304不锈钢冷轧带钢振动时效处理数值模拟

doi:10.13228/j.boyuan.issn0449-749x.20170303

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摘要降低和均化冷轧带钢中残余应力是防止板形缺陷追求的重要目标。通过弹塑性有限元数值模拟，得到了具有残余应力的冷轧带钢，对其添加振动时效工艺进行数值模拟，获得了振动各个参数对带钢中残余应力的改善规律。研究结果表明，振动时效工艺对带钢残余应力有显著的减少与均化作用；激振力选取原则是动应力与初始残余应力之和达到材料的屈服极限且小于材料的抗拉极限；激振频率选取接近于固有频率；激振时间的选择取可以根据振动过程中激振力产生的动应力与带钢残余应力之和开始小于屈服极限的时间确定。

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	张立刚
	霍广贺
	肖宏
	谢红飙
	何咨毅

关键词 ：关键词：冷轧板带, 残余应力, 振动时效, 数值模拟

Abstract：Reducing and homogenizing the residual stress in cold-rolled strip is an important goal to prevent plate-shaped defects. Numerical simulated by elastic-plastic finite element method，the cold rolled strip with residual stress was obtained，and the numerical simulation of the aging process was carried out，the improvement of the residual stress in the strip was obtained by the parameters of vibration. The results show that the vibration stress relief process has a significant reduction and homogenization effect on the residual stress of strip. The principle of exciting force selection is the sum of the dynamic stress and the initial residual stress to reach the yield limit of the material and less than the tensile limit of the material. The excitation frequency is chosen to be close to the natural frequency. The excitation time can be determined based on the sum of the dynamic stress generated by the exciting force during the vibration process and the residual stress of the strip begins to be less than the yield limit.

Key words： Key words: cold rolled strip residual stress vibratory stress relief numerical simulation

收稿日期: 2017-06-13 出版日期: 2018-02-05

引用本文:

张立刚，霍广贺，肖宏，谢红飙，何咨毅. 304不锈钢冷轧带钢振动时效处理数值模拟[J]. , 2018, 53(1): 59-64. ZHANG Li-gang，HUO Guang-he，XIAO Hong，XIE Hong-biao，HE Zi-yi. Numerical simulation of vibration stress relief treatment of 304 stainless steel cold rolled strip. Iron and Steel, 2018, 53(1): 59-64.

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http://www.chinamet.cn/Jweb_gt/CN/10.13228/j.boyuan.issn0449-749x.20170303 或 http://www.chinamet.cn/Jweb_gt/CN/Y2018/V53/I1/59

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