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拉矫机组中材料特性对技术参数的影响
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作者 王彩元 《中国科技期刊数据库 工业A》 2021年第4期69-69,71,共2页
金属带材的矫直是利用其反弯、弹复与残留三种曲率变化的过程,要达到矫直的目的需合理设置拉矫机延伸率及拉力的数值。
关键词 矫机 弯曲变形 弹性变形 应力 应变 拉伸率拉力
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Stretch rate and deformation for pre-stretching aluminum alloy sheet 被引量:1
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作者 朱才朝 罗家元 《Journal of Central South University》 SCIE EI CAS 2012年第4期875-881,共7页
Numerical simulation combined with experimental test was carried out to analyze the pre-stretching process of the 7075 aluminum alloy sheet,from which the stress variation curves and residual stress of aluminum alloy ... Numerical simulation combined with experimental test was carried out to analyze the pre-stretching process of the 7075 aluminum alloy sheet,from which the stress variation curves and residual stress of aluminum alloy sheet in different stretch rates were obtained.The results show that the residual stress in length direction is released after unloading the stretch force,while the residual stress in width direction is released during the stretching process.The study of residual stress elimination is beneficial for optimizing stretch rate on the basis of residual stress distribution law.By comparing the variation principle of residual stress in length direction,the size range of three deformation areas and elimination percentage of residual stress were obtained.The residual stresses of clamping area and transition area are not eliminated effectively,so sawing quantity should be the sum of both the areas.The elimination rate of residual stress in even deformation area could reach 90% after choosing a proper stretch rate,which is verified by both simulation and experiment. 展开更多
关键词 residual stress stretch rate defonnation area sawing quantity
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