Finite element analysis of nonlinear problems in the dynamical theory of coupled thermoelasticity

1969 ◽  
Vol 10 (4) ◽  
pp. 465-475 ◽  
Author(s):  
J.T. Oden
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Nonlinear Problems ◽  
Dynamical Theory ◽  
Element Analysis ◽  
Coupled Thermoelasticity

scholarly journals FINITE-ELEMENT ANALYSIS OF NONLINEAR PROBLEMS OF DEFORMATIONOF MHS FILLING UNDER IMPACT LOADING

2016 ◽  
Vol 78 (1) ◽  
pp. 60-69
Author(s):  
A. V. Demareva ◽  
◽  
A. I. Kibets ◽  
A. Yu. Kibets ◽  
I. A. Frolova ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Impact Loading ◽  
Nonlinear Problems ◽  
Element Analysis

Finite Element Analysis of the Biaxial Tensile Specimen of Woven Architectural Membrane Material

2012 ◽  
Vol 557-559 ◽  
pp. 830-834
Author(s):  
Rong Ping Cao ◽  
Hong Lei Yi
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Test Specimen ◽  
Nonlinear Problems ◽  
Tensile Specimen ◽  
Membrane Material ◽  
Element Analysis ◽  
Tensile Test Specimen ◽  
The Finite Element Analysis ◽  
Abaqus Software

The finite element analysis (FEA) has been widely used in research and production. It is well known that ABAQUS software is famous for its capacity of solving nonlinear problems. Create the test specimen model that is based on biaxial cross tensile test specimen of woven architectural membrane material by the ABAQUS software. The effects of the fillet radius(R), the width of the specimen (W), the length (L) and the number (N) of the crack are considered. It is found that while the whole specimen is 180*180mm it is most uniform when the R is 5mm, the W is 60mm, the L is about 60mm and the N is 5.

Finite Element Analysis of Free Expansion of Coronary Stent Based on ANSYS Workbench

2013 ◽  
Vol 662 ◽  
pp. 626-631
Author(s):  
Wen Yan Yu ◽  
Jian Guo Wang
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Deformation Behaviour ◽  
Nonlinear Problems ◽  
Axial Direction ◽  
Coronary Stent ◽  
Expansion Process ◽  
Element Analysis ◽  
Free Expansion ◽  
Design And Optimization

Undertaking the 316L stainless steel as a medical stent material and the coronary stent structure as the research object, ANSYS Workbench12.0 is used to simulate the free expansion process of coronary stent by two expansion methods. Finite element analysis is used to solve such problems as deformation behaviour of the stent, mechanical behaviour as well as nonlinear problems of the stent and balloon interaction during the free expansion process. The simulation results show that the stent and balloon interaction process will appear slip phenomenon, the stent shortening in the axial direction and elongating in the radial direction, and that the arc supporting rod location of the stent is the main area of the maximum stress. These can provide a scientific reference for the next new stent design and optimization.

scholarly journals Partial Refactorization in Sparse Matrix Solution: A New Possibility for Faster Nonlinear Finite Element Analysis

2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
Qi Song ◽  
Pu Chen ◽  
Shuli Sun
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Nonlinear Analysis ◽  
Degrees Of Freedom ◽  
Optimization Problems ◽  
Sparse Matrix ◽  
Nonlinear Problems ◽  
Local Change ◽  
Matrix Solution ◽  
Element Analysis

This paper proposes a partial refactorization for faster nonlinear analysis based on sparse matrix solution, which is nowadays the default solution choice in finite element analysis and can solve finite element models up to millions degrees of freedom. Among various fill-in’s reducing strategies for sparse matrix solution, the graph partition is in general the best in terms of resultant fill-ins and floating-point operations and furthermore produces a particular graph of sparse matrix that prevents local change of entries from wide spreading in factorization. Based on this feature, an explicit partial triangular refactorization with local change is efficiently constructed with limited additional storage requirement in row-sparse storage scheme. The partial refactorization of the changed stiffness matrix inherits a big percentage of the original factor and is carried out only on partial factor entries. The proposed method provides a new possibility for faster nonlinear analysis and is mainly suitable for material nonlinear problems and optimization problems. Compared to full factorization, it can significantly reduce the factorization time and can make nonlinear analysis more efficient.

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