超塑性成型工艺气压比例控制算法的比较  

Comparison of ratio control algorithms for pressure in superplastic forming process

作　　者：杨建[1] 

机构地区：[1]上海飞机设计研究院强度设计研究部,上海201210

出　　处：《江苏科技信息》2017年第12期41-44,共4页Jiangsu Science and Technology Information

摘　　要：超塑性成型工艺采用气压控制算法得到成形过程中所需的气压曲线,所采用的气压控制算法直接影响气压加载的控制方式和最终零件的成形质量。文章分析了相关的气压控制算法,对常用的5种气压比例控制算法做了对比分析,根据分析结果给出了推荐的算法,为数值模拟和实验采用气压控制算法提供了依据。The pressure cycle in the forming process of superplastic forming is usually obtained by pressure control algorithm, and the used algorithm has direct influence on the applied control strategy and the forming quality of final part. In this paper, the related pressure control algorithms are summarized, and 5 of the most used ratio control algorithms are compared and analyzed. Besides, the recommended algorithm is given, providing the base of choosing pressure control algorithms for numerical simulations and tests of superplastic forming.

关 键 词：超塑性成型 气压控制算法 比例控制 本构关系 

分 类 号：TG146.21[一般工业技术—材料科学与工程]