| 海洋工程结构物碰撞失效准则探讨 |
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| 引用本文： | 赵效东,张乐山.海洋工程结构物碰撞失效准则探讨[J].船海工程,2012,41(2):144-148. |
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| 作者姓名： | 赵效东 张乐山 |
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| 作者单位： | 德国劳氏船级社未来船舶技术咨询,上海,200020 |
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| 摘 要： | 以工程上常见的梁受压力弯曲破坏实验为例,分别选用V-M等效应变、厚度应变和主应变三种失效准则进行有限元模拟仿真,从理论公式和现实工程结论两个方面证明工程上普遍采用的V-M等效应变失效准则的局限性,并验证厚度应变和主应变失效准则的可行性,从而提出综合应变失效准则的概念,为工程上求解船舶和海洋工程结构碰撞问题时选取失效准则提供参考依据。
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| 关 键 词： | 碰撞 失效准则 V-M等效应变 厚度应变 主应变 |
Research of Failure Criterion of Offshore Structural Collision |
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| Authors: | ZHAO Xiao-dong ZHANG Le-shan |
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| Institution: | (Germanischer Lloyd,Shanghai 200020,China) |
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| Abstract: | By FE collision simulation for a common lateral loaded beam,it is evident that the application of V-M strain criterion,the conventional failure criterion which has been widely used in projects and academia,could not describe realistic structural failure correctly,while the thickness strain or major strain was reasonable.So the combination of thickness strain and major strain had be taken as failure criterion for the analysis of collision of offshore and ship structures. |
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| Keywords: | collision failure criterion V-M effective strain thickness strain major strain |
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