Log in

Relevant bibliographies by topics / Linear buckling analysis

Contents

Journal articles
Dissertations / Theses
Books
Book chapters
Conference papers

Academic literature on the topic 'Linear buckling analysis'

Author: Grafiati

Published: 4 June 2021

Last updated: 5 February 2022

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Linear buckling analysis.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "Linear buckling analysis"

1

SAOTHONG, Jariyaporn, Osamu KUWAZURU, and Nobuhiro YOSHIKAWA. "2109 Wrinkle Analysis of Human Skin Based on Linear Buckling Theory." Proceedings of The Computational Mechanics Conference 2005.18 (2005): 65–66. http://dx.doi.org/10.1299/jsmecmd.2005.18.65.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Kamiya, Fumio. "Buckling Theory of Sheathed Walls; Linear Analysis." Journal of Structural Engineering 113, no. 9 (September 1987): 2009–22. http://dx.doi.org/10.1061/(asce)0733-9445(1987)113:9(2009).

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Lv, Jian Bing, He Lin Fu, Yang Li, and Zhe Liu. "Partially Double-Layered Dome Structure Linear and Nonlinear Buckling Analysis." Advanced Materials Research 163-167 (December 2010): 387–91. http://dx.doi.org/10.4028/www.scientific.net/amr.163-167.387.

Full text

Abstract:

Space steel structure stability has been a focused problem in the engineering field, in the past the study mainly concentrated on the single layer dome structure stability and elastic stability analysis, but with the structure shape complex, new type structure emerges continually, it needs more accurate stability analysis method. In this paper the linear and nonlinear buckling theory and analysis method are introduced firstly, and then a new type steel space structure with partially double layer dome structure is chosen as the computational model. The structure self vibration mode, linear buckling analysis and nonlinear buckling process and buckling characteristics are studied by the FEM commercial code ANSYS; the nonlinear load-deflection curves at the different points are gotten and some conclusions about this kind of structure are drawn.

APA, Harvard, Vancouver, ISO, and other styles

4

Zhou, Chong Yang, Jian Rong Yang, Xiao Dong Yang, and Zheng Chong Lai. "Steel-Concrete Composite Box Beam Linear Buckling Analysis." Applied Mechanics and Materials 620 (August 2014): 433–37. http://dx.doi.org/10.4028/www.scientific.net/amm.620.433.

Full text

Abstract:

This article uses the finite element method for a particular steel - concrete composite box girder structures were linear buckling analysis and design optimization of web longitudinal stiffeners. By exploring the effects of longitudinal stiffeners geometry and bending stiffness of the composite box girder stability, drawn steel - concrete composite box girder factor of stability of this structure plays a key role. Meanwhile, the optimization of web stiffeners, stiffeners come to a reasonable arrangement for improving the overall stability of the structure, excellent performance play materials and construction economy plays an important role for the stability of the bridge structure similar to the design of future work provide a reference point.

APA, Harvard, Vancouver, ISO, and other styles

5

Wu, C. C., and J. S. Arora. "Design sensitivity analysis of non-linear buckling load." Computational Mechanics 3, no. 2 (1988): 129–40. http://dx.doi.org/10.1007/bf00317060.

Full text

APA, Harvard, Vancouver, ISO, and other styles

6

Vanli, O. A., and P. Michaleris. "Distortion Analysis of Welded Stiffeners." Journal of Ship Production 17, no. 04 (November 1, 2001): 226–40. http://dx.doi.org/10.5957/jsp.2001.17.4.226.

Full text

Abstract:

This paper presents a welding distortion analysis approach for T-stiffeners with a particular emphasis on welding-induced buckling instabilities. Two-dimensional thermomechanical welding process simulations are performed to determine the residual stress and angular distortion. This critical buckling stress along with the buckling mode and bowing distortion are computed in 3-D eigenvalue and linear stress analyses. The effects of the stiffener geometry, weld sequence, weld heat input and mechanical fixturing on the occurrence of buckling and the distortion pattern are investigated.

APA, Harvard, Vancouver, ISO, and other styles

7

Ma, Yong Bin, Tian Hu He, and Bing Dong Gu. "Thermal Buckling Analysis of Cyclic Symmetry Mounting Structure." Applied Mechanics and Materials 578-579 (July 2014): 598–601. http://dx.doi.org/10.4028/www.scientific.net/amm.578-579.598.

Full text

Abstract:

Buckling analysis is a technique used to determine buckling load and buckled mode shape. Buckling load is the critical load at which a structure becomes unstable while buckled mode shape is the characteristic shape associated with a structure's buckled response. In this paper, the elastic thermal buckling of a heated cyclic symmetry structure is carried out by means of finite element method. The buckling cyclic symmetry analysis is focused on a ring-strut-ring structure which is extensively used as a basic element in rotating machines. The linear eigenvalue buckling analysis is adopted to determine the buckling response with the temperature change of the structure.

APA, Harvard, Vancouver, ISO, and other styles

8

Cao, Qing, Yang Li, and Hao Zhang. "Nonlinear Buckling Analysis of Wind Turbine Towers." Advanced Materials Research 383-390 (November 2011): 6469–75. http://dx.doi.org/10.4028/www.scientific.net/amr.383-390.6469.

Full text

Abstract:

Wind turbine towers are belonging to towering cylinder shell structures, which are easy to appear buckling instability under wind or other complicated loads, and on which integral elastic-plastic buckling analyses have great theoretical and practical significances. This paper used large deflection nonlinear pre-buckling and Koiter initial post-buckling theories, and adopted the finite element scheme of updated integration algorithm and LDC nonlinear solution method, then analyzed the linear buckling, elastic-plastic static buckling, and post-buckling response of the towers with initial imperfections in different location and size. It has obtained that: 1) the critical load of towers with elastic-plastic buckling is much smaller than it with elastic buckling; 2) gravity has certain influence on the critical buckling load; 3) the critical buckling load is insensitive to initial imperfections, meanwhile the imperfections which located on the top or the bottom of the tower are inferior for the stability of tower.

