, 2015): 34. http://dx.doi.org/10.17770/etr2013vol3.876.
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The paper presents some results about thetension state in samples subject to pure bending fatigue process. Numerical simulation based on finit elementmethod was used. The tension field induced by a verticaldeformation imposed at the sample ends was generatedon an original patented machine. The studies werecarried out on two steels currently used in pressurevessels industry. Experimental data are in good agreementwith the simulated ones.
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TAKABATAKE, Shin. "Finit-element analysis of two-dimensional peristaltic flows. 2nd Report, Pressure-flow characteristics." Transactions of the Japan Society of Mechanical Engineers Series B 56, no. 532 (1990): 3633–37. http://dx.doi.org/10.1299/kikaib.56.3633.
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Rathod, H. T., Md Shafiqul Islam, Bharath Rathod, and K. Sugantha Devi. "Finit element solution of Poisson Equation over Polygonal Domains using a novel auto mesh generation technique and an explicit integration scheme for linear convex quadrilaterals of cubic order Serendipity and Lagrange families." International Journal Of Engineering And Computer Science 7, no. 01 (2018): 23329–482. http://dx.doi.org/10.18535/ijecs/v7i1.01.
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This paper presents an explicit integration scheme to compute the stiffness matrix of twelve node and sixteen node linear convex quadrilateral finite elements of Serendipity and Lagrange families using an explicit integration scheme and discretisation of polygonal domain by such finite elements using a novel auto mesh generation technique, In finite element analysis, the boundary value problems governed by second order linear partial differential equations, the element stiffness matrices are expressed as integrals of the product of global derivatives over the linear convex quadrilateral region. These matrices can be shown to depend on the material properties matrices and the matrix of integrals with integrands as rational functions with polynomial numerator and the linear denominator (4+) in the bivariates over a 2-square (-1 ) with the nodes on the boundary and in the interior of this simple domain. The finite elements up to cubic order have nodes only on the boundary for Serendipity family and the finite elements with boundary as well as some interior nodes belong to the Lagrange family. The first order element is the bilinear convex quadrilateral finite element which is an exception and it belongs to both the families. We have for the present ,the cubic order finite elements which havee 12 boundary nodes at the nodal coordinates {(-1,-1),(1,-1),(1,1),(-1,1),(-1/3,-1), (1/3,-1),(1,-1/3),(1,1/3),(1/3,1),(-1/3,1),(-1,1/3),(-1,-1/3)} and the four interoior nodal coordinates at the points (-1/3,-1/3),(1/3,-1/3),(1/3,1/3),(-1/3,1/3)} in the local parametric space ( In this paper, we have computed the integrals of local derivative products with linear denominator (4+) in exact forms using the symbolic mathematics capabilities of MATLAB. The proposed explicit finite element integration scheme can be then applied to solve boundary value problems in continuum mechanics over convex polygonal domains. We have also developed a novel auto mesh generation technique of all 12-node and 16-node linear(straight edge) convex quadrilaterals for a polygonal domain which provides the nodal coordinates and the element connectivity. We have used the explicit integration scheme and this novel auto mesh generation technique to solve the Poisson equation u ,where u is an unknown physical variable and in with Dirichlet boundary conditions over the convex polygonal domain.
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Jiang, Ning, and Chuan Yang Wang. "Design and Simulation of Injection Mold for the Digital Camera Shell Based on Moldflow." Applied Mechanics and Materials 741 (March 2015): 215–22. http://dx.doi.org/10.4028/www.scientific.net/amm.741.215.
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The camera shell is analyzed by using Finit Element Method (FEM) to judge reliability of the structure. Static structural and explicit dynamics analysis are conducted. The results provide valuable reference for the structural optimization design. Three schemes for injection mold are developed. Injection moulding process of the shell is simulated by applying Moldflow. The volumetric shrinkage, shrink mark index, total deformation, fill time and clamping force are analyzed. The results show that combining Moldflow with FEM method can not only shorten the construction period, but also ensure the molding quality.
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Kabantsev, Oleg, Sergey Krylov, and Sergey Trofimov. "NUMERICAL ANALYSIS OF LONGITUDINAL REINFORCEMENT EFFECT ON RC SLAB PUNCHING SHEAR RESISTANCE BY STRENGTH AND CRACK PROPAGATION CRITERIA." International Journal for Computational Civil and Structural Engineering 17, no. 1 (2021): 21–33. http://dx.doi.org/10.22337/2587-9618-2021-17-1-21-33.
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he article deals with the influnce of longitudinal reinforcement of the support zone of reinforced concrete slabs on the strength and crack resistance under the criterion for punching failure. The evaluation of impact was carried out by the method of numerical studies based on finite-elementcomputational technologies. The results of physical experiments published in the scientificliterature are taken as the basis for the conducted research. The existing provisions of the existing domestic and foreign standards for the calculation of slab reinforced concrete structures according to the criterion for punching failure are considered. The main provisions of the applied finit element approach are presented, verificationis performed and the correctness of the applied technique is justified In the numerical studies, the forecast of strength and crack resistance was done for considered reinforced concrete slab structures; the results of numerical studies were compared with the data from physical experiments and the evaluation results based on the relevant domestic and foreign regulations. According to numerical studies results it was stated that longitudinal reinforcement of the tensile zone of slab structure has a significantimpact on both the level of load-bearing capacity and the scheme of crack formation and propagation. The results of the implemented studies justify the necessity to revise the national standards of structural analysis for reinforcement concrete slab structures under the criterion for punching failure.
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Bindea, M., Claudia Maria Chezan, and A. Puskas. "Numerical Analysis Of Flat Slabs With Spherical Voids Subjected To Shear Force." Journal of Applied Engineering Sciences 5, no. 1 (2015): 7–13. http://dx.doi.org/10.1515/jaes-2015-0001.
