热压罐成型框架式模具结构拓扑优化设计  

Topology optimization of frame mold for autoclave process

作　　者：岳波 许英杰[1] 徐宁鑫 张卫红[1] YUE Bo;XU Yingjie;XU Ningxin;ZHANG Weihong(School of Mechanical Engineering,Northwestern Polytechnical University,Xi'an 710072,China)

机构地区：[1]西北工业大学机电学院,西安710072

出　　处：《航空学报》2022年第3期533-545,共13页Acta Aeronautica et Astronautica Sinica

基　　金：国家自然科学基金(11872310);国家重点研发计划子课题(2017YFB1102800)。

摘　　要：框架式模具是热压罐成型复合材料壁板类构件的关键工装,框架式模具的整体刚度、温度均匀性对于复合材料构件的成型质量具有重要影响。以某壁板构件所用的框架式模具为研究对象,以提高模具整体刚度和温度均匀性为目标,采用拓扑优化方法对模具结构进行了优化设计。在此基础上,进一步开展了优化设计后模具与初始模具的性能对比,对两种模具分别进行了静刚度计算和温度场计算。结果显示与原始模具相比,优化设计后模具整体结构减重16.04%(支撑结构减重33.6%),变形减小了27%,升温过程中模具型面最大温差减小了29%,验证了该优化设计方法的有效性。此外,加工了优化后的缩比尺寸模具,开展了热压罐加热过程中的模具型面温度测量,测量结果显示优化后模具具有良好的温度均匀性,并且通过实验验证了仿真计算结果的有效性。The frame mold is the key tool for autoclave processing of composite panel structures.The stiffness and temperature uniformity of the mold have important influences on processing quality of composite structures.In this paper,to enhance the mold stiffness and temperature uniformity of the mold,the structure of a frame mold for autoclave processing of the composite panel is optimized using the topology optimization method.The performance of the initial and optimized molds are compared in terms of static deformation and temperature field of the mold.Results show that compared with that of the initial mold,the overall structure weight of the optimized mold is 16.04%lower(the weight of supporting structure is 33.6%lower),the static deformation is 27%lower,and the maximum temperature difference during the heating process is 29%lower,which demonstrates the validity of the optimized design method.The scaled sample of the optimized mold is then manufactured.The test results of the temperature distribution on the mold face show that the optimized mold has an excellent temperature uniformity.Validity of the simulation results is also verified experimentally.

关 键 词：热压罐成型 框架式模具 拓扑优化 静刚度 温度场 

分 类 号：V261.97[航空宇航科学与技术—航空宇航制造工程]