【摘要】 本文采用随机数值方法模拟噪声,并用有限元法分析噪声对大型冷却塔动力特性的影响。研究发现,无论是迭加噪声还是调频噪声,都将使冷却塔振动响应超过规定允许值。通过改变冷却塔塔体框架结构,改善了塔体的动力特性,噪声影响明显减少。更多还原

【Abstract】 The dynamical behaviour of cooling tower in ambient noise was investigated with FEM. We found that dynamical responce in resonace region was influenced strongly, and amplitude of vibration is higher then 0.18mm. After modified the structure, dynamical behavioue has been improved.更多还原