Research on reinforcement scheme of solid rocket motor case based on prepreg winding

doi:10.19936/j.cnki.2096-8000.20211128.005

Abstract

Abstract: In this paper, a study on the mechanical properties of solid rocket motor composite shell samples was carried out using prepreg winding process. The mechanical behavior of composite shells was investigated and a refined numerical model of the composite dome using cubic-spline thickness prediction method was established. The burst pressure was predicted using Hashin failure criterion. With the aid of the test results, the failure mechanism of the composite shell was revealed. The influence of various reinforcement methods on the burst behavior of the composite shell was evaluated. The results show that the fine reinforcement of the dome can greatly improve the load carrying capacity of the shell. The burst pressure of the shell is increased by 50% with the reinforcement layup angle of 40°. The burst pressure increases with the increase of the reinforcement layer in a certain range. The local reinforcement for the damaged position will increase the hydraulic burst pressure of the shell to a certain extent. However, the unreinforced area at the dome of the shell will be damaged due to insufficient strength. This paper provides an important reference for design and production of composite solid rocket motor shell fabricated using prepreg winding.

Key words: prepreg winding, solid rocket motor shell, progressive damage analysis, refined dome reinforcement, composites

CLC Number:

TB332

WANG Xin, ZHANG Qian, FEI Yang, ZU Lei, JIN Shu-ming, XU Hui. Research on reinforcement scheme of solid rocket motor case based on prepreg winding[J]. COMPOSITES SCIENCE AND ENGINEERING, 2021, 0(11): 31-38.

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