摘要
迄今有关材料应力和应变状态的分析多限于面内同性材料。然而,绝大多数板树为面内异性,因此对所有板材的塑性变形问题一味在面内同性之条件下研究未免就有不妥之处。本文在面内异性的前提下,对板料的应力和应变状态进行了分析,并且初步探讨了用液压胀形试验求得应力应变曲线的一些问题。
The stress and strain of materials have mostly been analysed in planar isotropy.But it is not always proper to analyse all sheet metal forming problems in planar isotropy sinoe most sheet metals are'nt planar isotropic. This paper analyses the stress and strain in planar isotropy,and based on which,some aspects of the stressstrain curves determined by hydraulic bulge experiment were discussed.
关键词
面内异性
屈服函数
应变强度函数
planar anisotropy
yield function
strain strength function
