%0 Journal Article
%T CRACK TRAPPING PHENOMENA IN DYNAMIC CRACK PROPAGATION<br>动态裂纹扩展中的裂纹滞留现象
%A Li Xiangping
%A Meng Xianhong
%A Liu Chuntu Wang Kai
%A <br>李湘平
%A 孟宪红
%A 柳春图
%A 王凯
%J 力学学报
%D 1997
%I 
%X Using the mode I weight function of Willis et al. (1995)for a moving crack in combination with the model method of Rice et al. the instabilityphenomena of the crack front, how does it begin to surround andpenetratevarious arrays of asperities are investigated. The numerical results showthat the oscillatory crack tip motion through brittle, locallyheterogeneous materials results from constructive destructiveinterference of stress waves that can lead to continuing fluctuation of the crack front and propagation velocity.
%K dynamic fracture
%K asperity
%K three
%K dimension
%K propagation
%K perturbation
%K interaction<br>动态断裂，粗糙微粒，三维，扩展，扰动，相互作用
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=5D344E2AD54D14F8&jid=4100DA4A1A3BA1B0CE5AD99AE1DFB420&aid=AE6D6FBC5E5081ACE949EAC1EEF65F3B&yid=5370399DC954B911&vid=771469D9D58C34FF&iid=E158A972A605785F&sid=09AA1448D1EAF9C1&eid=5335AD3CFE6E14EA&journal_id=0459-1879&journal_name=力学学报&referenced_num=0&reference_num=5