APA, Harvard, Vancouver, ISO, and other styles

9

Jeon, Sang Youn, Kyu Tae Kim, and Young Shin Lee. "A Study on the Static Buckling Load Estimation of the Spacer Grid in the Pressurized Water Reactor Fuel Assembly." Key Engineering Materials 353-358 (September 2007): 2581–84. http://dx.doi.org/10.4028/www.scientific.net/kem.353-358.2581.

Full text

Abstract:

This study contains several estimation methods of the static buckling load for the spacer grid of nuclear fuel assembly in pressurized water reactor. Three different estimation methods were proposed for the calculation of the static buckling loads of spacer grid. The linear and non-linear static buckling analyses were performed to estimate the static buckling load of the spacer grids using ANSYS program. The analyses results were compared with the static buckling test results. Based on the analysis and test results, the applicability of the proposed estimation method for the static buckling load of the spacer grid was investigated.

APA, Harvard, Vancouver, ISO, and other styles

10

Jia, Yu Zhuo, and Yi Xuan Wang. "Large Span Double Truss Lateral Stability Analysis." Applied Mechanics and Materials 680 (October 2014): 171–74. http://dx.doi.org/10.4028/www.scientific.net/amm.680.171.

Full text

Abstract:

The effects of large-span truss geometry of the double-plane stable orthogonal design. The use of finite element analysis software Midas double space truss were linear buckling analysis and nonlinear buckling analysis, research process and through its buckling load - examine issues outside of the structure of the plane stable displacement curve. For double truss draw some outside reference plane stability study conclusions.

APA, Harvard, Vancouver, ISO, and other styles

More sources

Dissertations / Theses on the topic "Linear buckling analysis"

1

El-Adas, Kadmous Moufid. "Linear and nonlinear buckling analysis via ABAQUS." Master's thesis, This resource online, 1990. http://scholar.lib.vt.edu/theses/available/etd-01262010-020017/.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Hu, Bin. "Stability analysis of linear thin shells." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2014. http://amslaurea.unibo.it/7360/.

Full text

Abstract:

Shell structure is widely used in engineering area. The purpose of this dissertation is to show the behavior of a thin shell under external load, especially for long cylindrical shell under compressive load, I analyzed not only for linear elastic problem and also for buckling problem, and by using finite element analysis it shows that the imperfection of a cylinder could affect the critical load which means the buckling capability of this cylinder. For linear elastic problem, I compared the theoretical results with the results got from Straus7 and Abaqus, and the results are really close. For the buckling problem I did the same: compared the theoretical and Abaqus results, the error is less than 1%, but in reality, it’s not possible to reach the theoretical buckling capability due to the imperfection of the cylinder, so I put different imperfection for the cylinder in Abaqus, and found out that with the increasing of the percentage of imperfection, the buckling capability decreases, for example 10% imperfection could decrease 40% of the buckling capability, and the outcome meet the buckling behavior in reality.

APA, Harvard, Vancouver, ISO, and other styles

3

Arpaci, Erdogan. "Analysis Of Sinusoidal And Helical Buckling Of Drill String In Horizontal Wells Using Finite Element Method." Master's thesis, METU, 2009. http://etd.lib.metu.edu.tr/upload/2/12611003/index.pdf.

Full text

Abstract:

The number of horizontal wells is increasing rapidly in all over the world with the growth of new technological developments. During horizontal well drilling, much more complex problems occur when compared with vertical well drilling, such as decrease in load transfer to the bit, tubular failure, tubular fatigue and tubular lock-up. This makes selection of appropriate tubular and making the right drill string design more important. As the total compression load on the horizontal section increases, the behavior of the tubular changes from straight to sinusoidal buckling, and if the total compression load continues to increase the behavior of the tubular changes to helical buckling. Determination of critical buckling loads with finite element method (FEM) in horizontal wells is the main objective of this study. Initially, a computer program (ANSYS) that uses FEM is employed to simulate different tubular and well conditions. Four different pipe sizes, four different wellbore sizes and three different torque values are used to model the cases. Critical buckling load values corresponding to significant variables are collected from these simulated cases. The results are classified into different buckling modes according to the applied weight on bit values and the main properties of the simulated model, such as modulus of elasticity, moment of inertia of tubular cross section, weight per unit length of tubular and radial clearance between the wellbore and the tubular. Then, the boundary equations between the buckling modes are obtained. The equations developed in this thesis by simulating the cases for the specific tubular sizes are used to make a comparison between the critical buckling load values from the models in the literature and this work. It is observed that the results of this work fit with literature models as the tubular size increases. The influence of torque on critical buckling load values is investigated. It is observed that torque has a slight effect on critical buckling load values. Also the applicability of ANSYS for buckling problems was revealed by comparing the ANSYS results with the literature models&
#8217
results and the experimental study in the literature.

APA, Harvard, Vancouver, ISO, and other styles

4

Sherzad, Rafiullah, and Awrangzib Imamzada. "Buckling and Geometric Nonlinear Stress Analysis : Circular glulam arched structures." Thesis, Linnéuniversitetet, Institutionen för byggteknik (BY), 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-54569.

