%0 Journal Article
%T FINITE ELEMENT SIMULATION OF SUPERPLASTIC BULGING WITH A DIE UNDER DIFFERENT PRESSURE MODES<br>超塑性充模胀形的有限元模拟
%A LI Yuanchun
%A JIN Jing LI Miaoquan
%A WU Shichun
%A <br>李园春
%A 金菁
%A 李森泉
%A 吴诗
%J 材料研究学报
%D 1997
%I 
%X The optimum pressure norm in superplastic bulging with a die is determined by tracing the element with the largest strain rate and maintaining the strain rate at the optimum value, and the bulging processes under two kinds of pressure modes including constant pressure and optimum pressure norm are simulated by using large rigid-viscoplastic finite element method (FEM). The numerical results of the two pressure modes are compared and the effects of the strain rate sensitivity index m on the bulging process is analysed simultaneously.
%K the optimum pressure norm rigid-viscoplastic FEM superplastic bulging<br>刚粘塑性
%K 有限元
%K 超塑性充模胀形
%K 压力加工
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=84529CA2B2E519AC&jid=C101C4C04993B4D94FCD8446E6CBEB3B&aid=019DEAB55DD357BA&yid=5370399DC954B911&vid=708DD6B15D2464E8&iid=E158A972A605785F&sid=315A3D008C6ECFC8&eid=A7AE820C12CC9AD3&journal_id=1005-3093&journal_name=材料研究学报&referenced_num=0&reference_num=4