| 淬火铝合金厚板预拉伸变形区域仿真与分析 |
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| 引用本文： | 廖凯,吴运新,龚海.淬火铝合金厚板预拉伸变形区域仿真与分析[J].材料热处理学报,2009,30(2). |
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| 作者姓名： | 廖凯 吴运新 龚海 |
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| 作者单位： | 1. 中南大学机电工程学院,湖南,长沙,410083;桂林电子科技大学,广西,桂林,541003
2. 中南大学机电工程学院,湖南,长沙,410083 |
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| 基金项目： | 国家重点基础研究发展计划(2005CB623708) |
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| 摘 要： | 铝合金预拉伸厚板变形区域分为夹持区、过渡区和均匀区三个部分。在模拟厚板预拉伸变形过程基础上,分析了各变形区域变形机理和应力分布规律。夹持区变形不充分,导致残余应力不足60%,且内部应力分布复杂。过渡区残余应力沿拉伸方向分布不均匀,对不同尺寸板厚在不同拉伸工艺下的过渡区进行分析说明,过渡区范围与板厚度有关,其范围约为板厚的60%～70%。最后分析了均匀区应力演变规律,探讨了不同拉伸量和拉伸速度对不同尺寸厚板拉伸效果的影响,认为拉伸量2.0%～2.5%可满足较好的工艺要求。
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| 关 键 词： | 预拉伸 夹持区 过渡区 均匀区 |
Simulation of deformed area for pre-stretching aluminum alloy thick plates |
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| LIAO Kai,WU Yun-xin,GONG Hai.Simulation of deformed area for pre-stretching aluminum alloy thick plates[J].Transactions of Materials and Heat Treatment,2009,30(2). |
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| Authors: | LIAO Kai WU Yun-xin GONG Hai |
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| Affiliation: | 1.School of Mechanical and Electronic Engineering;Central South University;Changsha 410083;China;2.Guilin Universiry of Electronic Technology;Guilin 541004;China |
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| Abstract: | Deformation areas of pre-stretching aluminum alloy thick-plate are divided into three parts: clamping region,transition region and uniform deformation region along the stretch(rolling) direction.Based on simulation of pre-stretching process,the mechanism of deformation and stress distribution in the plate are analyzed.In clamping region,due to insufficient deformation,the reduction ratio of residual stresses don't reach to 60% and inner strers is complication.The residual stress of the transition region is ... |
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| Keywords: | pre-stretching quenching clamping region transition region uniform region |
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