Full text

Abstract:

An arched structure provides an effective load carrying system for large span structures. When it comes to long span roof structures, timber arches are one of the best solutions from both structural and aesthetical point of view. Glulam arched structures are often designed using slender elements due to economic consideration. Such slender cross-section shape increases the risk of instability. Instability analysis of straight members such as beam and column are explicitly defined in Eurocode. However, for instability of curved members no analytical approach is provided in the code, thus some numerical method is required. Nonetheless, an approximation is frequently used to obtain the effective buckling length for the arched structures in the plane of arches. In this master thesis a linear buckling analysis is carried out in Abaqus to obtain an optimal effective buckling length both in-plane and out-of-plane for circular glulam arched structures. The elastic springs are used to simulate the overall stiffness of the bracing system. The results obtained by the FE simulations are compared with a simple approximation method. Besides, the forces acting on the bracings system is obtained based on 3D geometric nonlinear stress analysis of the timber trusses. Our findings conclude that the approximation method overestimates the effective buckling length for the circular glulam arched structures. In addition, the study indicates that the position of the lateral supports along the length of the arch is an important design aspect for buckling behaviour of the arched structures. Moreover, in order to acquire an effective structure lateral supports are needed both in extrados and intrados. Furthermore, instead of using elastic spring elements to simulate the overall stiffness of the bracing system, a full 3D simulation of two parallel arches was performed. It was shown that the springs are stronger than the real bracing system for the studied arch.

APA, Harvard, Vancouver, ISO, and other styles

5

Lam, Siu-Shu Eddie. "Linear and geometrically nonlinear analysis of shell structures by a shear flexible finite element shell formulation." Thesis, University of Southampton, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.328340.

Full text

APA, Harvard, Vancouver, ISO, and other styles

6

Kurniawan, Cyrilus Winatama. "Flexural behaviour and design of the new LiteSteel beams." Queensland University of Technology, 2007. http://eprints.qut.edu.au/16674/.

Full text

Abstract:

The flexural capacity of the new hollow flange steel section known as LiteSteel beam (LSB) is limited by lateral distortional buckling for intermediate spans, which is characterised by simultaneous lateral deflection, twist and web distortion. Recent research based on finite element analysis and testing has developed design rules for the member capacity of LiteSteel beams subject to this unique lateral distortional buckling. These design rules are limited to a uniform bending moment distribution. However, uniform bending moment conditions rarely exist in practice despite being considered as the worst case due to uniform yielding across the span. Loading position or load height is also known to have significant effects on the lateral buckling strength of beams. Therefore it is important to include the effects of these loading conditions in the assessment of LSB member capacities. Many steel design codes have adopted equivalent uniform moment distribution and load height factors for this purpose. But they were derived mostly based on data for conventional hot-rolled, doubly symmetric I-beams subject to lateral torsional buckling. In contrast LSBs are made of high strength steel and have a unique crosssection with specific residual stresses and geometrical imperfections along with a unique lateral distortional buckling mode. The moment distribution and load height effects for LSBs, and the suitability of the current steel design code methods to accommodate these effects for LSBs are not yet known. The research study presented in this thesis was therefore undertaken to investigate the effects of nonuniform moment distribution and load height on the lateral buckling strength of simply supported and cantilever LSBs. Finite element analyses of LSBs subject to lateral buckling formed the main component of this study. As the first step the original finite element model used to develop the current LSB design rules for uniform moment was improved to eliminate some of the modelling inaccuracies. The modified finite element model was validated using the elastic buckling analysis results from well established finite strip analysis programs. It was used to review the current LSB design curve for uniform moment distribution, based on which appropriate recommendations were made. The modified finite element model was further modified to simulate various loading and support configurations and used to investigate the effects of many commonly used moment distributions and load height for both simply supported and cantilever LSBs. The results were compared with the predictions based on the current steel code design rules. Based on these comparisons, appropriate recommendations were made on the suitability of the current steel code design methods. New design recommendations were made for LSBs subjected to non-uniform moment distributions and varying load positions. A number of LSB experiments was also undertaken to confirm the results of finite element analysis study. In summary the research reported in this thesis has developed an improved finite element model that can be used to investigate the buckling behaviour of LSBs for the purpose of developing design rules. It has increased the understanding and knowledge of simply supported and cantilever LSBs subject to non-uniform moment distributions and load height effects. Finally it has proposed suitable design rules for LSBs in the form of equations and factors within the current steel code design provisions. All of these advances have thus further enhanced the economical and safe design of LSBs.

APA, Harvard, Vancouver, ISO, and other styles

7

Craveiro, Marina Vendl. "Upheaval buckling of pipelines triggered by the internal pressure resulting from the transportation of oil and gas: theoretical discussions and geometrically nonlinear analysis using Finite Element Method." Universidade de São Paulo, 2017. http://www.teses.usp.br/teses/disponiveis/3/3144/tde-06122017-082632/.

Full text

Abstract:

