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弹性支承的设计一方面要求设备的相对运动(即弹性支承的变形等)要限于一允许范围,而另一方面,又要求弹性支承传递的力或加速度不超过规定值.因此,定量地了解安装弹性支承的设备对激励的响应,就显得必不可少.鉴此,本文试以振型的正交性为依据,用振型坐标求解弹性支承设备对激励的响应.设备的安装特性(包括基础的刚性质量等)对于设备的激励响应是一个多重的复杂因素;但是较之弹性支承而言,是微小的.所以,在工程实用上,可以进行下述简化:
The design of the elastic support requires, on the one hand, that the relative movement of the device (ie the deformation of the elastic support, etc.) is limited to a permissible range and, on the other hand, the force or acceleration transmitted by the elastic support does not exceed the specified value. Therefore, the response of the elastic support device to the excitation is solved by using the mode shape coordinates based on the orthogonality of the vibration mode.Furthermore, the installation characteristics of the device (including the basic Of the rigid mass, etc.) is a complex and complex factor for the excitation response of the plant; however, compared to the elastic support, it is small, so that in engineering practice, the following simplifications can be made: