锻压技术

基于响应面法的柱形壳内高压胀形工艺优化

英文标题：Optimization on internal highpressure bulging process for cylindrical shell based on response surface method

作者：孙志莹施正贤申明廷

分类号：TG306

出版年,卷(期):页码：2023,48(10):95-101

摘要：

针对柱形壳在制造过程中的厚度均匀性和成形性能差等问题，提出采用橡胶内高压胀形工艺进行柱形壳的成形，并通过优化肩部传力区域的工艺参数来提高柱形壳的成形性能。基于响应面法中的BoxBehnken Design进行试验方案的设计，建立并优化了以模具结构中肩部传力区域的内圆角半径、外圆角半径、斜边角度和摩擦因数为设计变量，以最大减薄率为响应值的响应面模型，并通过对响应面模型进行方差分析和相关性分析，确定了柱形壳内高压胀形的最佳工艺参数组合为：内圆角半径为9.89 mm，外圆角半径为1 mm，斜边角度为10.13°，摩擦因数为0.104。采用最佳的工艺参数进行柱形壳内高压胀形模拟分析和试验，验证了响应面模型优化的可靠性和模拟分析的准确性。

For the problems of non-uniform thickness distribution and poor formability of cylindrical shells in the manufacturing process, the rubber internal high-pressure bulging process was proposed to form cylindrical shells, and the formability of cylindrical shell was improved by optimizing the process parameters of shoulder force transmission area. Then, the test scheme was designed based on Box Behnken Design in the response surface method, and taking the inner fillet radius, outer fillet radius, bevel angle and friction factor of the shoulder force transmission area in the die structure as the design variables and the maximum thinning rate as the response value, the response surface model was established and optimized. Furthermore, the variance analysis and correlation analysis were conducted by the response surface model, and the optimal combination of process parameters for the internal high-pressure bulging of cylindrical shell was determined as the inner fillet radius of 9.89 mm,the outer fillet radius of 1 mm, the bevel angle of 10.13° and the friction factor of 0.104. Thus, the simulation analysis and test of internal high-pressure bulging in the cylindrical shell were carried out with the optimal process parameters to verify the reliability of the response surface model optimization and the accuracy of the simulation analysis.

基金项目：

国家自然科学基金资助项目(52205372)；张家港市产学研预研资金项目(ZKCXY2131)；江苏省研究生科研与实践创新计划项目(SJCX22_1924)

孙志莹（1984-），女，博士，讲师 E-mail：szy611@just.edu.cn

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