摘要
采用仿真与实验相结合的方法,对超薄壁波形环橡皮成形不均匀变形进行分析。解决了该成形过程中有限元建模关键技术,如几何模型的建立、材料模型的建立以及加载边界条件处理等,建立了符合实际又兼顾计算精度的超薄壁波形环橡皮成形有限元仿真模型。基于所建立的仿真模型,分析了该成形过程中的不均匀变形特征。结果表明:随橡皮成形过程的进行,应力和应变先急剧增大,然后平稳缓慢增加,最后基本保持不变;在波形环橡皮成形过程中,应力和应变主要集中在波形的圆弧处,最大值在波谷处;橡皮成形波形环沿环件径向的壁厚增厚率和减薄率小于1%。
The non-uniform deformation of rubber forming for corrugated ring with ultra-thin wall was analyzed by means of simulation and experiment. The key techniques of finite element modeling of the forming process were solved, such as the establishment of geometric model, the establishment of material model and the processing of loading boundary conditions, etc., and the finite element simulation model of rubber forming for corrugated ring with ultra-thin wall was established which was both practical and accurate. Based on the established simulation model, the non-uniform deformation characteristics in the forming process were analyzed. The results show that the stress and strain increase sharply at first, then increase steadily and slowly, and keep constant at last. During the rubber forming process of corrugated ring, the stress and strain are mainly concentrated at the circular arc of the corrugated ring, and the maximum value is at the trough. The thickening rate and thinning rate of rubber formed corrugated ring are less than 1% along the radial direction of ring.
作者
魏清华
赵刚要
张冉阳
陶茂志
余贤文
郭正华
WEI Qing-hua;ZHAO Gang-yao;ZHANG Ran-yang;TAO Mao-zhi;YU Xian-wen;GUO Zheng-hua(Jiangxi Key Laboratory of Forming and Joining Technology for Aerospace Components,Nanchang Hangkong University,Nanchang 330063,China)
出处
《塑性工程学报》
CAS
CSCD
北大核心
2022年第2期55-61,共7页
Journal of Plasticity Engineering
基金
国家自然科学基金资助项目(52165051,51665041)
江西省重点研发计划项目(20202BBEL53010)
江西省自然科学基金青年科学基金重点资助项目(20192ACBL21049)
江西省重大科技研发专项(20194ABC28001)
江西省研究生创新专项资金资助项目(YC2020-S536)
教育厅青年科学基金资助项目(GJJ190530)。
关键词
波形环
仿真分析
双相不锈钢
不均匀变形
橡皮成形
corrugated ring
simulation analysis
dual-phase stainless steel
non-uniform deformation
rubber forming
