Relevant bibliographies by topics / Interface Elements; MSC.Nastran; Finite Element Method

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  1. Journal articles
  2. Conference papers

Academic literature on the topic 'Interface Elements; MSC.Nastran; Finite Element Method'

Author: Grafiati
Published: 4 June 2021
Last updated: 13 February 2022

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Journal articles on the topic "Interface Elements; MSC.Nastran; Finite Element Method"

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Balik, Ali, Meltem Ozdemir Karatas, and Haluk Keskin. "Effects of Different Abutment Connection Designs on the Stress Distribution Around Five Different Implants: A 3-Dimensional Finite Element Analysis." Journal of Oral Implantology 38, S1 (2012): 491–96. http://dx.doi.org/10.1563/aaid-joi-d-10-00127.

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The stability of the bone-implant interface is required for the long-term favorable clinical outcome of implant-supported prosthetic rehabilitation. The implant failures that occur after the functional loading are mainly related to biomechanical factors. Micro movements and vibrations due to occlusal forces can lead to mechanical complications such as loosening of the screw and fractures of the abutment or implants. The aim of this study was to investigate the strain distributions in the connection areas of different implant-abutment connection systems under similar loading conditions. Five di
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Cejpek, Jakub. "Design of composite landing gear for an LSA airplane." Aircraft Engineering and Aerospace Technology 90, no. 4 (2018): 679–87. http://dx.doi.org/10.1108/aeat-11-2016-0216.

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Purpose The purpose of this paper is to introduce a software tool under development by the author. Based on industry demands, a software tool is developed to fill the gap between commercial software and limited closed-form analysis in this specific area. Design/methodology/approach Python programming language offers a great potential to develop relatively simple software that includes graphical user interface and can be turned into an executable file – therefore easily spread. Also, thanks to large community, Python offers extended scientific libraries for solving number of engineering problem
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Gyekenyesi, J. P., and N. N. Nemeth. "Surface Flaw Reliability Analysis of Ceramic Components With the SCARE Finite Element Postprocessor Program." Journal of Engineering for Gas Turbines and Power 109, no. 3 (1987): 274–81. http://dx.doi.org/10.1115/1.3240036.

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The SCARE (Structural Ceramics Analysis and Reliability Evaluation) computer program on statistical fast fracture reliability analysis with quadratic elements for volume-distributed imperfections is enhanced to include the use of linear finite elements and the capability of designing against concurrent surface flaw-induced ceramic component failure. The SCARE code is presently coupled as a postprocessor to the MSC/NASTRAN general purpose, finite element analysis program. The improved version now includes the Weibull and Batdorf statistical failure theories for both surface and volume flaw-base
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Lewgoy, Hugo Roberto, Michel Nicolau Youssef, Maurício Rufaiel Matson, Jorge Antônio Javier Saldivar Bocangel, Camillo Anauate Netto, and Ricardo Amore. "Finite elements study of the Flexi Post and Flexi Flange post systems in a maxillary central incisor." Pesquisa Odontológica Brasileira 17, no. 2 (2003): 132–36. http://dx.doi.org/10.1590/s1517-74912003000200006.

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The use of post and core systems has become an excellent alternative for restoring endodontically treated teeth. The aim of this study was to evaluate the von Mises, maximal compressive and tensile stresses distribution using the Finite Element Method (FEM) on human teeth restored with different post and core systems. The analysis was made on endodontically treated maxillary central incisors. The post systems used in this investigation were the stainless steel or titanium Flexi Post/Flexi Flange. Composite resin was used as core material and resin cement was the cement material of choice to se
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Rao, MV Peereswara, K. Renji, and Dineshkumar Harursampath. "Asymptotic theory of 3D thermoelastic stress analysis of honeycomb sandwich panels with composite facesheets." Journal of Sandwich Structures & Materials 22, no. 6 (2018): 1952–82. http://dx.doi.org/10.1177/1099636218791105.

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This work presents an asymptotical thermoelastic model for analyzing symmetric composite sandwich plate structures. Use of three-dimensional finite elements to analyze real-life composite sandwich structures is computationally prohibitive, while use of two-dimensional finite element cannot accurately predict the transverse stresses and three-dimensional displacements. Endeavoring to fill this gap, the present theory is developed based on the variational asymptotic method. The unique features of this work are the identification and utilization of small parameters characterizing the geometry and
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Ptaszny, Jacek, and Marcin Hatłas. "Evaluation of the FMBEM efficiency in the analysis of porous structures." Engineering Computations 35, no. 2 (2018): 843–66. http://dx.doi.org/10.1108/ec-12-2016-0436.

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Purpose The purpose of this paper is to evaluate the efficiency of the fast multipole boundary element method (FMBEM) in the analysis of stress and effective properties of 3D linear elastic structures with cavities. In particular, a comparison between the FMBEM and the finite element method (FEM) is performed in terms of accuracy, model size and computation time. Design/methodology/approach The developed FMBEM uses eight-node Serendipity boundary elements with numerical integration based on the adaptive subdivision of elements. Multipole and local expansions and translations involve solid harm
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Lakhov, A. Y., and K. A. Lakhov. "TRANSLATION OF GEOMETRIC MODELS OF SINGLE-CONTOUR GEODESIC DOMES FROM ARCHICAD TO A NEUTRAL STEP FORMAT." Construction and industrial safety, no. 21 (73) (2021): 107–14. http://dx.doi.org/10.37279/2413-1873-2021-21-107-114.

