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运用刚粘塑性有限元法，对控制超塑性充模胀形过程的计算机仿真技术研究包括：本构关系确定，接触摩擦约束处理，载荷控制算法及其优化，数据采集实时处理，计算机自动控制系统研制。基于刚粘塑性有限元法的最大应变速率恒定法可将压力加载过程控制在最佳状态（优化的Ｐ－Ｔ曲线）；改善了钣料胀形轮廓的厚度分布状况。本文的研究解决了控制超塑性充模胀形过程中的主要问题：数据形成、采集、处理、传输、控制；对变化的压力加载曲线能实现计算机可视化实时控制；所预示的胀形件壁厚变薄趋势与实验结果吻合；缩短胀形时间；实现了一次胀形成功的目的。
Using rigid viscoplastic finite element method, the research of computer simulation technology for controlling the bulging process of superplastic filling includes: constitutive relation determination, contact friction constraint processing, load control algorithm and optimization, data acquisition real-time processing, computer automatic control system Development. The maximum strain rate constant method based on the rigid visco-plastic finite element method can control the pressure loading process in the optimum state (optimized P-T curve) and improve the thickness distribution of the sheet metal bulge profile. The research of this paper solves the main problems in the process of controlling superplastic filling inflation: the data formation, the collection, the processing, the transmission and the control; the variable pressure loading curve can realize the computer visual real-time control; the predicted bulging wall thickness Thinning trend consistent with the experimental results; shorter bulging time; to achieve a successful bulging shape purposes.