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Author:

王旭明 (王旭明.) | 安彤 (安彤.) | 秦飞 (秦飞.) (Scholars:秦飞)

Abstract:

无铅焊锡材料的Johnson-Cook动态本构模型在应变率较高(1200s-1或以上)且应变超过某个临界值时与实验曲线存在较大误差。本文考虑冲击过程中无铅焊锡材料试件中的损伤影响,根据实验数据确定了损伤演化参数,对原模型进行了修正,给出了Sn3.0Ag0.5Cu和Sn3.5Ag2种无铅焊锡材料考虑损伤效应的率相关本构模型。结果表明,修正后的模型与实验结果吻合较好。

Keyword:

损伤 无铅焊料 Johnson-Cook模型 本构关系

Author Community:

  • [ 1 ] 北京工业大学机械工程与应用电子技术学院

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Source :

Year: 2011

Language: Chinese

Cited Count:

WoS CC Cited Count: 0

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 6

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