摘要
对某Φ1000mm金属壳体螺栓连接结构建立三维有限元模型,基于AWE平台首先分析了无止口结构设计对螺栓的受力影响,进而以计算机实验设计方法为基础,采用目标驱动优化设计,对有止口结构进行优化设计。计算结果表明,在螺栓安全系数确定的前提下,优化后的螺栓连接结构变形协调,螺栓部位应力分布合理,相比初始结构,螺栓Mises应力减少15.6%,部件质量减少0.8%,止口内径和宽度对螺栓的受力影响较大。
Three-dimensional finite element model is used to analyzeΦ1000mm mental case with bolted connection.Based on the AWE,the mechanical properties of the bolt without fixing are analyzed.Based on the CDOE,the fixing structure optimization design is analyzed through GDO.The results reveal that the optimized fixing structure is reasonable under the certain safety factor of bolt,the Mises stress of bolt is decreased by 15.6%and the weight of structure is decreased by 0.8%compared with the initial structure.The radius and width of the fixing are mainly influenced on stress of the bolt.
作者
杨乐
王立强
Yang Le;Wang Li-qiang(National Key Lab of Combustion,Flow and Thermo-structure,The Xi'an Institute of Aerospace Power Technology,Xi’an,710025)
出处
《导弹与航天运载技术》
CSCD
北大核心
2020年第2期49-53,共5页
Missiles and Space Vehicles
关键词
螺栓连接
止口结构
优化设计
bolted connection
fixing structure
optimization design
