摘要
Taking the bending stiffness, static sag, and geometric non-linearity into consideration, the space nonlinear vibration partial differential equations were derived. The partical differential equations were discretized in space by finite center difference approximation, then the nonlinear ordinal differential equations were obtained. A hybrid method involving the combination of the Newmark method and the pseudo-force strategy was proposed to analyze the nonlinear transient response of the inclined cable-dampers system subjected to arbitrary dynamic loading. As an example, two typical stay cables were calculated by the present method. The results reveal both the validity and the deficiency of the viscoelasticity damper for vibration control of stay cables. The efficiency and accuracy of the proposed method is also verified by comparing the results with those obtained by using Runge-Kutta direct integration technique. A new time history analysis method is provided for the research on the stay cable vibration control.
Taking the bending stiffness, static sag, and geometric non_linearity into consideration, the space nonlinear vibration partial differential equations were derived. The partical differential equations were discretized in space by finite center difference approximation, then the nonlinear ordinal differential equations were obtained. A hybrid method involving the combination of the Newmark method and the pseudo_force strategy was proposed to analyze the nonlinear transient response of the inclined cable_dampers system subjected to arbitrary dynamic loading. As an example, two typical stay cables were calculated by the present method. The results reveal both the validity and the deficiency of the viscoelasticity damper for vibration control of stay cables. The efficiency and accuracy of the proposed method is also verified by comparing the results with those obtained by using Runge_Kutta direct integration technique. A new time history analysis method is provided for the research on the stay cable vibration control.
出处
《应用数学和力学》
EI
CSCD
北大核心
2004年第6期607-613,共7页
Applied Mathematics and Mechanics
基金
theNationalNaturalScienceFoundationofJiangxiProvince (0 3 50 0 61)
关键词
斜拉索
振动控制
粘弹性阻尼器
瞬态响应
stay cable
transient response
vibration control
non_linearity
