浅碟形动量轮密封罩屈曲的数值模拟
|
摘要
通过分析动量轮的结构、功能及实际工况,构建动量轮密封罩结构模型,其结构设计为1mm壁厚浅碟形密封罩。通过理论方法计算出浅碟形密封罩承受的临界强度,采用ANSYS软件分析了浅碟形动量轮密封罩壳顶有无飞轮轴支撑的特征值屈曲与非线性屈曲。结果表明:无飞轮轴支撑密封罩的非线性屈曲分析结果与理论值相近,且有飞轮轴时该临界值比无飞轮轴时大,验证了设计的1mm厚浅碟形动量轮密封罩能满足设计要求,可为同类产品的设计提供了参考。
Through analyzing the structural characteristics of the momentum wheel, function and actual working conditions, the structure model of the wheel seal cover was established. The structure was designed to be a discshaped seal cover with wall thickness of l mm. The critical strength of disc- shaped seal cover was calculated by theoretical methods. Through ANSYS software, it analyzed the characteristics of buckling and nonlinear buckling of a disc- shaped seal cover's shell roof with or without flywheel shaft. The results of the nonlinear buckling without flywheel shaft are close to the theoretical values. And the value of the model supported by flywheel shaft are greater than that lacking of flywheel shaft. It verified that the 1 mm-thick disc-shaped momentum wheel seal cover meets the design requirements, and provided the reference for the design of similar products.
Through analyzing the structural characteristics of the momentum wheel, function and actual working conditions, the structure model of the wheel seal cover was established. The structure was designed to be a discshaped seal cover with wall thickness of l mm. The critical strength of disc- shaped seal cover was calculated by theoretical methods. Through ANSYS software, it analyzed the characteristics of buckling and nonlinear buckling of a disc- shaped seal cover's shell roof with or without flywheel shaft. The results of the nonlinear buckling without flywheel shaft are close to the theoretical values. And the value of the model supported by flywheel shaft are greater than that lacking of flywheel shaft. It verified that the 1 mm-thick disc-shaped momentum wheel seal cover meets the design requirements, and provided the reference for the design of similar products.
引文
[1]姜维,闵乐宁.动量轮壳体的设计与分析[J].轴承,2004(12):4-5,36.
[2]邢丽丽,周颖.普通伸臂桁架与屈曲约束支撑型伸臂桁架最优布置方案分析[J].建筑结构学报,2015,36(12):1-10.
[3]陈金国,孙小娟,田操.卫星偏置动量轮3D模型的优化设计与有限元分析[J].黑龙江科技学院学报,2013,23(5):453-458.
[4]李红,叶全红,韩邦成,等.磁悬浮反作用飞轮密封罩结构的优化设计[J].光学精密工程,2007,15(10):1571-1576.
[5]TIMOSHENKO S P,GERE J M.Theory of Elastic Stability[M].New York:Dover Publications,1961.
[6]王春奎,刘小苹.LY-12铝高温凝聚态动力学性质研究--高温弹性模量的测定[J].高压物理学报,1991,5(1):27-34.
[7]郑津洋,董其伍,桑芝富.过程设备设计[M].北京:化学工业出版社,2001:146-147.
[8]赵丽滨,龙丽平,张建宇,等.反作用轮密封罩结构抗屈曲设计计算及试验[J].北京航空航天大学学报,2008,34(12):1464-1468.
[9]齐明,张绍卫,林言丽,等.一种飞轮密封罩优化设计方法[J].空间控制技术与应用,2013,39(2):48-52.
[10]秦锦,贾普荣,矫桂琼,等.碳/碳复合材料T型悬臂梁弯曲失效分析[J].应用力学学报,2014,31(6):865-870.
[2]邢丽丽,周颖.普通伸臂桁架与屈曲约束支撑型伸臂桁架最优布置方案分析[J].建筑结构学报,2015,36(12):1-10.
[3]陈金国,孙小娟,田操.卫星偏置动量轮3D模型的优化设计与有限元分析[J].黑龙江科技学院学报,2013,23(5):453-458.
[4]李红,叶全红,韩邦成,等.磁悬浮反作用飞轮密封罩结构的优化设计[J].光学精密工程,2007,15(10):1571-1576.
[5]TIMOSHENKO S P,GERE J M.Theory of Elastic Stability[M].New York:Dover Publications,1961.
[6]王春奎,刘小苹.LY-12铝高温凝聚态动力学性质研究--高温弹性模量的测定[J].高压物理学报,1991,5(1):27-34.
[7]郑津洋,董其伍,桑芝富.过程设备设计[M].北京:化学工业出版社,2001:146-147.
[8]赵丽滨,龙丽平,张建宇,等.反作用轮密封罩结构抗屈曲设计计算及试验[J].北京航空航天大学学报,2008,34(12):1464-1468.
[9]齐明,张绍卫,林言丽,等.一种飞轮密封罩优化设计方法[J].空间控制技术与应用,2013,39(2):48-52.
[10]秦锦,贾普荣,矫桂琼,等.碳/碳复合材料T型悬臂梁弯曲失效分析[J].应用力学学报,2014,31(6):865-870.