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Abstract Full flat slabs can be enhanced by using spherical voids to replace the unemployed concrete from the core part of the slab. Therefore we get low self-weighted slabs that can reach a high range of spans, a low material consumption compared to classical solutions used so far. On the other hand, the upsides of these slabs pale against the insecurity in design stage about their punching and shear force behaviour. In this paper it is presented a parametric study about shear force behaviour of flat slabs with spherical voids used in standard condition service. The study was made using the Atena 3D finit element design software, starting form a numerical model gauged on experimental results on real models – scale 1:1. Based on these lab results, the model’s validation was made by overlapping the load – displacement experimental curves on the curves yielded from numerical analyses. The results indicate that under a longitudinal reinforcement rate of lower than 0.50%, flat slabs with spherical voids don’t fail to shear force and over this value the capable shear force decreases in comparison with solid slabs, as the reinforcement rate increases.
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Rajput, Sunil G. "Finite Element Analysis of Twin Screw Extruder." Indian Journal of Applied Research 3, no. 6 (2011): 205–8. http://dx.doi.org/10.15373/2249555x/june2013/68.
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Magaña Del Toro, Roberto, Armando Rafael Hermosillo Arteaga, Miguel Pedro Romo Organista, and Jorge Carrera-Bolaños. "Análisis con elemento finito y remalleo fractal en geotecnia." Ingeniería, investigación y tecnología 12, no. 1 (2011): 103–18. http://dx.doi.org/10.22201/fi.25940732e.2011.12n1.011.
Full textDissertations / Theses on the topic "Finit Element Analysis"
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Bergström, Mikael. "Product Development and Finite Element Analysis of Polyurethane Press Shoe : Produktutveckling och finit element analys av press-sko i polyuretan." Thesis, Karlstads universitet, Fakulteten för hälsa, natur- och teknikvetenskap (from 2013), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-85657.
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The press-section of a paper machine holds several different types of press rolls. One of the many press roll variants is the Valmet produced press roll, ViscoNip. This press roll utilizes an extended nip in order to increase the amount of water removed. The extended press nip in ViscoNip is special since it is controllable by a pressurized polyurethane press shoe. The press shoe runs through the body of the press roll. Due to limits of the current production process, new manufacturing methods and construction solutions are needed. In cooperation with another thesis, the current design and manufacturing process was reviewed and a plan intended to improve the current solution was formulated. The plan was to, by working together in a project, perform a product development process intended to create concepts able to utilize new methods of manufacturing. By using established methods of concept generation, such as Brainwriting 6-3-5, 11 concepts were created. Some of these concepts involved a redesign of the press shoe, leading to a need for construction and performance analysis. With the other thesis focusing on researching new possible and available manufacturing solutions. The work of this thesis fully committed to the structural and mechanical performance evaluation of the new concepts. This was performed by creating a model of the technical application using Finite Element Modelling in ABAQUS. The model included a hyperelastic material model for the polyurethane material as well as cohesive zone modelling to account for partitioning of the part. The model was then used to simulate the different concepts as they were subjected to a challenging load case. The results of which were used as the basis for structural and performance analysis. The analysis showed proof of sufficient structural stability and mechanical performance for all evaluated concepts. Then, in cooperation with the other thesis, a final concept choice was made. All in all, three different redesigned concepts were deemed as having potential for further development. The current solution was also deemed as having potential for future development but only when new manufacturing methods or techniques were considered.
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Forsgren, Erik, and Isak Berneheim. "Behavior of Swedish Concrete Buttress Dams at Sesmic Loading." Thesis, KTH, Betongbyggnad, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-189237.
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The aim of the thesis is to study the response of Swedish buttress dams if they are subjected to an earthquake of relevant magnitude to Sweden. Swedish dams are evaluated for an extensive amount of load cases, but not for earthquake loading. Therefore, it is not known how the Swedish buttress dams would respond during such loading. Earthquake engineering is practised only to a marginal extent in Sweden due to a low risk of major earthquakes. In fact, an earthquake hazard zonation map that provides data for earthquake resistant design, does not even exist for Sweden. Therefore, part of the thesis is aimed at acquiring data from alternative sources to enable seismic evaluation. The effect of earthquakes on Swedish buttress dams are analysed through case studies. The case studies are performed with numerical analysis using the commercial finite element program Brigade Plus. The case studies are performed on two buttress dam models that were selected based on an inventory of Swedish buttress dams. In the case studies, the dam models are evaluated for the Safety Evaluation Earthquake (SEE), which correspond to 10 000 years return period. At the SEE event, the Peak Ground Acceleration (PGA), is also related to the geographical location of a dam. The envelope of available PGA in Sweden was used in the case studies to cover the spectrum of PGA. The response of the dams to the lowest value of PGA is insignificant and the dams are essentially unaffected. However, for the highest value of PGA the responses indicates that the concrete of the dams is severely cracked and that the ultimate capacity of the reinforcement may be exceeded. Hence, it is concluded that the geographical location of a Swedish dam is highly influential on the response to earthquake loading.<br>Syftet med denna uppsats är att analysera effekten på svenska betonglamelldammar i det fall de utsätts för en jordbävning av relevant magnitud för Sverige. Svenska dammar har blivit utvärderade för ett stort antal lastfall, dock ej för jordbävningslaster. Det är därför inte känt hur svenska betonglamelldammar uppträder under sådana laster. Jordbävningsdimensionering tillämpas endast marginellt i Sverige eftersom det föreligger låg risk för kraftfulla jordbävningar. Faktum är att en zonindelningskarta över jordbävningsrisk för byggnadsdimensionering inte ens existerar i Sverige. Därför dedikeras en del av uppsatsen till att hitta data från alternativa källor för seismisk utvärdering. Effekten av jordbävningar på svenska betonglamelldammar analyseras genom fallstudier. Dessa är genomförda baserat på numerisk analys med det kommersiella finita element programmet Brigade Plus. Analyserna är baserade på två utvalda betonglamelldammodeller som valdes genom en inventering av svenska betonglamelldammar. I fallstudien utvärderas dammarna för en Säkerhet Utvärderings Jordbävning (SUJ), denna motsvaras av 10 000 års återkomsttid. Vid en SUJ relateras den Maximala Mark Accelerationen (MAA) även till det geografiska läget av en damm. Ytterlighetsvärdena av tillgänglig MMA värden i Sverige användes i fallstudien för att täcka in hela spektrumet. Effekten av det lägsta MMA värdet på dammarna är obetydlig och dammarna kan anses i stort sett opåverkade. Det högsta värdet av MMA indikerar dock att dammarnas betong utsätts för stor uppsprickning och att kapaciteten av armeringen överskrids. Det kan därmed fastslås att det geografiska läget av en damm har stort inflytande över vilken effekt som kan förväntas vid en jordbävning
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Babu, Hareesh. "Finite-element analysis of an induction motor with inter-turn short-circuit faults." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-290082.
