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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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球形压痕法评价材料屈服强度和应变硬化指数的有限元分析
, PP. 189-194
Keywords: 有限元分析,(FEA),球形压痕,屈服强度,应变硬化指数,无量纲函数
Abstract:
采用量纲分析法,建立了直径1mm球形压头的无量纲函数.通过此无量纲函数和有限元计算,可推算金属材料的屈服强度和应变硬化指数.通过模拟,得到了屈服应变从0.00769到0.04范围的材料常数的拟合函数,并利用此拟合函数得到了屈服强度和应变硬化指数.通过模拟验证,此方法提高了计算精度并扩大了材料的计算范围.所获得的屈服强度平均误差是1.6%,应变硬化指数的平均误差12.6%.
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