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The methods of data exchange between CAD and CAE systems are described. The first method is using direct conversion, the second method is using neutral formats. The description of the modular system for designing and analysis the strength and stability of single-contour and double-contour geodesic shells GeoTran is given. The direct translation of geometric models from ArchiCAD to Patran/Nastran / Dytran has the disadvantage of having to develop translators for each data exchange scheme. It is proposed to implement the translation of geometric models in a neutral STEP format, which reduces the
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Okhten, Ivan, and Olha Lukianchenko. "Some aspects of consideration of initial imperfections in the calculations of stability of thin-walled elements of open profile." Strength of Materials and Theory of Structures, no. 106 (May 24, 2021): 122–28. http://dx.doi.org/10.32347/2410-2547.2021.106.122-128.

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Performed analysis of the initial geometric imperfections influence on the stability of the open C-shaped bars. Test tasks were solved in MSC Nastran, which is based on the finite element method. Imperfections are given in different formulations: the general stability loss of an ideal bar, of wavy bulging of walls and shelves, of deplanation of a bar. To model imperfections, has been developed a program which for the formation of new coordinates of the nodes of the "deformed" model, the components of a vector similar to the form of stability loss are added to the corresponding coordinates of t
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Kenchappa, Bharath, Lokamanya Chikmath, and Bhagavatula Dattaguru. "A study on prognostic analysis of attachment lugs under off-axis loading." International Journal of Structural Integrity 10, no. 6 (2019): 809–24. http://dx.doi.org/10.1108/ijsi-10-2018-0075.

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Purpose Lug joints with fasteners play a crucial role in connecting many major components of the aircraft. Most of the failures in the past were credited to the damages initiating and progressing from these types of joints. Ensuring the structural integrity of these fastener joints is a major issue in many engineering structures, especially in aerospace components, which would otherwise lead to fatal failure. The purpose of this paper is to adopting the prognostic approach for analysing these lug joints with fasteners subjected to off-axis loading by estimating the crack initiation and crack g
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Trzepiecinski, Tomasz, and Romuald Fejkiel. "A 3D FEM-Based Numerical Analysis of the Sheet Metal Strip Flowing Through Drawbead Simulator." Metals 10, no. 1 (2019): 45. http://dx.doi.org/10.3390/met10010045.

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Drawbeads are elements of the stamping die and they are used to compensate material flow resistance around the perimeter of the drawpiece or to change the stress state in specific regions of the drawpiece. This paper presents the results of experimental and numerical analyses of tests of sheet metal flowing through a drawbead. The tests have been carried out using a special tribological simulator of the drawbead. Experimental tests to determine the coefficient of friction (COF) have been carried out for three widths of sheet metal strip and two drawbead heights. The three-dimensional (3D) elas
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Conference papers on the topic "Interface Elements; MSC.Nastran; Finite Element Method"

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Nack, W. V. "Brake Squeal Analysis by Finite Elements and Comparisons to Dyno Results." In ASME 1999 Design Engineering Technical Conferences. American Society of Mechanical Engineers, 1999. http://dx.doi.org/10.1115/detc99/vib-8116.

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Abstract An approximate analysis method for brake squeal is presented. Using MSC/NASTRAN a geometric nonlinear solution is run using a friction stiffness matrix to model the contact between the pad and rotor. The friction coefficient can be pressure dependent. Next, linearized complex modes are found where the interface is set in a slip condition. Since the entire interface is set sliding, it produces the maximum friction work possible during the vibration. It is a conservative measure for stability evaluation. An averaged friction coefficient is measured and used during squeal. Dynamically un
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Weng, Yiliu, and Lipeng Zheng. "An Explicit-Implicit Time Integration Approach for Finite Element Evaluation of Engine Load Following an FBO Event." In ASME Turbo Expo 2017: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/gt2017-64636.

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Engine fan blade-off (FBO) is an extreme event that could well place the flight safety at risk. When it happens, the engine will experience high-velocity impact at first, and then enter into a “high-power” stage due to huge unbalance before coming to a steady state called “windmilling”. The analytical process for FBO can be split into two phases, one for impact simulation and the other for obtaining the FBO load to pylon. Typically, explicit method with fine mesh finite elements is used in the first phase, and implicit method with coarse meshes is adopted in the second one. In most cases, the
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Biria, M. J., Nima Shamsaei, Farzam Farahmand, and G. Reza Eslami A. "Stress Analysis of Three-Unit All-Ceramic Dental Bridges Using FEM." In ASME 8th Biennial Conference on Engineering Systems Design and Analysis. ASMEDC, 2006. http://dx.doi.org/10.1115/esda2006-95060.

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Mechanical fracture is a common cause of failure for 3-unit dental bridges, particularly, the all-ceramic structures. The purpose of the present study was to evaluate the effect of convergence angles of the abutments on the distribution of the mechanical stresses, within the prosthesis and at the restoration-abutments interface of a 3-unit all-ceramic bridge. The 3-D geometrical data of the second premolar and first and second molar teeth were obtained using ATOS scanner system and utilized for reconstruction of a surface model of the 3-unit bridge in I-Deas as solid modeler software. This was
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Gatta, Giuseppe, and Fulvio Romano. "A Design Approach of a Fuselage Barrel in Grid Structure." In ASME 2005 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2005. http://dx.doi.org/10.1115/detc2005-84166.

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In this paper a design method of a cylindrical fuselage barrel in grid structure to fabricate in composite material is illustrated. The approach can be divided in two phases. In the first step, a lattice structure, that is a grid structure with ribs only and without a skin, is sized thanks to an analytical approach. The independent variables to optimize are five: number of helical ribs, number of circumferential ribs, rib height, circumferential rib thickness, helical rib thickness. Some geometric constraints on the dimensions of the ribs are introduced. The best lattice structure is individua
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