厚度分布对球形金属贮箱膜片翻转的影响  

Influence of Thickness Distribution on Flip of Spherical Metal Tank

作　　者：程桐 黄放[1] 周晓兰 刘忠 CHENG Tong;HUANG Fang;ZHOU Xiao-lan;LIU Zhong(College of Mechanical Engineering,Guizhou University,Guizhou Guiyang550000,China;Guizhou Aerospace Chaoyang Technology Co.,Ltd,Guizhou Zunyi563000,China)

机构地区：[1]贵州大学机械工程学院,贵州贵阳550000 [2]贵州航天朝阳科技有限责任公司,贵州遵义563000

出　　处：《机械设计与制造》2020年第1期153-155,160,共4页Machinery Design & Manufacture

基　　金：面向智能装备领域的“技术众筹”研究生创新基地（贵大研CXJD[2015]003）

摘　　要：厚度分布是影响膜片顺利翻转较大的因素,为获取两种方案厚度分布的膜片在翻转过程的形变、应力、应力分布及质心的横移量,通过对推进剂贮箱金属膜片采用UG建模,结合非线性有限元分析软件Patran模拟分析膜片的大变形非线性特性,经过对比从而寻找出具有较优翻转特性的膜片厚度分布区间为0.9~1.3mm,且第二种方案应力分布更为均匀;结合实验验证仿真真实性,通过实验测得起翻压差为0.14MPa,且压力达到0.45MPa时液体可以完全排出;推进剂最大流量达到工作要求,且翻转时的最大偏心量符合设计要求。Thickness distribution is the key point to effect diaphragm to turn over smoothly,to get shape change,stress,stress distribution and transverse shift of centroid,for both thickness distribution diaphragms in turn process,utilize UG modeling on metal diaphragm of propellant tank,with dynamic relaxation method analysis software Patran to analyze diaphragm’s nonlinear characteristics of big shape change,after comparing then find out the better thickness distribution range is 0.9 ~1.3 mm,which diaphragm has a better turn character,and the second solution’s stress distribution is more even;with the simulation reality of experiment verification,experiment measures differential pressure is 0.14 MPa,and the liquid will discharge when the pressure achieves 0.45 MPa;propellant max flow meets work requirement,and the max eccentricity meets design requirement in turn process.

关 键 词：金属膜片翻转 厚度分布 有限元分析 非线性 

分 类 号：TH16[机械工程—机械制造及自动化] V434.23[航空宇航科学与技术—航空宇航推进理论与工程]