The pipelines used to transport oil and gas from the wellheads to the distribution and refining sites can be subjected to high levels of pressure and temperature. Under such conditions, the pipelines tend to expand, but, if the expansion is inhibited, a significant compressive axial force can arise, leading to their buckling, which can occur in the horizontal or vertical plane. In this context, the objective of the present work is to analyze the upheaval buckling of pipelines, considering the internal pressure to which they are subjected during the transportation of oil and gas as its only triggering. Using the concept of effective axial force, it aims at discussing two different approaches for considering the internal pressure in buckling problems: distributed loads dependent on pipeline curvature and equivalent compressive axial forces with follower and non-follower characteristics. It also discusses the influence of using static or dynamic analysis for such approaches. Concerning the upheaval buckling itself, the work intends to analyze and compare the influence of the soil imperfection amplitudes to the influence of the friction between the pipeline and the ground in the critical loads and in the post-buckling configurations of the pipeline. Besides theoretical research, the objectives are achieved through the development of various numerical models, since geometrically-simple models, without the consideration of the interaction between the pipeline and the ground, until more complex models, with the use of contact models to detect the ground and its imperfections. The models are developed in Giraffe (Generic Interface Readily Accessible for Finite Elements) using geometrically-exact finite element models of beams, undergoing large displacements and finite rotations. Through the research, it is concluded that there is an equivalence between the application of the internal pressure as a distributed load dependent on pipeline curvature and the application of the internal pressure as a follower compressive axial force. Besides this, it is demonstrated that the type of the analysis (static or dynamic) depends on the nature of the physical system analyzed. With the aid of results presented in terms of internal pressure, classical results about the influence of the imperfection amplitudes and of the friction between the pipeline and the ground in buckling are confirmed. It is also showed that the imperfection amplitudes analyzed play a more important role in the post-buckling configurations of the pipeline than the friction.
Os dutos utilizados para transportar petróleo e gás natural das reservas até os locais de distribuição e refino podem estar submetidos a elevados níveis de pressão e temperatura. Sob tais condições, os dutos tendem a se expandir, porém, se a expansão é inibida, uma força axial de compressão significativa pode surgir nos dutos, ocasionando a flambagem lateral ou vertical dos mesmos. Dentro desse contexto, o objetivo do presente trabalho é analisar a flambagem vertical de dutos, considerando a pressão interna à qual eles estão submetidos durante o transporte de petróleo e gás natural como o único parâmetro desencadeador da flambagem. Usando o conceito de força axial efetiva, o trabalho objetiva discutir duas abordagens diferentes para considerar a pressão interna nos problemas de flambagem: carregamentos distribuídos dependentes da curvatura do duto e forças axiais de compressão equivalentes à pressão com caráter seguidor e não seguidor. O trabalho também discute a influência de usar a análise estática ou dinâmica para analisar essas abordagens de carregamento. Com relação à flambagem vertical propriamente dita, o trabalho pretende analisar e comparar a influência das amplitudes das imperfeições presentes no solo com a influência do atrito entre o duto e o solo nas cargas críticas e nas configuração pós-críticas do duto. Além de pesquisa teórica, os objetivos são atingidos através do desenvolvimento de vários modelos numéricos, desde modelos geometricamente simples, sem a consideração da interação entre o duto e o solo, até modelos mais complexos, com o uso de modelos de contato para detectar o solo e suas imperfeições. Os modelos são desenvolvidos no Giraffe (Generic Interface Readily Accessible for Finite Elements) usando elementos finitos geometricamente exatos de viga, sujeitos a grandes deslocamentos e rotações finitas. Através da pesquisa, conclui-se que existe uma equivalência entre a aplicação da pressão interna como um carregamento distribuído dependente da curvatura do duto e a aplicação da pressão interna como uma força axial de compressão seguidora. Além disso, demonstra-se que o tipo de análise (estática e dinâmica) depende da natureza do sistema físico analisado. Com a ajuda de resultados apresentados em termos de pressão interna, os resultados clássicos sobre a influência das amplitudes das imperfeições e do atrito entre o duto e o solo são confirmados. Também é mostrado que as amplitudes das imperfeições analisadas desempenham uma maior influência nas configurações pós-críticas do duto do que o atrito.

APA, Harvard, Vancouver, ISO, and other styles

8

Jančík, Jan. "Lineární analýza ztráty stability spalinového potrubí." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2016. http://www.nusl.cz/ntk/nusl-241227.

Full text

Abstract:

The diploma thesis deals with the loss of stability of thin-walled flue pipe at coal power plant. The problem of thin-walled structures is their propensity to the loss of stability due to abnormal conditions, for example a vacuum, effect of wind, snow and earthquake. The purpose is to find the optimal deployment of reinforcements so that the model meets the requirements of EN 1993-1-6. This required an evaluation of unreinforced version of the model to identify weaknesses and subsequently other configurations for the application of reinforcement. For determining the resistance the flue pipe to the loss of stability used primarily to access linear bifurcation analysis based on linear analysis, possibly materially nonlinear analysis. The result of work is a design of reinforcement of pipeline which under the requirements of the standard meets the latest model with a reserve of approximately 20 %.

APA, Harvard, Vancouver, ISO, and other styles

9

Chodraui, Gustavo Monteiro de Barros. "Análise teórica e experimental de perfis de aço formados a frio submetidos à compressão." Universidade de São Paulo, 2006. http://www.teses.usp.br/teses/disponiveis/18/18134/tde-31082006-152727/.

Full text

Abstract:

