Nonlinear natural vibration of prestressed self-balanced cable truss

作者：Yang Li Jun^*; Ye Bai Long; Yu Ai Nan; Wu Xiao

来源：Journal of Central South University(Science and Technology), 2011, 42(4): 1111-1116.

• Cable truss
• Effects of temperature
• Geometric non-linearity
• Initial tension
• Linear vibrations
• Natural vibration
• Non-linear vibrations
• Nonlinear vibration equation
• Nonlinearity
• Point-supported glass curtain wall
• Pre-stressed
• Self-balanced
• Support systems
• Temperature effects

The nonlinear natural vibration of prestressed self-balanced cable truss was investigated. Taking the temperature effect and geometric nonlinearity into consideration, the nonlinear vibration equation of prestressed self-balanced cable truss support system in point-supported glass curtain wall was derived by assuming the support system as a continuum membrane. By the Galerkin method, the partial differential equation was transformed into ordinary differential equation which was solved using L-P method. The effects of temperature, amplitude, initial tension and vector height on the nonlinear vibration were discussed using the engineering example. The result indicates that frequency of self-balanced cable truss support system decreases, which results in the increase of temperature, the vibration of self-balanced cable truss support system belongs to the nonlinear system, which is different from conventional structures, and its frequency varies with the amplitude of vibration, which shows hard spring characteristic. The nonlinear vibration frequency is higher than linear vibration frequency.

• 出版日期2011
• 单位中南大学