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力学与实践 ›› 2004, Vol. 26 ›› Issue (3): 0-0.doi: 10.6052/1000-0992-2003-336

• 应用研究 •    

塑性理论在桩端盖机设计中的应用

何芝仙 戴华岳   

  1. 安徽工程科技学院 机械工程系,安徽,芜湖 241000 芜湖中亚汽车配件公司
  • 收稿日期:2003-08-08 修回日期:1900-01-01 出版日期:2004-06-10 发布日期:2004-06-10

THEORY OF PLASTICITY AND ITS APPLICATION TO THE DESIGN OF A STAKE-FLANGE MACHINE

zhixian He   

  • Received:2003-08-08 Revised:1900-01-01 Online:2004-06-10 Published:2004-06-10

摘要: 桩端盖机设计和生产必须解决塑性极限弯矩、配套电动机功率、工件下料 尺寸等计算问题. 把桩端盖机的工件加工过程视为一个塑性折弯过程,根据问题的特点, 提出基于Tresca屈服准则的一种简化计算方法,解决了工件在塑性折弯过程中的受力分析、 应力和变形分析等问题,得到相应的数学表达式. 最后结合某厂生产实际给出了一个计算实 例,为桩端盖机设计提供了理论依据.

关键词: Tresca屈服准则,理想弹塑性材料, 塑性极限弯矩,平面应力,塑性弯曲变形, deformation

Abstract: This paper discusses the calculation of plastic limit of bending moment of a workpiece, the determination of motor power matching a stake-flange machine and the choice of geometric shape and dimension of workpiece sections in the process of the machine design. Plasticity theory is applied to solve these problems and a new simplified method based on Tresca yielding's law is presented according to the features of the problems in order to solve the problems mentioned above. The plastic stress and strain distribution of the workpiece and the respective mathematical formulas are obtained. A calculating example from a factory is given.

Key words: Tresca yielding's law, perfect elastic-plastic material,, plastic limit of bending moment, planar stress problem, plastic bending, deformation