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摘要:
Using the concept of base forces as state variables, a new finite element method - the base force element method (BFEM) on complementary energy principle for linear elasticity problems is presented. Firstly, an explicit expression of compliance matrix for an element is derived through base forces by dyadic vectors. Then, the explicit control equations of finite element method of complementary energy principle are derived using Lagrange multiplier method. Thereafter, the base forces element procedure for linear elasticity is developed. Finally, several examples are analyzed to illustrate the reliability and accuracy of the formulation and the procedure.
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来源 :
SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY
ISSN: 1674-7348
年份: 2011
期: 11
卷: 54
页码: 2025-2032
6 . 4 0 0
JCR@2022
ESI学科: PHYSICS;
ESI高被引阀值:182
JCR分区:3
中科院分区:4