摘要
针对空间飞行模拟器采用自由落体原理模拟空间失重运动环境的安全性和可靠性要求,提出了慢回弹海绵垫缓冲保护方法,建立了该种方法的数学模型,计算了慢回弹海绵刚度与模拟件下陷深度的关系以及慢回弹海绵刚度与模拟件受最大作用力的基本关系。设计了二层不同刚度回弹海绵组成的安全缓冲保护方案,并使用Abaquse建模、分析,仿真了试验过程。仿真计算结果表明该方案可行,在缓冲过程中的模拟件受到的局部最大应力小于模拟件的屈服强度。在实际试验中使用该方案得到了安全性验证。
In the paper,the author adopted principle of free fall to simulate weightlessness environment of spacecrafts,proposed slow rebound cushions buffering method and established mathematical models of the method.The author not only determined the relationship between the stiffness of the slow rebound sponge and the subsidence of the space flight simulator but also acquired the relationship between the stiffness of the slow rebound sponge and the maximum force of the space flight simulator.The author designed a security buffer protection method composed by two different stiffness slow rebound sponges,and used ABAQUSE to implement the simulation experiment.Simulation results show that the local maximal stress of the space flight simulator is less than that of the yield strength.Hence,the proposed method is capable of protecting the security of the space flight simulator.
出处
《机械设计与制造》
北大核心
2012年第5期76-78,共3页
Machinery Design & Manufacture
