| 摘要: |
| 提出了用以判别梁的有限变形精确理论与近似理论的3条准则，在李明瑞的2维梁有限变形精确理论的基础上推导出几种合理的简化理论，将Reissuer-Simo理论补充成为完整的近似理论，通过算例对各种理论作了比较。 |
| 关键词: 2维梁,有限变形,精确理论,近似理论,判别准则 |
| DOI： |
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| 基金项目:国家自然科学基金 |
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| Exact and Approximate Finite Deformation Theories of 2-D Beam |
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| Abstract: |
| The criteria used to classify exact and approximate finite deformation theories areproposed. Based on the exact finite deformation theory of 2-D beam proposed by Li, severaluseful approximate finite deformation theories are derived. The Reissner-Simo theory isdiscussed and made into complete approximate. Numerical examples are calculated indifferent theories for comparison. |
| Key words: 2-D beam,finite deformation,exact theory,approximate theory,criteria, |