Os perfis de aço formados a frio apresentam, em geral, maior esbeltez local (relação largura-espessura dos elementos) em relação aos clássicos perfis laminados, acentuando a instabilidade local. Além disso, em se tratando de seções abertas com paredes muito delgadas, a rigidez à torção resulta muito pequena, o que torna os modos globais de torção e flexo-torção muitas vezes dominantes em relação aos modos de flexão. Outro modo de instabilidade que pode se manifestar é o modo distorcional, característico nos perfis com enrijecedores de borda. Com relação à análise do modo global, as normas para cálculo de perfis formados a frio têm adotado as mesmas curvas de resistência à compressão desenvolvidas para os perfis laminados e soldados, como a curva do SSRC (Structural Stability Research Council), adotada pela NAS (North American Specification), e as curvas européias, adotadas pela norma brasileira. Embora alguns estudos indiquem que as citadas curvas sejam aceitáveis para os perfis formados a frio, há também referências explícitas quanto à necessidade de um maior aprofundamento na investigação sobre o comportamento estrutural destes perfis, uma vez que apresentam particularidades quanto às tensões residuais, imperfeições geométricas e interação entre modos de instabilidade. Nesse trabalho é apresentada uma análise experimental em perfis usualmente empregados no Brasil (perfis U, U enrijecidos e cantoneiras simples e duplas), e uma estratégia de análise numérica não-linear, considerando os efeitos das imperfeições geométricas globais e localizadas (de chapa e distorcional), bem como das tensões residuais, de modo a se obter teoricamente um valor confiável da força normal de compressão resistente da barra. Os resultados permitiram constatar a viabilidade do emprego das atuais curvas de resistência à compressão para os perfis formados a frio. Complementando, foi analisada a aplicação do método da resistência direta (MRD) a todos os perfis estudados, confirmando bons resultados. Especial atenção foi dada ao estudo da estabilidade elástica de cantoneiras, com foco principal na coincidência entre o modo local-chapa e o modo global-torsional, o que tem gerado controvérsias na aplicação dos métodos de cálculo. Além disso, como as cantoneiras não são pré-qualificadas para aplicação do MRD, foram analisadas várias opções para emprego do método, onde pode-se concluir que desconsiderar a torção na análise do modo global conduz a resultados contra a segurança
Cold-formed steel members present, in general, higher local slenderness than classical hot- rolled ones, which make them more prone to local buckling. Besides, thin-walled open sections have small torsional stiffness, and hence global torsional and flexural-torsional instability modes are many times more critical than global flexural ones. Also, distortional mode can happen in sections with lips (edge stiffener). Concerning on global buckling for members under compression, curves used in cold-formed steel design are based on hot-rolled and welded members. For example, the SSRC (Structural Stability Research Council) buckling curve, adopted by NAS (North American Specification), and Eurocode buckling curves, adopted by brazilian codes. Although some papers indicate these curves are acceptable for cold-formed steel members, others claim for a deeper analysis on their unique structural behavior, specially on residual stress, geometric imperfections and coupled buckling modes. It is presented in this thesis an experimental analysis of sections usually used in Brazil (simple and lipped channels, and also single and built-up angles). Moreover, it is developed a strategy for numerical non-linear analysis, considering the effects of global and local (also distortional) geometric imperfections and residual stress as well, in order to obtain a trustable theoretical value for the axial member stength. Results show the viability of the current buckling curves for cold-formed steel members. Finally, direct strength method (DSM) was analysed for all studied members, showing good results. Special attention to angles elastic stability, focusing on the coincidence between local-plate and global-torsional mode, which still causes confusion in design methods. Also, due to the fact angles are not pre- qualified sections for using DSM, many options on its application were studied, where it was concluded that negleting torsion in global analysis leeds to unconservative results

APA, Harvard, Vancouver, ISO, and other styles

10

Baxant, Radek. "Řešení stability prutových konstrukcí." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2015. http://www.nusl.cz/ntk/nusl-227507.

Full text

Abstract:

This diploma thesis deals with the subject of slenderness bars’ stability assessment, especially in the steel structures. Before the assessment of bars in the frame constructions, we search for the influence of the computational model’s settings on the final result. The initial geometrical imperfections are examined on the model of Euler’s bar. The influence of the rigidity of girders on the poles’ buckling length is examined on the basic frame construction. The buckling lengths are assessed in the comparison with the figures we got from the statistical tables and the computational software. The influence of construction’s initial tilt and its replacement by the system of outer forces is examined on the frame structure. Three-hinged frame structure with variable cross-section member is designed then and the influence of non-linear calculations on the inner forces is studied. In the complex frame assessment, the influence of the number of parts of variable cross-section member on the bars’ buckling length is examined.

APA, Harvard, Vancouver, ISO, and other styles

More sources

Books on the topic "Linear buckling analysis"

1

E, Grady Joseph, and United States. National Aeronautics and Space Administration., eds. A NASTRAN DMAP alter for linear buckling analysis under dynamic loading. [Washington, DC]: National Aeronautics and Space Administration, 1989.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

2

Center, Langley Research, ed. The analysis of non-linear dynamic behavior (including snap-through) of postbuckled plates by simple analytical solution. Hampton, Va: National Aeronautics and Space Administration, Langley Research Center, 1988.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

3

Center, Langley Research, ed. The analysis of non-linear dynamic behavior (including snap-through) of postbuckled plates by simple analytical solution. Hampton, Va: National Aeronautics and Space Administration, Langley Research Center, 1988.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

4

The analysis of non-linear dynamic behavior (including snap-through) of postbuckled plates by simple analytical solution. Hampton, Va: National Aeronautics and Space Administration, Langley Research Center, 1988.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

5

A, Aminpour Mohammad, Knight Norman F, and United States. National Aeronautics and Space Administration., eds. Improved assumed-stress hybrid shell element with drilling degrees of freedom for linear stress, buckling and free vibration analyses. [Washington, DC: National Aeronautics and Space Administration, 1992.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

6

A, Aminpour Mohammad, Knight Norman F, and United States. National Aeronautics and Space Administration., eds. Improved assumed-stress hybrid shell element with drilling degrees of freedom for linear stress, buckling and free vibration analyses. [Washington, DC: National Aeronautics and Space Administration, 1992.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

7

A, Aminpour Mohammad, Knight Norman F, and United States. National Aeronautics and Space Administration., eds. Improved assumed-stress hybrid shell element with drilling degrees of freedom for linear stress, buckling and free vibration analyses. [Washington, DC: National Aeronautics and Space Administration, 1992.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

Book chapters on the topic "Linear buckling analysis"

