论文部分内容阅读
通过动力学实验获得真实的太阳翼板间铰链结构于不同激振频率下的振动响应参数,并采用力状态映射法建立板间铰链的非线性动力学模型。首先,采用单频激励信号模拟外扰对实际的板间铰链结构实施动力学实验;然后,基于其结构具有的多重非线性动力学特性,根据实验数据应用力状态映射法辨识结构的动力学参数,建立其非线性动力学模型;最后,对由太阳翼板间铰链连接的两段梁所构成的系统进行了冲击激励下的振动响应测试,同时进行了有限元动力学仿真,实验测试结果和数值仿真结果取得了较好的一致性。本文建立的太阳翼板间铰链非线性动力学模型能够较好地反映其动力学特性,对于实际太阳翼结构的动力学建模具有理论参考价值。
The dynamic response parameters of the real solar panel hinge structure under different excitation frequencies were obtained by dynamic experiments, and the nonlinear dynamic model of the hinge between plates was established by force state mapping method. First of all, the single-frequency excitation signal is used to simulate the external disturbance to implement the dynamic experiment of the actual inter-plate hinge structure. Then, based on the multiple nonlinear dynamic characteristics of the structure, the dynamic state parameters of the structure are identified according to the experimental data , The nonlinear dynamic model is established. Finally, the vibration response of the system consisting of two beams connected by solar panels hinged and excited is simulated. At the same time, the finite element dynamic simulation, experimental test results and Numerical simulation results have achieved good consistency. The nonlinear dynamic model of the hinged solar panel established in this paper can well reflect the dynamic characteristics of the solar wing hinge, which is of theoretical reference value for the dynamic modeling of the actual solar wing structure.