硬聚氯乙烯三通管挤胀成型的有限元模拟及优化  

Finite element modeling (FEM) simulation and optimization of the bulge forming process for unplasticized polyvinyl chloride (UPVC) branch pipes

作　　者：何亚东[1] 信春玲[1] 李松[1] 朱复华[1] 李庆春[1] 

机构地区：[1]北京化工大学机电工程学院,北京100029

出　　处：《北京化工大学学报（自然科学版）》2008年第1期88-92,共5页Journal of Beijing University of Chemical Technology(Natural Science Edition)

基　　金：北京市科技新星计划(2005B16)

摘　　要：采用Ansys通用分析软件对硬聚氯乙烯(UPVC)三通管的挤胀成型过程进行了有限元模拟和优化。通过模拟获得了三通管挤胀成型过程中的主要失效形式。采用单步循环法模拟了不同过渡圆角情况下三通管的成型过程,确定了合理的设计域,在此基础上分别采用子问题逼近法和一阶优化法获得了对于不同过渡圆角情况下三通管优化的设计参数组合。在模拟和优化的基础上,利用自行设计的实验台成功地实现了UPVC三通管的挤胀成型。实验和模拟研究结果表明,挤胀成型方法对于一些特定类型制品的成型是可行的。Ansys has been adopted to simulate and optimize the bulge forming process in unplasticized polyvinyl chloride （UPVC） branch pipes. Simulations of the common failure modes in UPVC branch forming have been described. A single step circulating procedure has been used to simulate the branch pipe formation process at different transition radii and a rational domain of design parameters has been derived. A sub-problem approach and one order optimization were employed to achieve the optimized combination of design parameters for branch pipes with different transition radii. Based on the FEM simulation results, a series of UPVC branch pipes were prepared successfully in. a custom-built bulge forming test-bed. FEM simulation and experimental results demonstrated the feasibility of using bulge forming technology in polymer processing.

关 键 词：挤胀成型 三通 塑料 有限元模拟 优化 

分 类 号：TQ320.66[化学工程—合成树脂塑料工业]