基于CAE的梯度增强刚性结构超塑成形/扩散连接工艺研究  

Research on superplastic forming/diffusion bonding process of gradient reinforced rigid structure based on CAE

作　　者：王珏[1] 王月林[1] 张晓巍[1] 何晓健 谢洪志[1] 付和国 WANG Jue;WANG Yue-lin;ZHANG Xiao-wei;HE Xiao-jian;XIE Hong-zhi;FU He-guo(Shenyang Aircraft Industry Group Co.,Ltd.,Shenyang 110850,China)

机构地区：[1]沈阳飞机工业(集团)有限公司,辽宁沈阳110850

出　　处：《塑性工程学报》2022年第12期41-46,共6页Journal of Plasticity Engineering

基　　金：民用飞机专项科研项目(MJ-2018-G-45)。

摘　　要：以一种钛合金多层变厚度梯度增强刚性结构为研究对象,采用超塑成形/扩散连接技术进行了整体化结构制备。采用CAE技术对梯度增强刚性结构进行了成形有限元模拟仿真分析,通过有限元仿真结果中零件厚度变化、贴模度、是否产生成形缺陷等指标评判结构设计的合理性,对成形质量进行了评估,对结构及成形工艺进行了优化,并对整体化梯度增强刚性结构进行了成形试验验证。结果表明,采用合理的设计结构,可以实现基于超塑成形/扩散连接工艺的梯度增强刚性结构零件制造,零件成形质量良好,厚度分布满足设计和使用需求,成形试验结果与有限元分析结果一致。A gradient reinforced rigid structure of titanium alloy with multilayer variable thickness was selected as the research object,the integral structure was fabricated by superplastic forming/diffusion bonding technology.The forming finite element simulation analysis of gradient reinforced rigid structure was carried out by CAE technology,the rationality of the structure design was evaluated by the indexes such as thickness change of parts,sticking degree and whether there are forming defects from the finite element simulation results,the forming quality was evaluated,and the structure and forming process were optimized,the forming tests were used to verify the integral gradient reinforced rigid structure.The results show that with a reasonable design structure,the fabrication of gradient reinforced rigid structure parts based on superplastic forming/diffusion bonding process can be realized,the forming quality of the parts is good,and the thickness distribution meets the design and use requirements,the forming test results are in agreement with the finite element analysis results.

关 键 词：超塑成形/扩散连接 梯度增强刚性结构 结构设计 有限元仿真 

分 类 号：V262.2[航空宇航科学与技术—航空宇航制造工程]