推进技术 ›› 1994, Vol. 15 ›› Issue (6): 42-49.

• • 上一篇    下一篇

长期贮存的固体火箭发动机药柱的温度应力分析

冯志刚,周建平   

  1. 国防科技大学航天技术系;国防科技大学航天技术系
  • 发布日期:2021-08-15
  • 基金资助:
    国家自然科学基金

THE THERMAL STRESS OF SOLID ROCKET MOTOR GRAIN IN STORAGE

  1. Department of Astronautics, National Univ. of Defense Tech., Changsha, 410073;Department of Astronautics, National Univ. of Defense Tech., Changsha, 410073
  • Published:2021-08-15

摘要: 分析了固体火箭发动机药柱在长期贮存过程中,由于温度载荷谱的变化所引起的力学响应。基于粘弹性积分蠕变型本构关系,推导出了能分析粘弹结构热载荷的有限元模型,并用它分析了梁、厚壁圆筒与真实固体火箭发动机的热应力问题。

关键词: 固体推进剂火箭发动机;推进剂药柱;推进剂可储存性;粘弹性;热应力

Abstract: Stress analysis of solid propellant motor when temperature varies in storage is presented in this paper. A viscoelastic finite element model based on integral creep constitutive relation is obtained and applied to .the thermal stress analysis for viscoelastic beams, cylinders and solid propellant motors.

Key words: Solid propellant rocket engine;Propellant grain;Propellant storability;Viscoelasticity;Thermal stress