【摘要】 本文研究在竖向谐荷载作用下结构的横向动力稳定问题。与文[2]～[8]不同,本文考虑了竖向谐荷载所产生的几何刚度阵为谐荷载扰频的函数这一情况,提出了一个新的求解方法,给出了相应的公式推导。通过算例得出了必须考虑扰频对动力几何刚度阵影响的重要结论。更多还原

【Abstract】 In this paper the lateral dynamic stability problem for a structure subjected to vertical harmonic load is studied.It differs from the References [2]-[8].The geometrical stiffness matrix produced by the vertical harmonic load is taken as a function of disturbance frequency of harmonic load. A new computing method is proposed and corresponding formulas are deduced. Some numerical results show that the effect of disturbance frequency on dynamic geometrical stiffness matrix must be considered when the instability region of a structure is computed.更多还原