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Stator inter-turn short circuit (ITSC) faults are one of the common sources for induction machine failure affecting their reliable operation. In this thesis, a finite element (FE) model is developed to study the ITSC fault. The FE model is developed for a prototype induction machine that has the potential to emulate an ITSC fault in the stator. With the developed FE model of the prototype machine, a simulation study is performed to understand the behaviour of various electrical and magnetic quantities in time- and frequency-domain. The investigated quantities are potentially good signatures of the stator winding faults and they are therefore suitable to use in a condition monitoring system. The prototype machine with ITSC faults has been tested in an experimental setup and the results are compared to the simulation and also to analytical results. For the fault current it was found a good agreement between analytical results, FE simulations and experimental results. Moreover, the FE simulation results of the negative-sequence stator current amplitude present a minor mismatch with the analytical and experimental results. The reason for this mismatch is due to an inaccurate knowledge of the prototype machine geometrical parameters.<br>Kortslutning mellan varven i en asynkronmotors statorlindning (ITSC) är en av de vanligaste källorna för fel som påverkar dess drifttillförlitlighet. I detta examensarbete utvecklas en finit-element (FE) modell för att studera ITSC- fel. FE-modellen är utvecklad för en asynkronmotorprototyp som kan emulera ITSC-fel. Med den utvecklade modellen utförs en simuleringsstudie för att förstå beteendet hos olika elektriska och magnetiska egenskaper både i tids- och frekvensdomän. Dessa egenskaper är goda indikatorer av statorlindningsfel och kan därför med fördel användas i ett tillståndsövervakningssystem. Prototypmaskinen har testats experimentellt och de erhållna resultaten jämförs med FE-simuleringen och analysresultaten. Det analytiska resultatet, FEM- simuleringarna och den experimentella utvärderingen uppvisade god överrensstämmelse vad gäller felströmmen. Dock finns det en mindre avvikelse när det gäller amplituden hos statorströmmens negativa fasföljd. Orsaken till denna avvikelse är att prototypmaskinens geometri inte är helt känd.
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Rundgren, Anders, and Fredrik Wörmke. "Optimisation of the Ektorp sofa frame through the use of Finite element analysis." Thesis, Mälardalens högskola, Akademin för innovation, design och teknik, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-12466.
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The interest in using finite element analysis (FEA) as a product development tool is present within IKEAof Sweden (IoS). To gain additional support from within IoS a project was issued to identify the meritsand demerits of FEA. This was done by applying FEA to optimise an existing product, namely theEktorp sofa frame. Three important questions are addressed in this report: • How can the finite element method efficiently and reliably be applied to improve an existingproduct? • What types of improvements can be anticipated from using the finite element method andhow can these be achieved? • What products are suitable to be developed with the use of FEA? As the sofa frame mainly consists of wood a literature study is conducted to answer several questionsregarding the use of wood in conjunction with FEA. Real life tests are performed to verify acquiredmaterial data. The original design is analysed with FEA to act as reference for newer concepts and also to identifyareas of improvement. Additional design tools are also applied to complement the FEA. Concepts are generated to improve a number of factors such as weight, number of components andcost. These concepts are analysed with FEA to be compared to the original design and incrementallychanged until meeting set requirements. A final concept where the cost, weight and number of components are reduced is thoroughlydescribed and presented as a CAD model. The final result is the Ektorp sofa frame with its weightreduced by 10.9%, number of components reduced by 18.2% and material cost reduced by 13.4%. The conclusion from this process is that FEA can efficiently and reliably be applied to improve anexisting product. This, however, requires thorough knowledge in FEA. Strength, weight and cost arethe most obvious factors that can benefit from the use of FEA while almost all design changes canbenefit indirectly as well. Almost any product can benefit from the use of FEA; however, severalfactors decide the efficiency and reliability of these analyses, such as analysis experience and productcomplexity.<br>Det finns ett intresse för att använda finita element analyser (FEA) som ett produktutvecklingsverktygpå IKEA of Sweden (IoS). För att få ett ökat stöd inom IoS skapades ett projekt där för och nackdelarnamed FEA kan identifieras. Detta projekt baserades på att optimera en existerande produkt, nämligenEktorp soffans ram. Tre viktiga frågor behandlas i och med detta projekt: • Hur kan finita element metoden appliceras på ett effektivt och tillförlitligt sätt för att optimeraen existerande produkt? • Vilka typer av förbättringar kan man förvänta sig genom att använda finita element metodenoch hur uppnås dessa? • Vilka produkter lämpar sig att utvecklas med hjälp av FEA? Eftersom soffans ram till större delen består av trä inleds en litteraturstudie för att besvara frågor somberör användandet av trä i samband med FEA. Verkliga tester utförs för att verifiera insamladematerialdata. Originalkonstruktionen analyseras med FEA för att skapa en referens till kommande koncept och ävenför att identifiera möjliga förbättringsområden. Flera designverktyg används för att komplettera FEA. Koncept genereras för att förbättra en rad faktorer såsom vikten, antalet komponenter och kostnaden.Dessa koncept analyseras med FEA och jämförs mot originalkonstruktionen för att förbättrasinkrementellt tills det att fastställda krav uppfylls. Ett slutgiltigt koncept där kostnad, vikt och antalet komponenter är minskat beskrivs i detalj ochpresenteras som en CAD modell. Det slutgiltiga resultatet är Ektorp-soffans ram där vikten ärreducerad med 10,9%, antalet komponenter reducerade med 18,2% och materialkostnadernareducerade med 13,4%. Slutsatsen från projektet är att FEA kan appliceras på ett effektivt och tillförlitligt sätt för att förbättraen existerande produkt. Detta kräver dock omfattande kunskap inom FEA. Hållfasthet, vikt ochkostnad är de mest uppenbara parametrar som kan tjäna på användandet av FEA medan nästan allakonstruktionsändringar kan dra nytta av FEA indirekt. Nästan alla produkter kan dra nytta av FEA, detfinns dock en rad faktorer som avgör hur pass effektiva och tillförlitliga analyserna blir. Exempel pådessa är användarerfarenhet och produktkomplexitet.
