摘要
结合响应面法分析与有限元模拟,研究多因子作用、多指标限制下的弯管成形,为船用弯管生产的模具配置提供技术支撑。针对某尺度的小半径弯管,基于四个设计因子,考察起皱率、减薄率及扁平度三个成形指标。利用"中心复合设计"制定试验方案,共进行25次有限元试验;得到指标响应模型,给出因子影响规律及推荐取值;获得主要限制指标及同时满足三重指标的合格区域;验证某优化点,成形指标均满足要求,且与响应面预测值吻合较好。
Response surface methodology and finite element method （FEM） are combined to study the multi-factor influenced, multi-defect constrained tube bending process so that production of marine tubes can be instructed This work aims at one tube with small bending radius, investigates the wrinkling ratio, thinning ratio and flattening ratio of formed shape based on four design factors. 25 FEM calculations are conducted using ＂Central composite design ＂for design of experiments. Response models of forming indexes are gained Factors＂ effects and preferable value are discussed Primary limit index and design regions qualified for all three indexes are achieved One optimal setting is verified and the result gained by FEM fits well with response model prediction.
出处
《船舶工程》
北大核心
2015年第6期75-79,共5页
Ship Engineering
关键词
小半径弯管
响应面法
试验设计方法
有限元模拟
成形优化
small-radius tube bending,＂ response surface,＂ design of experiments
FEM,＂ forming optimization
