小冲杆蠕变试样中心挠度-蠕变应变关系的有限元分析  

Finite Element Analysis of the Relation Between the Center Deflection and the Creep Strain of a Small Punch Specimen

作　　者：杨镇[1] 王志文[1] 

机构地区：[1]华东理工大学

出　　处：《化工机械》2004年第1期24-27,32,共5页Chemical Engineering & Machinery

摘　　要：利用有限元数值方法分析了小冲杆试样中心挠度δ与中心蠕变应变ε之间的关系 ,指出该δ ε关系与蠕变时间、载荷大小和材料性能等条件均无关。计算结果还表明 ,在薄膜变形分析的基础上 ,非蠕变条件下试样中心挠度 中心弹塑性应变函数关系和蠕变状态下试样中心挠度The relation between the center deflection δ and the center creep strain ε of a small punch specimen was analyzed using the numerical value method of finite element, it was pointed out that the relation between δ～ε was not related to the creep time, load size, and material performance. The calculation result shows that the functional relation of the center deflection-center elastic-plastic strain of the specimen under the non-creep condition was equal to the functional relation of the center deflection-center creep strain of the specimen under the creep condition based on the deflection analysis of the thin film.

关 键 词：小冲杆 蠕变试验 有限元分析 中心挠度 中心蠕变应变 蠕变时间 

分 类 号：TQ016.1[化学工程]