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Mohammed, Amina. "Semi-Quantitative Assessment Framework for Corrosion Damaged Slab-on-Girder Bridge Columns Using Simplified Nonlinear Finite Element Analysis." Thèse, Université d'Ottawa / University of Ottawa, 2014. http://hdl.handle.net/10393/31020.
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Most of existing North American bridge infrastructure is reported to be deficient. Present infrastructure management mainly relies on qualitative evaluation, where bridge safety and serviceability are judged through routine visual inspection. With the successive increase in the number of severely deficient bridges and the limited available resources, it is crucial to develop a performance-based quantitative assessment evaluation approach that enables an accurate estimation of aging bridges ultimate and seismic capacities and ensures their serviceability. Reinforcement corrosion is the main cause of most of North American concrete infrastructure deterioration. Experimental investigations prove that reinforcement corrosion results in reduction of the steel reinforcement cross sectional area, localized (or global in very extreme cases) loss of bond action, concrete spalling, loss of core concrete confinement, and structural collapse. Field observations show that damage due to reinforcement corrosion in reinforced concrete (RC) bridge columns is localized in highly affected zones by splash of deicing water.
In this thesis, an innovative performance-based semi-quantitative assessment framework is developed using newly developed simplified nonlinear static and dynamic finite element analysis approaches. The framework integrates the bridge’s available design and after-construction information with enhanced inspection and additional material testing as sources for accurate input data. In order to evaluate the structural performance and the capacity of the corrosion-damaged bridge columns, four nonlinear static and dynamic analysis approaches have been developed: (i) simplified nonlinear sectional analysis (NLSA) approach that presents the basis of the analysis approaches to estimate the ultimate and seismic capacities, and serviceability of bridge columns; (ii) simplified nonlinear finite element analysis (NLFEA) approach, which enables estimating the ultimate structural capacity of corrosion-damaged RC columns; (iii) simplified hybrid linear/nonlinear dynamic finite element analysis (SHDFEA) approach to evaluate the serviceability of the bridge; and, (iv) simplified non-linear seismic analysis (SNLSA) approach to evaluate the seismic capacity of the bridge columns. The four analysis approaches are verified by comprehensive comparisons with available test experimental and analytical results. The proposed semi-quantitative assessment framework suggests three thresholds for each performance measure of the evaluation limit states to be decided by the bridge management system team. Case studies are presented to show the integrity and the consistency of using the proposed assessment framework. The proposed assessment framework together with the analysis approaches provide bridge owners, practicing engineers, and management teams with simplified and accurate evaluation tools, which lead to reduce the maintenance/rehabilitation cost and provide better safety, and reduce the variation in the data collected using only traditional inspection methods.
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Kylén, Joakim. "2D-model of a portal frame railway bridge for dynamic analysis." Thesis, KTH, Bro- och stålbyggnad, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-37025.
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Svensen, Daniel. "Numerical analyses of concrete buttress dams to design dam monitoring." Thesis, KTH, Betongbyggnad, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-189250.
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Old concrete buttress dams are sensitive to cracking if exposed to large temperature variations. The cracks can make dams sensitive to failure, depending on the size and location of the cracks. These problems can be overcome by lowering the temperature variations and stabilizing the dams. Insulation walls can be built to lower the temperature variations, and the area inside the insulation wall can be climate controlled to ensure a constant temperature. Stabilizing measures could be installing tendons, anchoring monoliths to the foundation or to keep parts of the monolith together. However, the best way to make sure the dam is functioning as expected is to monitor the behavior of the dam through different sensors. The sensors should be connected to some kind of dam monitoring software, which can indicate whether the dam is going to fail in a near future. For this to work, some kind of alert and alarm values has to be determined. The main purpose for this project is to develop a finite element model that could be used to simulate the real behavior of a concrete buttress dam and predict the future behavior of the dam. This makes it possible to determine alert and alarm values for monitoring equipment installed on the dam. Some steps are necessary to be able to create a finite element model representing the real behavior and to predict the future behavior of a dam. A first step is calibration of the model against real measurements, and during the calibration process it is important to evaluate the predictions made. A second step is to determine the normal variation in the behavior of the dam. A last step is to define suitable alert and alarm values, where the alert values are based on the normal variation of the dam and the alarm values are based on failure analyses. The results show that it is possible to calibrate a finite element model with sufficient accuracy in order for it to be used for predictions of the dams behavior. The results show two failure modes of the concrete buttress dam which deviate from previous research, where post-tensioned tendons were not included. From the results, information is given about where to place sensors to be able to capture a failure, how well the finite element model is calibrated, and what the alarm values should be. Furthermore, the results show that the evaluation of predictions made in the calibration process is of utmost importance to achieve a model representing the real behavior.<br>Gamla betonglamelldammar är känsliga för sprickbildning om de utsätts för stora temperaturvariationer. Sprickor kan göra dammarna känsliga för brott, beroende på storlek och placering av sprickorna. Dessa problem kan övervinnas genom att sänka temperaturvariationerna och stabilisera dammarna. Isoleringsväggar kan byggas för att sänka temperaturvariationerna, och området innanför isoleringsväggen kan klimatkontrolleras för att säkerställa en konstant temperatur. Stabiliserande åtgärder skulle kunna vara att installera spännkablar, förankring av monoliten till berggrunden eller att hålla ihop delar av monoliten. Emellertid är det bästa sättet att se till dammen fungerar som förväntat för att övervaka beteendet hos dammen genom olika sensorer. Givarna borde anslutas till någon form av programvara för dammövervakning, som kan indikera om dammen kommer att gå till brott inom en snar framtid. För att detta ska fungera måste någon form av mjuka och hårda larmvärden bestämmas. Huvudsyftet för detta projekt är att skapa en finit elementmodell som kan användas för att simulera det verkliga beteendet hos en betonglamelldamm och förutsäga framtida beteende av dammen för att kunna bestämma mjuka och hårda larmvärden för vald övervakningutrustning på dammen. Några steg är nödvändiga för att kunna skapa en finit elementmodell som representerar det verkliga beteendet och göra det möjligt att förutsäga det framtida beteendet av en damm. Ett första steg är kalibrering av modellen mot riktiga mätningar och under kalibreringsprocessen är det viktigt att utvärdera predikterade värden. Ett andra steg är att bestämma den normala variationen av dammens beteende. Ett sista steg är att definiera lämpliga värden för mjuka och hårda larmvärden, där de mjuka värdena baseras på dammens normala variation och de hårda larmvärdena på brottsanalyser. Resultaten visar att det är möjligt att kalibrera en finit elementmodell med tillräckligt god noggrannhet att den kan användas för prediktering av dammens beteende. Resultaten visar två brottmoder av betonglamelldammen som skiljer sig från tidigare studier där spännkablar inte hade inkluderats. Från resultaten ges information om var sensorer ska placeras för att kunna fånga ett brott, hur väl finita elementmodellen kalibrerats, och vilka de mjuka och hårda larmvärdena bör vara. Dessutom visar resultaten att utvärderingen av predikteringar som gjorts i kalibreringsprocessen är av yttersta vikt för att uppnå en modell som representerar det verkliga beteendet.
