Full-Text Search:
Home|Journal Papers|About CNKI|User Service|FAQ|Contact Us|中文
《Explosion and Shock Waves》 2002-04
Add to Favorite Get Latest Update

Calculation of the Distribution Rule of Strain Rate near the Stagnation Point during Explosive Welding

LI Xiao jie, YAN Hong hao, WANG Jin xiang, ZHANG Jian chen, XI Jin yi, DONG Shou hua (Department of Engineering Mechanics, Dalian University of Technology, Dalian 116023, Liaoning, China)  
It is important to analyze the distribution of strain rate near the stagnation point for understanding the mechanic and heat behaviors of the material during explosive welding. It is also useful for analyzing formation of interface waves and the adiabatic shear bands(ASB). In this paper, an ideal fluid model of symmetrically colliding is taken to analyze the distribution rule of strain rate on streamlines, and a theoretical formula of strain rate is also deduced. According to theoretical and numerical calculation, the influences of oblique colliding angle and interface distance on the strain rate are also discussed. The results show that the deformation caused by explosive welding are quite centralized nearby the stagnation point and the strain rates of the stagnation point can approach to 10 6~10 7s -1 . The absolute value of tensile and compression strain rate get to their maximum at the stagnation point, but there is no shear strain at explosive welding interface, the maximum of shear strain appears in front of stagnation point and approaches to be two times of tensile and compression strain rate.
【Fund】: 国家自然科学基金项目 (19972 0 1510 172 0 2 5 );; 辽宁省自然科学基金项目
【CateGory Index】: TG456.6
Download(CAJ format) Download(PDF format)
CAJViewer7.0 supports all the CNKI file formats; AdobeReader only supports the PDF format.
©2006 Tsinghua Tongfang Knowledge Network Technology Co., Ltd.(Beijing)(TTKN) All rights reserved