橡皮绳悬挂系统对细长体飞行器地面模态试验影响分析

Influence of Elastic Rope Suspension System on Slender Vehicle Modal Test

以细长体飞行器橡皮绳模拟自由-自由边界模态试验为研究对象,通过有限元建模模拟,计算分析了不同悬挂刚度、不同悬挂位置橡皮绳悬挂系统对细长体飞行器地面模态试验结果的影响大小,影响因素,影响规律,提出了减小试验误差的方法,对细长体飞行器橡皮绳模拟自由-自由边界地面模态试验具有参考意义。

Elastic rubber rope simulating free-free boundary modal test of slender vehicle is researched. Through the finite element modeling simulation, calculation and analysis, different suspension stiffness and suspension position of elastic rope suspension system are studied. Affected magnitude, factors and rule to results are analyzed. The method to reduce the error of rubber rope simulating free-free boundary modal test of slender vehicle are put forwarded.