摘要
运载火箭风载荷关系到箭体结构设计、运载能力和成本等方面,因此准确分析和预示气动载荷有着非常重要的意义。基于计算流体力学(CFD)与结构动力学构建运载火箭竖立状态数值风洞模型,从而对火箭风载荷与响应进行流固耦合(FSI)分析。分析结果表明该方法能充分考虑箭体弹性振动与空气流场耦合效应,本文分析结果与试验结果在规律性方面上具有较好的一致性。
Wind loads are related to the structural design, carrying capacity and cost of launch vehicle, so it is very important to forecast the wind loads of launch vehicle. In the paper, the fluid-structure interaction （FSI） analysis is executed by using the structural dynamics and the computational fluid dynamics （CFD） technology, and the numerical wind atone1 of launch vehicle can be built based on the FSI method, so that the wind loads and responses of launch vehicle can be researched. The results show that the influence of launcher on structural responses of launch vehicle has been taken into account. There are some difference between of wind tunnel and FSI method, but the results in general are relatively consistent.
作者
曹文斌
沈林
郭其威
CAO Wenbin;SHEN Lin;GUO Qiwei(Aerospace System Engineering Shanghai, Shanghai 201109, China)
出处
《强度与环境》
2018年第3期7-14,共8页
Structure & Environment Engineering
基金
载人航天预研项目(010101)
关键词
运载火箭
风载荷
流固耦合
CFD
结构动力学
风洞试验
launch vehicle
wind loads
fluid-structure interaction （FSI）
computational fluid dynamics（CFD）
structural dynamics
wind tunnel