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Ben, Dahmane Nadia. "Etude du cloquage de films minces élastoplastiques sur substrat rigide." Thesis, Université Grenoble Alpes (ComUE), 2018. http://www.theses.fr/2018GREAI013/document.
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Les revêtements de couches minces soumis à de fortes contraintes de compression peuvent subir un phénomène de flambage et de délaminage simultané appelé « cloquage ». Le mécanisme de formation et de propagation des cloques en forme de rides droites et des cloques circulaires a largement été étudié dans la littérature en considérant un comportement élastique linéaire pour le film. Cependant, l’effet de la plasticité sur la propagation et l’équilibre de telles cloques, bien que constaté expérimentalement, n’avait pas encore été vraiment étudié à ce jour.Dans ce travail nous nous intéressons tout d’abord à l’observation et à la caractérisation des structures de flambement observées sur des film d’or déposés sur des substrats en silicium. Des effets de la plasticité sur la morphologie ou la charge critique de flambage des structures cloquées sont mis en évidence de manière quantitative grâce à des techniques d'observation morphologique comme l'AFM, ainsi que des tests mécaniques par nano-indentation et des mesures de contrainte.Un modèle mécanique est développé, permettant de modéliser le film comme une plaque non-linéaire géométrique au comportement élasto-plastique en contact unilatéral sur un support rigide représentant le substrat. De plus, un modèle de zone cohésive est introduit entre la plaque et le support de manière à prendre en compte le délaminage du film, avec un travail de séparation dépendant de la mixité modale du chargement.Ce modèle nous a permis de mettre en évidence l’effet de la plasticité sur les profils d’équilibres résultant du cloquage élasto-plastique, pour des morphologies de cloques en ride droite et de cloque circulaire. L'effet sur le décalage de la charge critique de flambage a également été étudié. Enfin, l'influence de la déformation plastique sur le mécanisme de propagation de la rupture interfacial lui même a été étudiée. En particulier, un effet de stabilisation de la forme de cloque circulaire, qui avait été observé expérimentalement dans diverses études, a pu être démontré par le calcul<br>Thin film coatings submitted to high compressive stresses may experience a simultaneous buckling and delamination phenomenon called "blistering". The mechanism of formation and propagation of blisters in the form of straight wrinkles and circular blisters has been extensively studied in the literature considering a linear elastic behavior for the film. However, the effect of plasticity on the propagation and mechanical equilibrium of such blisters, although experimentally observed, had not been systematically studied to date.In this work, we are interested in the observation and characterization of buckling structures observed on gold films deposited on silicon substrates. The effects of plasticity on the morphology or critical buckling load of buckled structures are quantitatively demonstrated using small scale surface observation techniques such as AFM, as well as mechanical testing by nanoindentation tests and stress measurement methods.A mechanical model is developed in order to model the film as a geometric nonlinear plate with elastic-plastic behavior in unilateral contact with a rigid support representing the substrate. In addition, a cohesive zone model is introduced between the plate and the support in order to take into account the delamination of the film, with a separation work depending on the mode mix of the interface loading.This model allowed us to highlight the effect of plasticity on the equilibrium profiles resulting from elastic-plastic blistering, for both straight and circular blisters morphologies. The effect on the offset of the critical buckling load has also been studied. Finally, the influence of plastic deformation on the propagation mechanism of the interfacial fracture itself has been studied. In particular, a stabilizing effect of the circular blister form, which has been observed experimentally in various studies, has been demonstrated through calculation
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Bolmsvik, Åsa. "Structural-acoustic vibrations in wooden assemblies: : Experimental modal analysis and finite element modelling." Doctoral thesis, Linnéuniversitetet, Institutionen för bygg- och energiteknik (BE), 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-24562.
