【摘要】 利用ANSYS软件中的子空间迭代法,分析了辐射式张弦桁架结构的自振特性,针对不同的参数,如辐射桁架臂数、矢跨比、垂跨比、撑杆数目、环向索数目、径向索预应力度和环向索预应力度等进行了大量参数分析,得出了各参数对辐射式张弦桁架结构的自振特性的影响及该结构的自振规律。更多还原

【Abstract】 The free vibration characteristics of radiate string truss structure were analyzed systematically with subspace iteration method of software ANSYS.Though a large amount of the different parameters,such as the number of radiate truss,rise-span radio,sag-span radio,number of struts,number of round lateral string,prestress of radiate string,prestress of round string,etc.the influence of several parameters on the free vibration characteristics of radiate string truss structure as well as the pattern of free vibration were obtained.更多还原