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| Study of twin shear unified elastoplastic finite difference method |
| Received:May 24, 2010 Revised:September 22, 2010 |
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| DOI：10.7511/jslx20121008 |
| KeyWord:twin shear unified strength theory Lagrangian finite difference elastoplastic analysis numerical simulation |
| Author | Institution |
| 马宗源 |
西安理工大学 土木建筑工程学院, 西安 |
| 廖红建 |
西安交通大学 土木工程系, 西安 |
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| Abstract: |
| Based on the Lagrangian finite difference method, format of twin shear unified elastoplastic finite difference is established. Twin shear unified elastoplastic model loaded into software of FLAC (Fast Lagrangian Analysis of Continua) using a dynamic-link library file which developed by VC++. The progressive failure of structure under complex stress state can be simulated by twin shear unified elastoplastic finite difference method, moreover, no stiffness matrix and nonlinear iterative created in the calculation proceess. Thus, it has positive significance for theory and application of engineering. In this paper, the thick walled cylinder under inner pressure, tension and compression of perforated plate, limit analysis of strip footing and slope problem for SD (Strength Difference) material is analyzed. The results of numerical and slip line field method are compared, and the results of two methods are similar. |
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