压力容器2016，Vol.33Issue(9)：11-17,7.DOI:10.3969/j.issn.1001-4837.2016.09.002
双轴载荷下含沿厚度方向贯穿裂纹平板的极限载荷分析
Analysis on Limit Load for Plates with Extended Cracks along Thickness Direction under Biaxial Loading
摘要
Abstract
The loading conditions of defective components are usually simplified to uniaxial loading from the actual multiaxial loading in existing structural integrity assessment criteria.However,the study of do-mestic and foreign scholars found that load parallel to the crack surface may have a greater impact on the assessment results.A global limit load solution for plates with extended cracks along thickness direction under combined biaxial force/stress and through-thickness bending moment is derived based on Tresca criterion.yield lines has been gotten by the m1L-n1L and m1L-n2L graphs.The influence of biaxial load-ing on defective components has been discussed.The results show that if the load parallel to the crack sur-face is ignored,the limit loads will always be overestimated.When tension/compression stress is domina-ted,if meeting the conditions of 0≤λ2≤2/(1 -β),overestimated degree is not obvious,but if meeting the conditions ofλ2 >2/(1 -β)orλ2 <0,overestimated degree is obvious.关键词
双轴载荷/贯穿裂纹/平板/极限载荷Key words
biaxial loading/extended cracks/plate/limit load分类
机械制造引用本文复制引用
吕原君,高增梁..双轴载荷下含沿厚度方向贯穿裂纹平板的极限载荷分析[J].压力容器,2016,33(9):11-17,7.基金项目
国家自然科学基金项目（41427802）；浙江省教育厅一般科研项目 （）
