材料科学
可塑性
断裂(地质)
合金
压力(语言学)
塑性理论
冶金
静水应力
铝
结构工程
复合材料
有限元法
工程类
语言学
哲学
作者
Xiaosheng Gao,Tingting Zhang,Matthew Hayden,Charles P. Roe
标识
DOI:10.1016/j.ijplas.2009.03.006
摘要
The experimental and numerical work presented in this paper reveals that stress state has strong effects on both the plastic response and the ductile fracture behavior of an aluminum 5083 alloy. As a result, the hydrostatic stress and the third invariant of the stress deviator (which is related to the Lode angle) need to be incorporated in the material modeling. These findings challenge the classical J2 plasticity theory and provide a blueprint for the establishment of the stress state dependent plasticity and ductile fracture models for aluminum structural reliability assessments. Further investigations are planned to advance, calibrate and validate the new plasticity and ductile fracture models.
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