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Stability and necking analysis of the sample with defects
Author(s): 
Pages: 1-4
Year: Issue:  4
Journal: JOURNAL OF CHANGCHUN UNIVERSITY

Keyword:  机械缺陷几何缺陷理想试样失稳准则;
Abstract: 在实验中由于各种原因理想的试样很难得到,试样总会带有各种不同程度的缺陷.如实验前由于钳子、卡具、意外碰撞、弯曲等造成的破坏.这种缺陷在变形过程中对于颈缩的产生、发展变化及拉伸变形的稳定性会产生影响.研究讨论缺陷对于拉伸变形的颈缩、稳定性的作用,这有利于正确理解和掌握超塑性拉伸变形过程.
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