A Study on the Dynamic Response of Interfacial Crack Subject to the Impact Load

机译：冲击载荷作用下界面裂纹的动力响应研究

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In this study, the impact response of the crack tip parameters, energy release rate (J integral) and Trnstress, with conditions of dynamic fracture using both numerical and experimental method wasrninvestigated. Firstly, we performed experiments using bimaterial specimens under the mixed modernimpact loading. Secondly, we analyzed the dynamic problem by FEM using the measured impactrnloading and crack initiation time. Thirdly, we calculated elastodynamic J integral and T stress usingrndomain integral method and interaction energy method respectively. Under the static loading condition,rnT stress increased with the increasing of unsymmetry of applied pressure. Under the dynamic loadingrncondition, the loading patterns and crack initiation times varied according to the positions of crack tipsrnunder the same impact energy. The energy release rates at the crack initiation time showed constantrnvalues, however, T stresses did not showed distinctive trend.

机译：本研究利用数值和实验方法研究了裂纹尖端参数，能量释放速率（J积分）和Trnstress在动态断裂条件下的冲击响应。首先，我们在混合现代冲击载荷下使用双材料样本进行了实验。其次，我们使用测得的冲击载荷和裂纹萌生时间，通过有限元法分析了动力学问题。再次，分别使用rndomain积分法和相互作用能法计算了弹性力学J积分和T应力。在静态载荷条件下，rnT应力随着施加压力不对称性的增加而增加。在动态加载条件下，在相同冲击能量下，加载方式和裂纹萌生时间根据裂纹尖端的位置而变化。裂纹萌生时的能量释放速率显示出恒定的值，但是，T应力没有表现出明显的趋势。

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来源
《Asian Pacific conference for fracture and strength'99 (APCFS'99)》|1999年|p.1-14|共14页
会议地点 Xian(CN);Xian(CN)
作者
Dong Kil Shin; Jung Ju Lee; Min Young Lyu; Young Do Kwon;
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作者单位

Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology,rn373-1 Kusong-dong, Yusong-gu, Taejon 305-701, KOREA(south);

Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology,rn373-1 Kusong-dong, Yusong-gu, Taejon 305-701, KOREA(south);

Polymeric Materials Research Samyang Central RD,rn63-2 Hwaam-dong, Yusong-gu, Taejon 305-348, KOREA(south);

Polymeric Materials Research Samyang Central RD,rn63-2 Hwaam-dong, Yusong-gu, Taejon 305-348, KOREA(south);

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原文格式 PDF
正文语种 eng
中图分类机械制造用材料;
关键词
energy release rete; t stress; bimaterial; impact loading; dynamic fracture;

机译：能量释放网； t应力；双材料；冲击载荷；动态断裂;

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1. The Separated Dynamic J Integrals and Response Simulations of Interfacial Cracks Subject to Impact Loading [J] . Toshihisa NISHIOKA, Anwer YASIN 日本機械学会論文集. A編 . 1999,第632期

机译：冲击载荷作用下界面裂纹的分离动力J积分与响应模拟
2. Dynamic response of interfacial finite cracks in orthotropic materials subjected to concentrated loads [J] . C. Rubio-Gonzalez, E. Lira-Vergara International Journal of Fracture . 2011,第2期

机译：正交载荷下正交异性材料界面有限裂纹的动力响应
3. Dynamic response of interfacial finite cracks in orthotropic materials subjected to concentrated loads [J] . C. Rubio-Gonzalez, E. Lira-Vergara International Journal of Fracture . 2011,第2期

机译：正交载荷下正交异性材料界面有限裂纹的动力响应
4. Dynamic Response of Interfacial finite Cracks in Orthotropic Materials subjected to Concentrated Loads [C] . Rubio-Gonzalez, E. Lira-Vergara International Conference on Fracture . 2009

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5. A study of the response of a concrete crash barrier subjected to vehicle impact loads at various speeds and angles of impact. [D] . Jaber, Mike M. 1996

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A Study on the Dynamic Response of Interfacial Crack Subject to the Impact Load

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