%0 Journal Article
%T THE PROJECTED RELATION OF THE CONSERVATION INTEGRAL IN MICROCRACK SHIELDING PROBLEMS<br>微裂纹屏蔽问题中守恒积分投影关系
%A Chen Yiheng
%A Zhao Liguo
%A <br>陈宜亨
%A 赵利果
%J 力学学报
%D 1997
%I 
%X In this paper, the J integral conservation in adopting the continuum mechanics in the microcrack shielding problems is reexamined. From thetheoretical manipulation as well as the computational experiment, it is proved that there is a redistribution relation of the remote J integral in the microcracking damage region, i.e., the relation of theprojected conservation of the J k vector. In the relation, the J 2 component ignored by Herrmann and Herrmann plays an important role. It is concluded also that the elastic stiffness reduction, and the presence of strain/deformation due to the release of residual stresses are bothenergy dissipating processes which based on an energy balance approach give rise to toughening and thus crack-tip shielding.
%K microcracks
%K shielding
%K continuum damage
%K conservation integral<br>微裂纹
%K 屏蔽
%K 连续体损伤
%K 守恒积分
%K 损伤力学
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=5D344E2AD54D14F8&jid=4100DA4A1A3BA1B0CE5AD99AE1DFB420&aid=AE6D6FBC5E5081AC27EE72E0760450A0&yid=5370399DC954B911&vid=771469D9D58C34FF&iid=CA4FD0336C81A37A&sid=F4B561950EE1D31A&eid=8E6AB9C3EBAAE921&journal_id=0459-1879&journal_name=力学学报&referenced_num=5&reference_num=8