Crack Group Effect Analysis of the Stress-Release Boot of Solid Rocket Motor Based on Numerical Simulation

Li, Tianpeng; Han, Junli; He, Yong; Yu, Guo

doi:10.1155/2021/2612441

Cited by 1 publication

(1 citation statement)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In this paper, the stress-release boot of SRM under vertical storage has been optimized. Stress-release boot can effectively improve the structural integrity of the SRM under solidification load [12,13]. Zhang et al [14] analyzed the influence of the stress-release boot by numerical calculation and found that the maximum Von Mises strain of grain decreased from 30.1% to 23.0%.…”

Section: Introductionmentioning

confidence: 99%

Multiobjective Optimization of Stress-Release Boot of Solid Rocket Motor under Vertical Storage Based on RBF Model

Miao

Zhang

Shen

et al. 2022

International Journal of Aerospace Engineering

View full text Add to dashboard Cite

Stress-release boot can effectively improve the structural integrity of SRM (solid rocket motor), but it will also influence the loading fraction and interior ballistic performance, so the purpose of this paper is to propose a multiobjective optimization method for stress-release boot. The design variables are the front and rear depth of the stress-release boot, and four optimization variables were determined according to the analysis of SRM performance. To optimize a SRM with star and finocyl grain, the RBF (radial basis functions) model that satisfies the accuracy requirements was established based on parametric modeling technology and the OPLHS (Optimal Latin Hypercube Sampling) method. Subsequently, the Pareto front was obtained based on the NCGA-II algorithm. And an optimal solution was obtained based on the evolutionary algorithm and weighted method. Compared with the initial SRM, the maximum Von Mises strain of the grain, the maximum principal stress of the insulator/cladding interface, the maximum axial displacement, and the volume increment decreased by 19.92%, 35.33%, 4.80%, and 4.42%, respectively. The optimization design method proposed in this paper has significant advantages in computational efficiency for the optimization of SRM and can take into account various performances of SRM, which not only is suitable for the optimization design of stress-release boot but also provides guidance for the optimization design of other shape parameters of SRM.

show abstract

Section: Introductionmentioning

confidence: 99%