管路支架谐波响应特性分析及简化模型的建立

摘要

通过对管路支架进行含预应力的谐响应分析,了解支架的频域特性,并在此基础上建立垂向和横向2个方向的二自由度简化模型.这种简化模型不同于以往单自由度模型,它充分考虑管路支架本身质量对其动力学特性的影响.经过验算,这种简化模型在设置合适的阻尼情况下能很好地模拟管路支架在频域内的动力学行为.%Two-degree-of-freedom modals are created on two directions of transverse and vertical based on the harmonic response analysis under prestress of piping support and its frequency characteristic. It differs from traditional single-degree-of-freedom modal because that it takes the impact of mass of piping support on its dynamic characteristic into consideration. Emulational calculation proves that these simplified modals can simulate the harmonic response characteristic of piping support by inputting right damping coefficient.