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。
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.
出处
《船海工程》
2012年第2期144-148,共5页
Ship & Ocean Engineering
关键词
碰撞
失效准则
V-M等效应变
厚度应变
主应变
collision
failure criterion
V-M effective strain
thickness strain
major strain
