【摘要】 研究了鞍形索网屋盖振动时的受力特点,在连续性薄膜理论的基础上建立了矩形鞍形索网非线性振动的平衡微分方程,采用能量法推导出了鞍形索网的非线性自振频率的解析表达式,讨论并分析了激励幅值和索网拱度对索网的自振频率的影响,并得到各参数与自振频率的关系曲线,结果表明:激励幅值与索网拱度都是自振频率的增函数。更多还原

【Abstract】 The stress characteristics of saddle cable net roof vibration was studied,the balanced differential equation of the rectangular saddle cable net non-linear vibration was built based on continuous film theory,the expression of saddle cable net non-linear natural frequency of vibration was deduced with energy method.The motivated amplitude and cable net camber influences on natural frequency of vibration were discussed and analyzed,the relationship curve between various parameters and natural frequency of vibration was obtained.The result indicated that both motivated amplitude and cable net camber were increasing function to natural frequency of vibration.更多还原