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This doctoral thesis concerns flanking transmission in light weight, wooden multi-storey buildings within the low frequency, primarily 20-120 Hz. The overall aim is to investigate how the finite element method can contribute in the design phase to evaluate different junctions regarding flanking transmission. Two field measurements of accelerations in light weight wooden buildings have been evaluated. In these, two sources; a stepping machine, and an electrodynamic shaker, were used. The shaker was shown to give more detailed information. However, since a light weight structure in field exhibit energy losses to surrounding building parts, reliable damping estimates were difficult to obtain. In addition, two laboratory measurements were made. These were evaluated using experimental modal analysis, giving the eigenmodes and the damping of the structures. The damping for these particular structures varies significantly with frequency, especially when an elastomer is used in the floor-wall junction. The overall damping is also higher when elastomers are used in the floor-wall junction in comparison to a screwed junction. By analysing the eigenmodes, using the modal assurance criterion, of the same structure with two types of junctions it was concluded that the modes become significantly different. Thereby the overall behavior differs. Several finite element models representing both the field and laboratory test setups have been made. The junctions between the building blocks in the models have been modeled using tie or springs and dashpots. Visual observation and the modal assurance criterion show that there is more rotational stiffness in the test structures than in the models. The findings in this doctoral thesis add understanding to how modern joints in wooden constructions can be represented by FE modelling. They will contribute in developing FE models that can be used to see the acoustic effects prior to building an entire house. However, further research is still needed.<br>Denna doktorsavhandling behandlar flanktransmission i flervåningshus med trästomme, inom det lågfrekventa området, främst 20-120 Hz. Det övergripande målet är att undersöka hur finita elementmetoden kan bidra i konstruktionsfasen för att utvärdera olika knutpunkters inverkan på flanktransmissionen. Två fältmätningar av accelerationer i trähus har utvärderats. I dessa har två olika lastkällor använts, i den första en stegljudsapparat och i den andra en elektrodynamisk vibrator (shaker). Det visades att shakern kan ge mer detaljerad information, men eftersom vibrationerna även sprider sig till omgivande byggnadsdelar vid fältmätningarna var det svårt att estimera tillförlitliga dämpningsdata även då shaker användes. Fältmätningarna följdes av två mätningar i laborationsmiljö. Dessa två experiment utvärderades med experimentell modalanalys, vilket ger egenmoder och dämpning hos strukturerna. Dämpningen för dessa trähuskonstruktioner varierar kraftigt med frekvens. Extra stora variationer registreras då en elastomer användes i knutpunkten mellan golv och vägg. Den totala dämpningen är generellt högre när elastomerer används i knutpunkten mellan golv och vägg i jämförelse med då knutpunkten är skruvad. Genom att analysera egenmoder och deras korrelationer (MAC), för samma trästruktur men med olika typer av knutpunkter, drogs slutsatsen att knutpunkten drastiskt förändrar strukturens dynamiska beteende. Flera finita elementmodeller av både fält- och laboratorieuppställningar har gjorts. I dessa har knutpunkterna mellan byggnadsdelar modellerats helt styvt eller med hjälp av fjädrar och dämpare. Visuella observationer av egenmoder och korrelationen dem emellan visar att det finns mer rotationsstyvhet i försöken än i finita elementmodellerna. Resultaten i denna doktorsavhandling har gett förståelse för hur knutpunkter i träkonstruktioner beter sig och kan simuleras med finit elementmodellering. Vidare kan resultaten bidra till utvecklingen av FE-modeller som kan användas för att kunna se de akustiska effekterna redan under konstruktionsstadiet. Dock behövs ytterligare forskning inom området.
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Enzell, Jonas, and Markus Tollsten. "Thermal cracking of a concrete arch dam due to seasonal temperature variations." Thesis, KTH, Betongbyggnad, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-209839.
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Concrete dams located in northern regions are exposed to large seasonal temperature variations. These seasonal temperature variations have resulted in cracking in thin concrete dams. Continuous monitoring and evaluation of existing dams are important to increase the knowledge about massive concrete structures and to ensure dam safety. The aim of this degree project is to increase the knowledge about how cracking occurs in concrete dams and how it affects the dam safety. This was achieved by simulating the development of cracks in a concrete arch dam exposed to seasonal temperature variations using finite element analysis (FEA). The accuracy of the model was evaluated by comparing the results with measurements from a Swedish concrete arch dam. Finally, effect of cracks and temperature on the dam safety was investigated. FEA was used to predict the crack pattern and displacements in the arch dam. The analyses were performed both with linear elastic and nonlinear material behavior. Two models were analyzed, in one model the dam was considered to be a homogeneous arch, the other model included contraction joints. The cracking was simulated using temperature envelopes from the location of the Swedish arch dam. To evaluate the displacements in the arch, further analyses were carried out, where the cracked arch dam was exposed to the actual temperature variations at the location. The results were compared to the crack pattern and measurements of displacements of the Swedish arch dam. To investigate the effects from the cracking on the safety of the dam, a progressive failure analyses performed. The results show that the downstream face of the arch cracked under hydrostatic pressure. The cracks propagated further during winter when the temperature load was applied. The resulting crack pattern corresponded well with the survey of the cracks from the Swedish arch dam. The FE-models with nonlinear material developed a horizontal plastic hinge due to excessive cracking in a region halfway down from the crest. The plastic hinge affected the shape of the deflected arch. The magnitude of the displacements and the shape of the deflected arch was captured with the nonlinear models. A safety factor of 3 for internal structural failure in the arch was found in the failure analyses. The safety factor of the arch only decreased slightly due to the cracking. During a cold winter, the safety factor decreased to 2.5.<br>Betongdammar belägna i nordliga klimat blir utsatta för stora säsongsburna temperaturvariationer. Dessa temperaturvariationer har orsakat sprickbildning i tunna betongdammar. Kontinuerlig övervakning och utvärdering av befintliga dammar är viktigt för att öka kunskapen om massiva betongkonstruktioner och för att säkerställa dammsäkerheten. Syftet med det här examensarbetet är att öka kunskapen om hur sprickor uppstår i valvdammar samt hur de påverkar anläggningens säkerhet. Målet är att med finit elementanalys (FEA) analysera uppsprickningen av betongen i en valvdamm som påverkas av säsongsburna temperaturvariationer. Tillförlitligheten i modellen utvärderas genom att jämföra med mätningar från en svensk valvdamm av liknande dimensioner. Slutligen utvärderas hur dammens säkerhet påverkas av sprickbildningen. FE-analys användes för att förutsäga sprickmönstret och förskjutningarna i valvdammen. Analyserna utfördes både med linjärelastiskt och icke-linjärt materialbeteende. Två modeller användes i analysen, i ena modellen betraktades dammen som homogen och i den andra inkluderades gjutfogar. Sprickmönstret simulerades med temperaturcykler baserade på extremtemperaturer tagna intill den svenska valvdammen. För att utvärdera förskjutningarna i dammen gjordes vidare analyser där den spruckna dammen utsattes för temperaturvariationer uppmätta från samma plasts. Resultaten från analysen jämfördes med mätningar av förskjutningar och kartering av sprickor från den svenska valvdammen. För att undersöka hur säkerheten påverkades av sprickbildningen utfördes progressiv brottanalys. Resultaten visar att dammen spricker på nedströmssidan när den utsätts för vattentryck. Sprickorna fortplantas under vintern när temperaturlasten appliceras. Sprickmönstret stämmer överens med kartering av den verkliga dammen. FE-modellerna med icke-linjärt materialbeteende utvecklade en plastisk led längs horisontella sprickor halvvägs ner från krönet. Den plastiska leden påverkade dammens utböjda form. Förskjutningarna och dammens utböjda form i de ickelinjära modellerna stämmer väl överens med de uppmätta förskjutningarna. Vid brottanalysen var säkerhetsfaktorn mot materialbrott i dammen 3. Säkerhetsfaktorn minskade något till följd av sprickorna. Under en kall vinter sjönk säkerhetsfaktorn till 2,5.
