Study on Mixed Mode Crack-tip Plastic Zones in CTS Specimen
Study on Mixed Mode Crack-tip Plastic Zones in CTS Specimen
复制标题
CTS试件混合模式裂纹尖端塑性区的研究
DOI：
--
复制
发表时间：
2008
期刊：
影响因子：
--
通讯作者：
Shashidhar K. Kudari
中科院分区：
文献类型：
--
作者：
C. M. Sharanaprabhu;Shashidhar K. Kudari
裂纹尖端塑性区的研究对于描述破坏过程和制定各种断裂准则具有重要意义。材料的开口型断裂(I型)并不是导致裂纹扩展的唯一原因。许多工业实例表明，在机器/结构部件中存在模式II和混合模式I+II加载。在本研究中，重点研究了I型、II型和I+II型复合加载条件下裂纹尖端塑性区的大小和形状。根据von Mise屈服准则，估算了复合型加载下紧凑型拉伸剪切(CTS)试件中裂纹尖端塑性区的形状和大小。根据加载角度和有效应力强度因子对计算结果进行了分析。
The studies on crack-tip plastic zones are of fundamental importance in describing the process of failure and in formulating various fracture criteria. The material fracture by opening mode (mode I) is not lonely responsible for fracture propagation. Many industrial examples show the presence of mode II and mixed mode I + II loading in machine/structural components. In the present study, an emphasis is laid to study the size and shape of the plastic zone at the crack tip under mode I, mode II and mixed mode I + II loading conditions. The shape and size of crack-tip plastic zones have been estimated in a Compact tensile shear (CTS) specimen under mixed mode loading according to von Mises yield criteria. The results obtained are analyzed with reference to loading angle and effective stress intensity factor.