Configurational fracture toughness from the perfectly plastic field ahead of the tip of a sharp V-notch under longitudinal shear
Configurational fracture toughness from the perfectly plastic field ahead of the tip of a sharp V-notch under longitudinal shear
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弹性通解中包含的任意函数的守恒量非经典定律及其应用
DOI：
10.1016/j.euromechsol.2015.08.007
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发表时间：
2016-01-01
影响因子：
4.1
通讯作者：
Shi, Weichen
中科院分区：
文献类型：
--
作者：
Shi, Weichen
本文考虑的是一个具有尖V形切口的无限大理想弹塑性材料在纵向剪切作用下的问题，并给出了一般弹塑性边界条件下小范围屈服时KM主导场的封闭解。建立了物理参数S-W、缺口尖端张开位移（NTOD）和弹性能量释放率的等效关系。等效恒等式包含一个特征长度，它取决于尖V形切口和裂纹的临界塑性场尺寸、尖端张开位移和应力强度因子。(C)2015年Elsevier Masson SAS。All rights reserved.
To be considered is an infinite elastic-perfectly plastic material with a sharp V-notch under longitudinal shear, and the closed-form solution of KM-dominant field is presented for the general case of elastic -plastic boundary in small-scale yielding. The equivalent identity of the physical parameter S-W, notch tip opening displacement (NTOD) and elastic energy release rate is established. The equivalent identity includes a characteristic length, which depends on the critical perfectly plastic field sizes, tip opening displacements and stress intensity factors of both sharp V-notch and crack. (C) 2015 Elsevier Masson SAS. All rights reserved.