1

Waszczyszyn, Z., and J. Pieczara. "Exact Finite Elements for the Linear Buckling Analysis of Unidimensional Structural Problems." In Discretization Methods in Structural Mechanics, 307–16. Berlin, Heidelberg: Springer Berlin Heidelberg, 1990. http://dx.doi.org/10.1007/978-3-642-49373-7_29.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Waszczyszyn, Z., M. Janus, and J. Pieczara. "A Numerical Approach to the Exact Finite Element Linear Buckling Analysis of Structures." In The finite element method in the 1990’s, 311–20. Berlin, Heidelberg: Springer Berlin Heidelberg, 1991. http://dx.doi.org/10.1007/978-3-662-10326-5_32.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Natarajan, S., S. M. Dsouza, A. L. N. Pramod, Hirshikesh, D. Adak, and K. Kamdi. "An Iso-Geometric Analysis of Tow-Steered Composite Laminates: Free Vibration, Mechanical Buckling and Linear Flutter Analysis." In Materials Horizons: From Nature to Nanomaterials, 411–31. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-33-4550-8_17.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

Akterskaia, M., E. Jansen, S. R. Hallet, P. M. Weaver, and R. Rolfes. "Post-buckling Progressive Failure Analysis of Composite Panels Using a Two-Way Global-Local Coupling Approach Including Intralaminar Failure and Debonding." In Advances in Predictive Models and Methodologies for Numerically Efficient Linear and Nonlinear Analysis of Composites, 83–102. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-11969-0_6.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

"Linear Buckling Analysis of Bar Structures." In Stability of Structures by Finite Element Methods, 143–213. Elsevier, 1994. http://dx.doi.org/10.1016/b978-0-444-82123-2.50010-0.

Full text

APA, Harvard, Vancouver, ISO, and other styles

6

"Linear Buckling Analysis of Surface Structures." In Stability of Structures by Finite Element Methods, 215–321. Elsevier, 1994. http://dx.doi.org/10.1016/b978-0-444-82123-2.50011-2.

Full text

APA, Harvard, Vancouver, ISO, and other styles

7

Wang, Xinwei. "Linear Buckling Analysis of Thin Plate." In Differential Quadrature and Differential Quadrature Based Element Methods, 134–52. Elsevier, 2015. http://dx.doi.org/10.1016/b978-0-12-803081-3.00007-3.

Full text

APA, Harvard, Vancouver, ISO, and other styles

8

Marcinowski, J. "Linear buckling analysis as a measure of the buckling resistance of shells." In Shell Structures: Theory and Application, 223–26. CRC Press, 2013. http://dx.doi.org/10.1201/b15684-54.

Full text

APA, Harvard, Vancouver, ISO, and other styles

9

Roy, Arabinda, and Rasajit Kumar Bera. "Stability Analysis of Thermal Bending and Buckling of Plates Due to Large Deflection." In Linear and Non-Linear Deformations of Elastic Solids, 482–90. CRC Press, 2019. http://dx.doi.org/10.1201/9780429319426-30.

Full text

APA, Harvard, Vancouver, ISO, and other styles

10

Han, S. E., and H. Kunieda. "33. Non-linear buckling analysis of double-layer latticed domes and application of modal analysis." In Space Structures 4, 1: 302–312. Thomas Telford Publishing, 1993. http://dx.doi.org/10.1680/ss4v1.19683.0033.

Full text

APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "Linear buckling analysis"

1

Persson, Thomas, and Daniel H. Suchora. "Plate Buckling Analysis Using the Linear Finite Element Method." In ASME 1997 Design Engineering Technical Conferences. American Society of Mechanical Engineers, 1997. http://dx.doi.org/10.1115/detc97/cie-4453.

Full text

Abstract:

Abstract The objective of this study was to develop new solutions for linear elastic buckling coefficients of rectangular flat plates with support conditions not previously found in the literature. Critical buckling coefficients were found for rectangular flat plates subjected to uniform compression on two opposite edges with one partially supported unloaded edge using the finite element method. Plates with different aspect ratios and with varying support length on the unloaded edges were analyzed. Currently, no solutions are available in the literature for plates subjected to uniform compression and with partially supported unloaded edges. The method developed in this work was verified on problems where closed form mathematical solutions exist. An engineer will be able to use the solutions developed in this work in the design of components that are susceptible to instability failures. Another benefit of this work is to demonstrate to practicing engineers that reliable instability results can be obtained by using standard finite element analysis (FEA) methods. This work considers a small subset of instability problems but the FEA method utilized herein can be effectively used to model a large class of practical instability problems.

APA, Harvard, Vancouver, ISO, and other styles

2

Bian, Xiang, Praveen Yadav, and Krishnan Suresh. "Assembly-Free Buckling Analysis for Topology Optimization." In ASME 2015 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/detc2015-46351.

Full text

Abstract:

Linear buckling analysis entails the solution of a generalized eigenvalue problem. Popular methods for solving such problems tend to be memory-hungry, and therefore slow for large degrees of freedom. The main contribution of this paper is a low-memory assembly-free linear buckling analysis method. In particular, we employ the classic inverse iteration, in conjunction with an assembly-free deflated linear solver. The resulting implementation is simple, fast and particularly well suited for parallelization. The proposed method is used here to solve large scale 3D topology optimization problems subject to buckling constraints, where buckling problems must be solved repeatedly.

APA, Harvard, Vancouver, ISO, and other styles

3

Asgari, H., and M. R. Eslami. "Nonlinear Thermal Buckling Analysis of FGM Shallow Arches Under Linear Temperature Gradient." In ASME 2014 12th Biennial Conference on Engineering Systems Design and Analysis. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/esda2014-20402.

