...降噪效果,利用构件附近声场测量代替表面振动 测量,借助现代信息处理技术,测得镁合金 AZ31 的 阻尼损耗因子( damping loss factor , DLF) ,并与钢 的阻尼性能进行比较. 1 基本原理 选取矩形薄板作为阻尼测试的构件.
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对敷设粘弹性阻尼的加筋板的固有频率和模态损耗因子进行了分析。
This paper analyzes the natural frequency and modal loss factor of stiffened plates with viscoelastic damping treatment by finite element method.
给出了约束阻尼夹层板固有频率和损耗因子的一种有限元计算方法。
A numerical computation method of the natural frequency and the loss factor of the sandwich plate with constrained damping layer is given in this paper.
分析结果表明阻尼层的刚度和损耗因子极大地影响圆柱壳中的波传播和功率流。
It is found that the stiffness and damping factor of coatings greatly influence the wave propagation and power flow.
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