Books on the topic "Finit Element Analysis"
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S, Malkus David, and Plesha Michael E, eds. Concepts and applications of finite element analysis. 3rd ed. Wiley, 1989.
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Stasa, Frank L. Applied finite element analysis forengineers. Harcourt Brace Jovanovich, 1985.
Find full textBook chapters on the topic "Finit Element Analysis"
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Rieg, Frank, Reinhard Hackenschmidt, and Bettina Alber-Laukant. "Finite Elements and Element Matrices." In Finite Element Analysis for Engineers. Carl Hanser Verlag GmbH & Co. KG, 2014. http://dx.doi.org/10.3139/9781569904886.004.
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Gayed, Ramez, and Amin Ghali. "Finite-element analysis." In Structural Analysis Fundamentals. CRC Press, 2021. http://dx.doi.org/10.1201/9780429286858-13.
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Thompson, Mary Kathryn, and John M. Thompson. "Elements and Element Input." In ANSYS Mechanical APDL for Finite Element Analysis. Elsevier, 2017. http://dx.doi.org/10.1016/b978-0-12-812981-4.00004-6.
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"10 Finite element analyses (FEA)Finite Element Analysis." In Dynamic Reconstruction of the Spine, edited by Daniel H. Kim, Dilip K. Sengupta, Frank P. Cammisa, Do Heum Yoon, and Richard G. Fessler. Georg Thieme Verlag, 2015. http://dx.doi.org/10.1055/b-0035-108522.
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"Finite-element formulations for symmetric elements." In Vibration Analysis and Structural Dynamics for Civil Engineers. CRC Press, 2018. http://dx.doi.org/10.1201/9781315275031-17.
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"Element Analysis." In The Finite Element Method. John Wiley & Sons Singapore Pte. Ltd, 2018. http://dx.doi.org/10.1002/9781119107323.ch3.
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Ghali, A., A. M. Neville, and T. G. Brown. "Finite-element method." In Structural Analysis. CRC Press, 2017. http://dx.doi.org/10.1201/9781315273006-16.
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"Finite-element method." In Structural Analysis. CRC Press, 2003. http://dx.doi.org/10.1201/9781482284669-17.
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"FIGURE 9.1 Rod element. FIGURE 9.2 Beam element." In Finite Element Analysis. CRC Press, 2003. http://dx.doi.org/10.1201/9780203009512-24.
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"Monographs and Texts." In Finite Element Analysis. CRC Press, 2003. http://dx.doi.org/10.1201/9780203009512.bmatt.
Full textConference papers on the topic "Finit Element Analysis"
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Hjiej, Siham, Nikolay Osipov, Adrien Lebrun, Clement Soret, and Yazid Madi. "Evaluation of the Fatigue Crack Growth Behavior by Experiments and Numerical Simulations on Full-Size Pipeline Steels." In 2018 12th International Pipeline Conference. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/ipc2018-78495.
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The safety of gas transportation pipelines under fatigue loading remains an important issue. The purpose of the present study is to better evaluate the fatigue crack growth (FCG) behavior by carrying out analysis/predictions and experiments in full-size pipeline steels. A full characterization was made using several samples of an X42 grade pipeline steel, to characterize the monotonic and the fatigue behavior. Fatigue tests on full-scale pipeline steels under pressure loading were performed. The potential drop (PD) method applied to pressurized pipes makes it possible to monitor and quantify both crack initiation and crack propagation. These tests served as a basis for numerical comparison. Crack propagation of the full-size pipeline steel was simulated by finit element analysis (FEA) using an adaptive re-meshing approach implemented as part of the Z-set/Zebulon software. Simulation allows predicting fatigue crack growth life on pipes using results of tests on specimens as an input.
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Kuropka, Karolina. "Risk Analysis ss s Fundamental Element of the Capital Group’S Transfer Pricing Policy." In FINIZ 2020. Singidunum University, 2020. http://dx.doi.org/10.15308/finiz-2020-46-52.
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Zhelyazov, Todor. "Finite Element Modelling of FRP – Strengthened Structural Elements." In IABSE Symposium, Guimarães 2019: Towards a Resilient Built Environment Risk and Asset Management. International Association for Bridge and Structural Engineering (IABSE), 2019. http://dx.doi.org/10.2749/guimaraes.2019.0752.
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<p>Numerical aspects of the analysis of structural elements strengthened with FRP reinforcement are discussed in this contribution. Constitutive laws are defined on the meso – scale for the materials involved (steel, concrete, FRP).</p><p>The evolutions of experimentally observable parameters of FRP-strengthened concrete elements loaded in flexure are obtained by finite element analysis. Numerical results are compared to experimental data.</p><p>The employed numerical strategy consists in defining a damage-based constitutive law for concrete. A beneficial outcome of the implementation of such constitutive relation is the possibility to monitor the damage evolution for a given period of exploitation. Since the remaining structural life can be assessed in this way, monitoring of damage accumulation appears as a prerequisite for an accurate and efficient design of the reinforcement.</p>
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Salami, M. Reza, and Farshad Amini. "Numerical Model for the Implementation of Discontinuous Deformation Analysis in Finite Element Mesh." In Third International Conference on Discrete Element Methods. American Society of Civil Engineers, 2002. http://dx.doi.org/10.1061/40647(259)27.
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Garcia, Gabriela, Leonardo Traversoni, Theodore E. Simos, George Psihoyios, and Ch Tsitouras. "Finite Element Solution of Vortex Transport Equation." In Numerical Analysis and Applied Mathematics. AIP, 2007. http://dx.doi.org/10.1063/1.2790259.
