| 材料的塑性泊松比μp和弹塑性泊松比μep |
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| 引用本文： | 刘智,王瑞刚.材料的塑性泊松比μp和弹塑性泊松比μep[J].塑性工程学报,1999,6(2):26-29. |
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| 作者姓名： | 刘智 王瑞刚 |
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| 作者单位： | 北京联合大学应用技术学院(刘智)，中国机械工程学会(王瑞刚)，北京农学院(赵广生) |
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| 摘 要： | 本文在塑性变形体积不可压缩的条件下导出了以塑性应变εｐ定义的塑性泊松比μｐ和以弹塑性总应变εｅｐ定义的弹塑性泊松比μｅｐ的计算式，指出在小变形范围内可以看作μｐ＝０．５，而μｅｐ则总是小于０．５；当变形较大时，无论是μｐ还是μｅｐ均远小于０．５。本文提供的计算式可用于解决大变形问题
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| 关 键 词： | 泊松比 塑性变形 大变形 |
PLASTIC POISSONS RATIO p AND ELASTICPLASTIC POISSON'S RATIO epOF MATERIAL |
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| Liu Zhi.PLASTIC POISSONS RATIO p AND ELASTICPLASTIC POISSON'S RATIO epOF MATERIAL[J].Journal of Plasticity Engineering,1999,6(2):26-29. |
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| Authors: | Liu Zhi |
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| Abstract: | from the condition of incompressibility of the volume under the circumstances of plastic deformationthis paper derives plasticelastic poisson's ratio P,which is defined by the plastic ratio p which is defined by the plastie strain p and elasticplastic poisson's ratio ep which is defined by the whole elastic plastic strain ep are derived. It also points out that there is indeed p=05 within the region of small deformation,but ep will never be biger than 05, and when the deformation is larger,no matter whether it is p and ep it will be far less than 05 In this paper the counting formula is provided for solving the problem of large deformation |
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| Keywords: | poisson's ratio plastic deformation large deformation |
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