湖南大学学报（自然科学版）2025，Vol.52Issue(5)：28-40,13.DOI:10.16339/j.cnki.hdxbzkb.2025045
基于响应面法的多拱度铝合金节点板冲压回弹预测与补偿
Springback Prediction and Compensation of Multi-camber Aluminum Alloy Gusset Joint Plates Using Response Surface Method
摘要
Abstract
In free-form aluminum alloy single-layer latticed shells,the members rely on the gusset joints to connect.To meet these assembly requirement of the gusset joint,the joint plates need to be stamped into complex shapes with multiple cambers.However,the springback phenomenon reduces the forming accuracy and may cause difficulty in joint assembly.To improve the forming accuracy of the joint plates,it is crucial to predict and compensate for the springback.Firstly,forming experiments were conducted on 6 joint plate specimens,the residual cambers were scanned with a 3D scanner,and the springback values were calculated.Secondly,a mixed algorithm of explicit dynamic and implicit static algorithm was used for the simulation of the springback process on the joint plates.Compared with the experiment springback values,the simulated values only had a mean relative error of 4.31%.Subsequently,response surface models for springback prediction were constructed based on 1 500 numerical simulation results,and the coefficient of determination of the model was 0.988,indicating a high accuracy.Finally,based on the springback prediction response surface model,a springback compensation method for multi-camber aluminum alloy gusset joint plates was proposed and validated with 20 numerical examples.The method was used to design 20 groups of joint plates with different geometric parameters and camber combinations.The results show that the method can effectively compensate the springback of the plates.关键词
铝合金/板式节点/回弹预测/回弹补偿/响应面法Key words
aluminum alloy/gusset joint/springback prediction/springback compensation/response surface method分类
土木建筑引用本文复制引用
郭小农,李根,曾强,钟芬达..基于响应面法的多拱度铝合金节点板冲压回弹预测与补偿[J].湖南大学学报（自然科学版）,2025,52(5):28-40,13.基金项目
国家自然科学基金资助项目(51478335),National Natural Science Foundation of China(51478335) （51478335）
