Nonlinear elastic-plastic analysis using the modified finite quasi-prism element
| Autor: | G. L. Kinzel, Ramana V. Grandhi, R. M. Hoffman |
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| Rok vydání: | 2004 |
| Předmět: |
Finite element limit analysis
Applied Mathematics Spectral element method General Engineering hp-FEM Geometry Mixed finite element method Computer Graphics and Computer-Aided Design Finite element method Smoothed finite element method Applied mathematics Superelement Analysis Mathematics Extended finite element method |
| Zdroj: | Finite Elements in Analysis and Design. 40:449-460 |
| ISSN: | 0168-874X |
| DOI: | 10.1016/s0168-874x(03)00072-6 |
| Popis: | Three-dimensional nonlinear finite element problems are generally very time consuming to solve accurately. A modified version of the Finite quasi-prism (FQP) element is an accurate and efficient alternative to conventional nonlinear elastic-plastic finite element analysis of bodies of nearly prismatic geometry. One Modified FQP element can replace several standard eight-noded hexahedral elements by using higher order interpolation functions in the direction of the nearly constant cross-section.The reduction in the number of elements translates into fewer finite element equations to solve, leading to a significant decrease in CPU time for nonlinear problems, which require multiple iterations per increment. In addition to the decrease in solution time, the analysis results using this element are smoother and very near theoretical solutions. The formulation of the Modified FQP element and a thorough discussion of the properties of this element are given in this paper. Solution accuracy is evaluated by comparisons with both analytical results and a commercial code. |
| Databáze: | OpenAIRE |
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