Research on new type of numerical method for material creep analysis |
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Authors: | Guang-ming Zhao |
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Affiliation: | School of Mining and Safety, Anhui University of Science and Technology, Huainan 232001, China |
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Abstract: | Based on the principles of virtual work for continuum medium, the element free Galerkin method to simulate the numerical calculations of steady-state creep was used and the discrete equation was derived in meshlss method for steady-state creep. The essential boundary conditions and volume incompressible conditions can be realized by employing the penalty parameters, so the symmetric positive definite system stiffness matrix can be yielded. Results of numerical cases show that element free Galerkin method, with its high accuracy, is much more convenient to deal with the pre-process and post-process, the results by meshless method is in good agreement with the exact solution data. Supported by the Youth Science Foundation of Anhui Province(08040106831); Key Projects on College Natural Science Research of Anhui Province (KJ2008A125) |
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Keywords: | material creep meshless method element free Galerkin method penalty method |
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