| 基于变压边力控制的非轴对称拉深成形数值模拟与优化 |
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| 引用本文： | 李奇涵,李明哲,毛茂.基于变压边力控制的非轴对称拉深成形数值模拟与优化[J].中国机械工程,2006(Z1). |
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| 作者姓名： | 李奇涵 李明哲 毛茂 |
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| 作者单位： | 长春工业大学 吉林大学 长春工业大学 长春 130012 130025 |
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| 摘 要： | 在给定合理毛坯形状、拉延筋与凹模渐变圆角条件下,分别在定常、递减、峰形、谷形压边力加载模式下,对汽车车灯反射镜拉深进行了数值模拟。结果表明:谷形压边力加载模式可使工件减薄率小于13.45%,适合该拉深工序;利用数值模拟结果和神经网络方法优化获得最优压边力加载曲线,该曲线可用于拉深中压边力的准确控制。
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| 关 键 词： | 拉深成形 数值模拟 变压边力 神经网络 |
Optimization & Numerical Simulation of Typical Pieces with Non-axisymmetrical Shape Based on Controlling VBHF |
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| Li Qihan , Li Mingzhe Mao Mao . Changchun University of Technology,Changchun, . Jilin University,Changchun.Optimization & Numerical Simulation of Typical Pieces with Non-axisymmetrical Shape Based on Controlling VBHF[J].China Mechanical Engineering,2006(Z1). |
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| Authors: | Li Qihan Li Mingzhe Mao Mao Changchun University of Technology Changchun Jilin University Changchun |
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| Affiliation: | Li Qihan~ 1,2 Li Mingzhe~ 2 Mao Mao~ 1 1. Changchun University of Technology,Changchun,130012 2. Jilin University,Changchun,130025 |
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| Abstract: | Given with reasonable shape of blank,draw beads and gradual fillet of die, numerical simulation of deep drawing for automobile headlight reflector was carried out with constant-type,reduce-type, crest-type and valley-type blank holder force (BHF).The result shows that valley-type BHF is fit for this working procedure and the thinning rate of blank is less than 13.45%, moreover, the best optimum load curve of BHF was obtained by using simulation result and neural-net method.It is helpful for accurate control of BHF. |
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| Keywords: | deep drawing numerical simulation variable blank holder force(VBHF) neural net |
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