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| EXTENDED VARIATIONAL PRINCIPLE IN NONLINEAR THEORY OF ELASTICITY | |
| 作者姓名： | 郑泉水 |
| 作者单位： | Department of |
| 摘 要： | From the extended energy functional, a unified variational principle and an extended variational principle are given and proved in this paper. It is about the non-conservative, abrupt and divided domains static (or kinetic) system and by using the undetermined energy functional, we can immediately deduce various variational principles. |
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