摘要
利用UG软件建立三维模型，同时运用ANSYS有限元分析软件，模拟了脆性材料聚苯乙烯（PS）哑铃形拉伸试样在拉伸载荷下的应力分布，分析了试样过渡段不同几何结构对应力集中的影响。有限元分析结果表明，应力的最大值出现在过渡段圆弧1～3mm的区域。并通过非线性拟合获得了几何参数与应力集中系数的关系式，分析结果可应用于脆性材料PS制品设计计算。
UG software was applied to formulate a three-dimensional model, based on which the tensile stress distribution in a polystyrene dumb-bell specimen was simulated using ANSYS finite element software. The factors causing stress concentration were analyzed in the different transitionary structures. The finite element analysis indicated that the maximal tensile stress occurred in domain of the transitionary circular 1-3 mm. The relationship between geometric parameter and stress concentration factor was formulated data fitting.
出处
《中国塑料》
CAS
CSCD
北大核心
2009年第9期80-84,共5页
China Plastics
关键词
聚苯乙烯
拉伸试样
过渡段结构
应力集中
模拟
polystyrene
tensile specimen
transitionary structure
stress concentration
simulation
