%0 Journal Article
%T FEA OF EVALUATING MATERIAL YIELD STRENGTH AND STRAIN HARDENING EXPONENT USING A SPHERICAL INDENTATION<br>球形压痕法评价材料屈服强度和应变硬化指数的有限元分析
%A CUI Hang
%A CHEN Huaining
%A CHEN Jing
%A HUANG Chunling
%A WU Changzhong
%A <br>崔航
%A 陈怀宁
%A 陈静
%A 黄春玲
%A 吴昌忠
%J 金属学报
%D 2009
%I 
%X Dimensional analysis was constructed to derive the dimensionless functions of a spherical indenter with 1 mm in diameter. The function can be used to extract the yield strength and strain hardening exponent of metal materials by means of finite element analysis. The fitting functions used to analyze materials yield strength and strain hardening exponent within the yield strains ranging from 0.00769 to 0.04 were obtained by numerical simulation. It has been validated that the prediction accuracy is enhanced and the average errors of the yield strength and strain hardening exponent are 1.6% and 12.6%, respectively.
%K FEA (finite element analysis)
%K spherical indentation
%K yield strength
%K strain hardening exponent
%K dimensionless function<br>有限元分析(FEA)
%K 球形压痕
%K 屈服强度
%K 应变硬化指数
%K 无量纲函数
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=AB188D3B70B071C57EB64E395D864ECE&jid=B061E1135F1CBDEE96CD96C109FEAD65&aid=A7B3C2FCFC8A5D03B3365ECA7DBA87BE&yid=DE12191FBD62783C&vid=94E7F66E6C42FA23&iid=0B39A22176CE99FB&sid=3A0155B37D8FF829&eid=5D9D6A8FC2C66FD8&journal_id=0412-1961&journal_name=金属学报&referenced_num=1&reference_num=10