DYNAMIC RESPONSE OF FINITE-SIZE CRACK UNDER IMPULSE LOADING

机译：冲击载荷作用下有限裂纹的动力响应

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In this paper, the analysis of a plane square tensile impulse wave acting on a finite-size crack at oblique incidence is proposed. Under the action of compression-shear or tension-shear cases, stresses can be rapidly applied at the crack ends. By taking account of time duration, the stress field near the crack is obtained from the super-position of the incidence waves and reflection waves. The dynamic stress intensity factor (DSIF) is calculated from the equations developed in terms of the change of stress-free zone and the stress field. The angle of initiation of the crack can be predicted. The method of optimizing fracture by stress pulses is discussed.

机译：本文对斜入射时作用在有限尺寸裂纹上的平面方波冲击波进行了分析。在压剪或拉剪情况下，应力可迅速施加到裂纹末端。通过考虑持续时间，可以从入射波和反射波的叠加获得裂纹附近的应力场。动态应力强度因子（DSIF）是根据无应力区域和应力场的变化而开发的方程式计算得出的。可以预测裂纹的萌生角度。讨论了通过应力脉冲优化断裂的方法。

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来源
《Asia-Pacific Conference on Shock amp; Impact Loads on Structures; 20031112-14; Changsha, Hunan,(CN)》|2003年|P.239-250|共12页
会议地点 Changsha Hunan(CN)
作者
X.B. Li; L.Q. Hu; T.S. Lok;
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作者单位

Central South University, China;

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会议组织
原文格式 PDF
正文语种 eng
中图分类抗震动结构、防灾结构;
关键词
stress waves; dynamic stress intensity factor; fracture dynamic mechanics;

机译：应力波；动应力强度因子；断裂动力力学;

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DYNAMIC RESPONSE OF FINITE-SIZE CRACK UNDER IMPULSE LOADING

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