Full text

Abstract:

In this study non-linear thermal buckling of circular shallow arches made of functionally graded materials subjected to a linear temperature gradient is investigated. For this purpose, a functionally graded circular shallow arch is considered that its strain-displacement relation follows the Donnells nonlinear shallow shell theory. The material properties are varied smoothly through the arch thickness according to the power law distribution of the volume fraction of constituent materials. Also, material properties are considered temperature-dependent. The classical single layer theory assumptions that are reasonable for slender arches are implemented. To investigate the large deformations of such arch, the von-Karman type geometrical nonlinearity is utilized that is suitable for moderately large class of rotations. The virtual displacement principle and calculus of variation are employed to derive the governing equilibrium equations and complete set of boundary conditions of the FGM arch. The adjacent equilibrium criterion is employed for the stability analysis of the FGM arch. An analytical approach is accomplished and a closed-forms solution for thermal bifurcation points of the FGM shallow arches is presented. Also critical bifurcation loads corresponding to the critical temperatures with the presence of non-linear pre-buckling deformations is obtained. Illustrative results examine the effect of various involved parameters such as power law index, opening angle, geometric parameter (or otherwise length to thickness ratio). Obtained numerical results represent that, in most cases, thermal bifurcation for the FGM arches occurs in the high temperatures and the critical buckling temperatures are approximately high even for slender FGM arches. Also effective of ceramic or metal rich area at the bottom surface of the FGM arch is investigated and results are presented for both cases and are compared together. Varieties between this two cases due to contrast between material and structural stretching-bending coupling effect. Results presented illustrative the ceramic rich area at the bottom surface cause the higher critical buckling temperatures for the FGM arches.

APA, Harvard, Vancouver, ISO, and other styles

4

Deng, Shiguang, and Krishnan Suresh. "Topology Optimization Under Linear Thermo-Elastic Buckling." In ASME 2016 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/detc2016-59408.

Full text

Abstract:

This paper focuses on topology optimization of structures subject to a compressive load in a thermal environment. Such problems are important, for example, in aerospace, where structures are prone to thermally induced buckling. Popular strategies for thermo-elastic topology optimization include Solid Isotropic Material with Penalization (SIMP) and Rational Approximation of Material Properties (RAMP). However, since both methods fundamentally rely on material parameterization, they are often challenged by: (1) pseudo buckling modes in low-density regions, and (2) ill-conditioned stiffness matrices. To overcome these, we consider here an alternate level-set approach that relies discrete topological sensitivity. Buckling sensitivity analysis is carried out via direct and adjoint formulations. Augmented Lagrangian method is then used to solve a buckling constrained compliance minimization problem. Finally, 3D numerical experiments illustrate the efficiency of the proposed method.

APA, Harvard, Vancouver, ISO, and other styles

5

Tsumoto, Koji, Hiroshi Yabuno, and Nobuharu Aoshima. "Stabilization of a Buckled Beam by High-Frequency Excitation: Linear Analysis and Experiments." In ASME 2005 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2005. http://dx.doi.org/10.1115/detc2005-84947.

Full text

Abstract:

Beam is one of the fundamental elements in complex structures. It is very significant to clarify its stability under the various circumstances. In particular, the buckling phenomenon, which is characterized as a pitchfork bifurcation, has accepted much interest by many researchers. In this paper, we propose a stabilization control method for the first-mode buckling phenomenon in the clamped-clamped beam without feedback control. We analyze the stability of a buckled beam under high frequency excitation in linear theory. It is theoretically clarified and experimentally that the high-frequency excitation shifts the bifurcation point (the critical compressive force) and prevents the beam buckling.

APA, Harvard, Vancouver, ISO, and other styles

6

Lê, Van Ngan, and Henri Champliaud. "Safety Factor of Welded-Plate Beams based on Finite Element Linear Buckling Analysis." In Computers and Advanced Technology in Education. Calgary,AB,Canada: ACTAPRESS, 2014. http://dx.doi.org/10.2316/p.2014.820-002.

Full text

APA, Harvard, Vancouver, ISO, and other styles

7

Sutharson, B., R. Sarala, and R. Kari Thangarathanam. "Geometric Non Linear Analysis of Composite Shells Under Thermomechanical Loading." In ASME 2005 Pressure Vessels and Piping Conference. ASMEDC, 2005. http://dx.doi.org/10.1115/pvp2005-71074.

Full text

Abstract:

A Geometric non-linear analysis of composite shells under thermomechanical loading has been discussed here. From the literature, it may be seen that the thermal stress analysis of structural elements has continued to remain a research topic for a couple of decades. No one computationally verified the geometric non-linear buckling of composite shells under thermomechanical loading using semiloof element. In this work, linear buckling analysis of Kari Thangaratnam (2) is extended to geometric non-linear analysis of composite shells under thermomechanical loading. A general shell element called the semiloof shell element has been extended to thermal stress analysis of laminated shells. The formulation is based on nonlinear theory and the finite element method using semiloof element. The validation checks on the program are carried out using results on homogeneous isotropic shells available in the literature. The parameters considered in analysis are (1) number of layers in the laminate, (2) Lay-up sequence (symmetry, antisymmetry, cross-ply etc.), (3) Fibre orientation angle, (4) Different aspect ratios, (5) Orthotrophy ratio, (6) Boundary conditions (simply supported, clamped and combination of boundary conditions).

APA, Harvard, Vancouver, ISO, and other styles

8

Sutharson, B., A. Elaya Perumal, and R. Kari Thangarathanam. "Geometric Non Linear Analysis of Composite Shells Under Thermomechanical Load." In ASME 2004 International Mechanical Engineering Congress and Exposition. ASMEDC, 2004. http://dx.doi.org/10.1115/imece2004-61422.

