摘要
本文利用弹塑性线弹簧模型建立了一种裂纹梁的弹塑性动态断裂分析的新方法 ,它可以对线弹性变形阶段、弹塑性变形阶段、裂纹稳定扩展阶段和裂纹不稳定扩展阶段的裂纹梁动态断裂问题建立易于求解的常微分方程组 。
A new method that analyzes the elasto-plastic dynamic fracture of a cracked beam is established using an elasto-plastic line-spring model. The dynamic fracture problem of a cracked beam in cases of linear elasticity, of elasto-plasticity, when cracks are extending steadily and when cracks are extending unsteadily can all be reduced to a set of ordinary differential equations. Numerical results for a freely supported cracked beam under uniform dynamic loading are given.
出处
《兵工学报》
EI
CAS
CSCD
北大核心
2000年第2期153-157,共5页
Acta Armamentarii
基金
国家自然科学基金资助项目! ( 192 72 0 70 )
关键词
动态断裂
裂纹梁
弹塑性线弹簧模型
dynamic fracture, cracked beam, elasto-plastic line-spring model
