Study of Finite Element Analysis on Launch Vehicle Connection Structural Strength

• 作者: WU Hao WANG Jingchao RUI Xing ZHANG Ling ZHU Zhentao YANG Fan WANG Bin CHEN Youwei ZHANG Dengyu WANG Shuai YANG Ruisheng YU Long WANG Zhuoqun
• 来源期刊: 中国航天（英文版）
• 年，卷（期）: 2021,（2）
• 所属期刊栏目: NEW GENERATION MEDIUM-LIFT LAUNCH VEHICLE—LM-8
• 页码范围: 59-64
• 页数: 6页
• 语种: 英文
• DOI: 10.3969/j.issn.1671-0940.2021.02.008

摘要

The strength of the connection structure has always been a key issue in the structural design of a launch vehicle.In this paper,the finite element analysis method is used for the strength of typical connection structures of a new launch vehicle.The research scope includes the inter-stage connection structure and the bundle connection struc-ture.Aiming at establishing the strength of these two connection structures under flight conditions,we built a refined finite element model,simulated the bolt tensile test and obtained a calculation criteria,and carried out finite element analysis of the connection structures under flight conditions.As a result,we not only established the analysis and evalua-tion method of the connection structures based on the refined finite element modeling analysis,but also provided a fast numerical simulation design method for the development of the launch vehicle's connection structures,which greatly improved the design efficiency and reduced the design risk.