Full text

Abstract:

Geometric nonlinear analysis of composite shells under thermomechanical load is reported here. From the literature, it may be seen that the thermal stress analysis of structural elements has continued to remain a research topic for a couple of decades. No one computationally verified the geometric non-linear buckling of composite shells under thermomechanical load using semiloof element. In this work, linear buckling analysis of Kari Thangaratnam (2) is extended to geometric non-linear analysis of composite shells under thermomechanical load. A general shell element called the semiloof shell element has been extended to thermal stress analysis of laminated shells. The formulation is based on nonlinear theory and the finite element method using semiloof element. The validation checks on the program are carried out using results on homogeneous isotropic shells available in the literature. The parameters considered in analysis are (1) number of layers in the laminate, (2) Lay-up sequence (symmetry, antisymmetry, cross-ply etc.), (3) Fibre orientation angle, (4) Different aspect ratios, (5) Orthotrophy ratio, (6) Boundary conditions (simply supported, clamped and combination of boundary conditions).

APA, Harvard, Vancouver, ISO, and other styles

9

Schmidt, Jay, and Bernd Laskewitz. "3D Linear Bifurcation Analysis of Steel Containment Vessel." In 2016 24th International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/icone24-60673.

Full text

Abstract:

The AP1000® Containment Vessel (CV) is a freestanding steel containment designed to protect the public from radiation release. The CV consists of 2 ellipsoidal heads connected by a cylindrical shell and is constructed of carbon steel. The AP1000 plant design has four large penetrations (two airlocks and two equipment hatches) located in approximately the same quadrant of the circumference of the shell which imposes asymmetric effects in the shell structure. The CV is designed and constructed in accordance with ASME Boiler and Pressure Vessel Code, Section III, Subsection NE. Traditionally, the local and global stability of freestanding steel containments have been designed by use of formulae using conservative assumptions based on an axisymmetric structure. ASME Code Case N-284 “Metal Containment Shell Buckling Design Methods, Class MC Section III, Division 1” outlines methodology for satisfying the stability of the CV using two approaches. Section 1710 provides a stress based buckling approach using detailed formulae that assumes an axisymmetric structure. The second approach provides guidance and acceptability based on a linear bifurcation analysis (2D (1720) or 3D (1730)). Due to the asymmetric structure of the CV, the 3D linear bifurcation method delivers the most accurate results. The methodology and assumptions implemented by Westinghouse to qualify stability of the CV via Code Case N-284 are outlined. Also, the procedure to properly amplify the stresses as required by N-284 is included as justification of the methods used. This justification was thoroughly investigated by the Nuclear Regulatory Commission (NRC) and deemed acceptable.

APA, Harvard, Vancouver, ISO, and other styles

10

Baglioni, Stefano, Claudio Braccesi, Filippo Cianetti, Antonio Ficola, and Carmelo Anile. "Design of a Biomedical Device Through Non Linear Analysis." In ASME 2015 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/imece2015-51765.

Full text

Abstract:

The most widely accepted hypothesis to explain normal pressure hydrocephalus (NPH) points at the increase of cerebrospinal fluid (CSF) outflow resistance as the fundamental cause. Some clinical and experimental studies do not agree with this hypothesis and suggest that NPH is related to an alteration of the CSF pulse pressure waveform, while intracranial pressure (ICP) mean value has negligible effects. The current treatment of hydrocephalus is based on the first hypothesis and consists in the implantation of CSF shunts. An improved treatment can be obtained by damping the ICP pressure peaks and keeping unchanged the mean value. The target of this work is to design a special ICP regulator valve, that will be implanted in a human body and that must be characterized by a purely mechanical working principle avoiding any electrical equipment (sensors, actuators...). This device is currently patented [1] and in virtue of that the paper will focus only on the general device working principle and design methodology rather than specific data. Since the device must be implanted inside the patient head, the system must satisfy very restrictive requirements: low weight and dimensions in order to avoid possible patient discomfort or obstacles to the normal life activities, in addition, being the valve application place close to a delicate organ such the brain is, the mechanism must be very simple and must reach very high reliability standards (almost zero maintenance and possible failures). The idea is to realize a device in which the hydraulic flow is governed by a spring with variable stiffness with respect to the applied loads (intracranial pressure: characterized by both a mean constant component and by random oscillatory phenomenon). To maximize the valve effect about pressure peaks reduction, the spring will be designed with a strongly non-linear behavior characterized by bistable working principle. The systems that show this properties are innumerable, but according to the author hypothesis to realize a mechanism as simpler as possible the choice done falls into the thin curved plate (shell) category. In particular, the goal is to obtain a plate behavior called “Buckling Behavior”: under determined load conditions the plate geometric configuration must suddenly switch from an equilibrium position to another. The two target parameters which describe this phenomenon are the buckling critical load that is the applied load value for which the plate change the geometric configuration (valve activation point) and the load application point displacement (evacuation pipe opening). The adopted design method is the non-linear analysis developed in a finite element analysis (F.E.A.) environment, by which it is possible to analyze a component behavior also in case of large displacements. To identify the optimal component geometry the load application point displacement versus the acting load was evaluated as function of the main parameters describing the plate profile: plate semi-length, curvature radius and semi-length of the plate plane portion. This work represents only a preliminary study oriented to demonstrate the feasibility in realizing a biomedical valve for fluids pressure control, adopting a thin curved plate with “Buckling Behavior”. Moreover it provides useful information for the designer who wants to realize curved plate with buckling behavior showing the influence of the main geometric parameters on this phenomenon. Further in depth studies oriented to: the spring stiffness regulation for different patients, best material choice and productive process must be accomplished before the device realization.

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!