| 对向差压超塑胀形m值的计算公式和测量方法 |
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| 引用本文： | 宋玉泉,寇淑清,何忠保.对向差压超塑胀形m值的计算公式和测量方法[J].吉林大学学报(工学版),1993(2). |
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| 作者姓名： | 宋玉泉 寇淑清 何忠保 |
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| 作者单位： | 吉林工业大学金属材料工程系
(宋玉泉，寇淑清)，吉林工业大学金属材料工程系(何忠保) |
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| 基金项目： | 国家自然科学基金资助项目 |
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| 摘 要： | 本文给出在背压作用下超塑自由胀形m_H·m_V·m_P的计算公式和测量方法,为研究双拉一压应力状态以及在此应力状态下不同加载路径对m值的影响提供了必要的研究手段。从ZnAl_4Cu在不同背压下胀形实验结果可见,增大背压,可以显著提高胀形速度。
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| 关 键 词： | 超塑性 自由胀形 应变速率敏感性指数 |
Formulae and Method to Determine m-Value of Superplastic Bulge with Back Pressure |
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| Song Yuquan,Kou Shuching,He Zhongbao.Formulae and Method to Determine m-Value of Superplastic Bulge with Back Pressure[J].Journal of Jilin University:Eng and Technol Ed,1993(2). |
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| Authors: | Song Yuquan Kou Shuching He Zhongbao |
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| Abstract: | In this paper, several formulae and method to determine mH·mv and mp of su-perpl astic iree bulge with back pressure are given. The concerned research is necessary and beneficial to determine the m-value in condition of bitension - unipression stress state and different loading ways with this stress state. According to the experiment of bulging ZnAl4Cu sheet, the bulging rate can be increased obviously with increase of back pressure. |
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| Keywords: | superplasty free bulge strain speed rate sensitivity index |
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