%0 Journal Article
%T A DESIGN METHOD TO EXTEND THE LIFE OF A MOLD BY COLD UPSET PUNCHING BOLT<br>一种提高冷镦件模具寿命的设计方法
%A WANG Fengcai
%A ZHU Wenqin
%A <br>王凤才
%A 祝文琴
%J 力学与实践
%D 2006
%I 
%X In view of the fact that for the cold upset mold of the whole-mold structure, the fatigue life is rather short, a new design method is proposed to replace the whole mold with the mold structure of a three-layer cylinder and thus to change the loading on the mold and to achieve a longer life. According to the testing results of cold upset bolt and the results of stress analysis, empirical formulas are obtained.
%K cold upset bolt
%K concave mold
%K stress concentration
%K fatigue life
%K overflow<br>冷镦
%K 凹模
%K 应力集中
%K 疲劳寿命
%K 过盈量
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=5D344E2AD54D14F8&jid=0BF5C9FB031A532ED0A6D99DC4F6181A&aid=BE11B88C4055212D&yid=37904DC365DD7266&vid=D3E34374A0D77D7F&iid=CA4FD0336C81A37A&sid=1D0FA33DA02ABACD&eid=0401E2DB1F51F8DE&journal_id=1000-0879&journal_name=力学与实践&referenced_num=0&reference_num=4