摘要
鉴于现有Lr 参量处理复杂载荷时的局限性 ,本文从其反映含缺陷结构接近塑性失效程度的物理意义出发 ,基于不同的塑性屈服准则 ,提出了一个新的Lr 参量定义。该定义不仅与原来的定义具有一致性 ,而且适用于复杂的载荷状态 ,具有独特的优越性 ,满足了工程的需要。最后对Lr
After analyzing the limitation of the exiting Lr definition, a new Lr parameter was defined based on different yield criteria and the original sense of the Lr parameter that reflected the state of defected structure approaching the plastic collapse failure mode. The new definition was not only identified with the existing Lr, but also could be used for assessment of the integrity of defected structure under combined loadings, and met the engineering needs. At last, some discussion was presented about the Lr parameter.
出处
《机械强度》
EI
CAS
CSCD
北大核心
2001年第1期8-10,共3页
Journal of Mechanical Strength
基金
国家"九五"科技攻关项目资助!(96 91 8 0 2 0 3)。
