| 超塑胀形最佳加压规律及其控制 |
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| 引用本文： | 陶树学,崔建忠,马龙翔.超塑胀形最佳加压规律及其控制[J].东北大学学报(自然科学版),1989(6). |
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| 作者姓名： | 陶树学 崔建忠 马龙翔 |
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| 作者单位： | 东北工学院有色金属压力加工教研室
(陶树学，崔建忠)，东北工学院有色金属压力加工教研室(马龙翔) |
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| 摘 要： | 本文从一些基本的物理假设及塑性力学基本理论出发,运用 Backofen 超塑性本构方程,推导了典型超塑板材型腔胀型全过程的最佳加压规律。根据对变形假设的修正,对自由胀形、贴模及充填阶段的最佳加压规律曲线进行合理的连接。用TP801B单板机及其他硬件组成的控制系统,实现了板材型腔吹塑成型全过程平滑、全自动控制。
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| 关 键 词： | 超塑胀型 最佳应变速率 最佳加压规律 本构方程 |
Optimal Time--Dependent Forming Pressure in Superplastic Bulging Process and Its Control |
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| Tao Shuxue,Cui Jianzhong,Ma Longxiang.Optimal Time--Dependent Forming Pressure in Superplastic Bulging Process and Its Control[J].Journal of Northeastern University(Natural Science),1989(6). |
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| Authors: | Tao Shuxue Cui Jianzhong Ma Longxiang |
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| Institution: | Tao Shuxue;Cui Jianzhong;Ma Longxiang |
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| Abstract: | Based on some physical assumptions and the fundamental theory of plasti-city, Backofen's constitutive equation was used to derive the optimal time-dependent forming pressure in a typical superplastic sheet bulging processwithin a cavity. With deformation models modified appropriately, the pressurevs. time curves in three subsequent phases,i.e.,free bulging,closing up to innersurface of the cavity and corner filling, could thus be reasonably and smo-othly joined as a continuous relationship. To justify the theoretical consider-ation, a control system composed of a TP801B single--board computer andother hardwares was set up, and a fully automatic and smooth control wasattained with the system to show the whole process of blow moulding withina cavity. |
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| Keywords: | superplastic bulging optimal strain rate optimal time-dependent forming pressure constitutive equation |
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