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楔形模宽条料超塑性拉拔非局部摩擦分析

Mao-lin LI,Ming-fu FU,Xiao-qing YAN,Guo-tai YANG

Forging & Stamping Technology（2008）

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Abstract
研究金属材料表面微凸结构对模具与工件接触区域上的非局部摩擦效应,在楔形模宽条料超塑性拉拔加工问题中,首次采用Oden等提出的非局部摩擦定律代替经典的库仑摩擦定律,利用主应力法或工程法建立了相应问题的积微分形式的力平衡方程.在简化的情况下,采用摄动法求得所论问题的近似解,并分析了影响应力的非局部效应的相关因素.
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Key words
nonlocal friction,wide strip,superplastic drawing
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