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首页> 外文期刊>Journal of Materials Engineering and Performance >Finite Element Analysis of Plastic Deformation During Impression Creep
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Finite Element Analysis of Plastic Deformation During Impression Creep

机译：压痕蠕变过程中塑性变形的有限元分析

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Finite element (FE) analysis of plastic deformation associated with impression creep deformation of 316LN stainless steel was carried out. An axisymmetric FE model of 10 x 10 x 10 mm specimen with 1-mm-diameter rigid cylindrical flat punch was developed. FE simulation of impression creep deformation was performed by assuming elastic-plastic-power-law creep deformation behavior. Evolution of the stress with time under the punch during elastic, plastic, and creep processes was analyzed. The onset of plastic deformation was found to occur at a nominal stress about 1.12 times the yield stress of the material. The size of the developed plastic zone was predicted to be about three times the radius of the punch. The material flow behavior and the pile-up on specimen surface have been modeled.
机译：进行了与316LN不锈钢的压痕蠕变变形相关的塑性变形的有限元（FE）分析。建立了直径为1mm的刚性圆柱平冲头的10 x 10 x 10 mm试样的轴对称有限元模型。压痕蠕变变形的有限元模拟是通过假设弹塑性幂律蠕变变形行为进行的。分析了弹性，塑性和蠕变过程中冲头下应力随时间的变化。发现塑性变形的开始发生在标称应力约为材料屈服应力的1.12倍时。预计发达的塑料区的大小约为冲头半径的三倍。已经对材料的流动行为和试样表面的堆积进行了建模。

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