摘要
本文对普通平板间镦粗圆柱体进行了力学分析。根据镦粗体高径比H/D的不同,提出了两个新理论:H/D>1,刚塑性力学模型的拉应力理论;H/D<1,静水应力力学模型的剪应力理论。新理论能正确描述其内在应力的近似分布规律,纠正了塑性力学在该方面的错误论点和不完善的阐述,有理论和工程应用价值。
Mechanical analysis is sonduted for upsetting a cylinder between flat dies in this paper. Two new theories are proposed based on the ratio of height to diameter H/D of the cylinder, which are tension stress theory of rigid-plastic model for H/D>1 and shear stress theory of hydrostatic stress model for H/D<1, The theories may property describ the approximate distribution law of the internal stresses and correct the wrang viewpoint and uncomplete statement on plastic mechanics
出处
《大型铸锻件》
1992年第1期5-9,共5页
Heavy Casting and Forging
关键词
圆柱体
镦粗
拉应力
剪应力
Cylinder
Upset
Rigid-plastic model on mechhanics
Tension stress
Hydrostatic stress model
Shear stress