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Bjorkman, Gordon S., and Jason M. Piotter. "Finite Element Mesh Considerations for Reduced Integration Elements." In ASME 2008 Pressure Vessels and Piping Conference. ASMEDC, 2008. http://dx.doi.org/10.1115/pvp2008-61135.
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Finite element models of spent fuel casks and canisters that are typically used in impact and impulse analyses may contain tens of thousands of nonlinear elements. These models use explicit time integration methods with small time steps. To achieve reasonable run times, fully integrated elements are replaced with under-integrated elements that use reduced integration procedures. When fully integrated these elements produce a linear strain distribution. Reduced integration, however, results in a constant strain distribution, which requires more elements through the thickness of the canister shell to achieve the same accuracy as fully integrated elements. This paper studies the effect of the number of reduced integration elements through the thickness of the canister shell and the ratio of element height to shell thickness on the accuracy of the strains in regions of high through-thickness bending, such as the junction between the shell and base plate. It is concluded that mesh refinement has a significant effect on the maximum plastic strain response in such regions and that a converged solution may not be attainable within practical limits of mesh refinement, if the results are based solely on the maximum plastic strain on a cross section at a structural discontinuity. The objective is not to chase the stress concentration with ever finer meshes, but rather the objective is to establish a mesh density within the discontinuity region that results in the stresses and strains that are associated with the bending moment that restores compatibility at the structural discontinuity. In this case a converged solution is obtained by investigating the response of other elements on the same cross section that are not located on the surface of the stress concentration at the structural discontinuity. Based on the results, a “rule of thumb” is proposed for mesh refinement in a region of severe structural discontinuity wherein reasonably proportioned reduced integration solid elements are used and plastic strains are evaluated.
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Geremias Toni, Fernando, and Clóvis de Arruda Martins. "Parallelized Element-by-Element Architecture for Structural Analysis of Flexible Pipes Using Macro Finite Elements." In ASME 2017 36th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/omae2017-61800.
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Flexible pipes are employed to transport oil and natural gas from the seabed to the floating units, and vice versa. These pipes are made of concentric layers of different geometries, materials and structural functions in order to withstand a series of static and dynamic loads from its adverse operating environment. The local analysis is an important stage in the design of a flexible pipe and consists in determining the stresses and strains distributions along its layers. Multipurpose finite element packages, such as ANSYS and ABAQUS, are commonly used in this task, but present many limitations for their generic nature, varying from the absence of specific tools for model creation to heavy restrictions of the number of degrees-of-freedom to make computational processing feasible. Over the past years, several macro finite elements were formulated by PROVASI & MARTINS specifically for modeling a flexible pipe, allowing a reduction in the total number of degrees-of-freedom. However, until the present moment, there is no parallel processing software that efficiently implements these elements for large model applications. Aiming greater computational performance, the macro elements can be combined with the element-by-element (EBE) method, which is characterized by the global stiffness matrix elimination, is highly parallelizable, scalable and shows a memory consumption that grows linearly with the number of elements in the model. In this context, a parallelized architecture for structural analysis of flexible pipes that explores the EBE method and macro finite elements has been developed, being of great interest for design applications in the industry.
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GURUSWAMY, GURU. "Coupled finite-difference/finite-element approach for wing-body aeroelasticity." In 4th Symposium on Multidisciplinary Analysis and Optimization. American Institute of Aeronautics and Astronautics, 1992. http://dx.doi.org/10.2514/6.1992-4680.
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Khalaji, Iman, Kaamran Rahemifar, and Abbas Samani. "Statistical finite element analysis." In 2008 30th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE, 2008. http://dx.doi.org/10.1109/iembs.2008.4650478.
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Durand, R., and M. M. Farias. "NONLINEAR JOINT ELEMENT FOR THE ANALYSIS OF REINFORCEMENT BARS USING FINITE ELEMENTS." In 10th World Congress on Computational Mechanics. Editora Edgard Blücher, 2014. http://dx.doi.org/10.5151/meceng-wccm2012-19278.
Full textReports on the topic "Finit Element Analysis"
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Blanco, Alejandro G. Towards Intelligent Finite Element Analysis. Defense Technical Information Center, 1990. http://dx.doi.org/10.21236/ada228672.
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Peterson, Jerrod P. Diffusion of Designerly Finite Element Analysis. Office of Scientific and Technical Information (OSTI), 2015. http://dx.doi.org/10.2172/1504608.
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Hopkins, Matthew Morgan, Peter Randall Schunk, Thomas A. Baer, et al. Finite element analysis of multilayer coextrusion. Office of Scientific and Technical Information (OSTI), 2011. http://dx.doi.org/10.2172/1029813.
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Wands, R. Finite Element Analysis of IH Module. Office of Scientific and Technical Information (OSTI), 1986. http://dx.doi.org/10.2172/1030730.
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Rudland, D., and R. Luther. EC Vacuum Vessel Finite Element Analysis. Office of Scientific and Technical Information (OSTI), 1992. http://dx.doi.org/10.2172/1031155.
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Spencer, Nathan. Impeller deflection and modal finite element analysis. Office of Scientific and Technical Information (OSTI), 2013. http://dx.doi.org/10.2172/1096476.
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TEWKSBURY, D. A. VALIDATION OF ANSYS FINITE ELEMENT ANALYSIS SOFTWARE. Office of Scientific and Technical Information (OSTI), 2004. http://dx.doi.org/10.2172/828016.
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TEWKSBURY, D. A. VALIDATION OF ANSYS FINITE ELEMENT ANALYSIS SOFTWARE. Office of Scientific and Technical Information (OSTI), 2004. http://dx.doi.org/10.2172/825366.
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Wands, R. Finite Element Analysis of EC Insert Plug. Office of Scientific and Technical Information (OSTI), 1986. http://dx.doi.org/10.2172/1030006.
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HAMM, E. R. VALIDATION OF ANSYS FINITE ELEMENT ANALYSIS SOFTWARE. Office of Scientific and Technical Information (OSTI), 2003. http://dx.doi.org/10.2172/814762.
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