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航天结构系统属于重量轻、尺寸大的柔性结构,加之运行条件复杂,因此研究这类结构的振动特性及其控制就成为发展航天事业的重要课题之一。本文研究了作为构成航天结构系统基本构件——柔性梁的固有频率的理论计算与实验测试,结果表明,考虑重力影响的计算值与测试值十分接近,从而证明,在计算垂直柔性梁的固有频率时,不可忽视重力的影响。
Aerospace structural system belongs to the light weight, large size and flexible structure, combined with complex operating conditions, so the study of the vibration characteristics of such structures and its control has become one of the important topics in the development of aerospace industry. This paper studies the theoretical calculation and experimental testing of the natural frequency of the flexible beam, which is the basic component of the aerospace structural system. The results show that the calculated value considering the influence of gravity is very close to the measured value, which proves that when calculating the natural frequency of the vertical flexible beam When, can not ignore the impact of gravity.