摘要
分析了粉末烧结材料泊松比与屈服准则的关系 ,指出了泊松比Kuhn模型的等价假设 ,比较了几种泊松比模型的特点 ,提出了一种能反映致密过程中密度较大时泊松比增长率减缓的特点的箕舌线函数型泊松比模型。
The relationship between Poisson's ratio of sintered powder material and yield criterion was analyzed.The equivalent assumption of the Kuhn Poisson's ratio model was proposed.The characteristics of the Kuhn model were compared with that of some other kinds of the Poisson's ratio model.A new Poisson's ratio model,as called tongue shape function,was deduced to describe the tendency that the increment rate of Poisson's ratio decreases progressively when the density of sintered powder material becomes higher during densification.
出处
《金属成形工艺》
2001年第2期4-7,共4页
Metal Forming Technology
关键词
金属粉末烧结材料
塑性变形
泊松比模型
sintered metal powder material
plastic deformation
Poisson's ratio model
