振动试验不免要用试件和夹具,它们和激振器的运动组件相比显得相当的大而笨重。在这样的情况中既为了減少横向振动也为了防护激振器机构免受损害,夹具应有外部的异振装置。为此目的使用了许多类型的导振装置;即,滑台、流体靜力轴承、滾子导振装置以及各种(?)装置。本文限于研究被称作“平行运动”的柔性系统。 Vibration tests inevitably require test pieces and fixtures, which are quite large and cumbersome compared to the moving parts of the exciter. In such a case, both the transverse vibration and the exciter mechanism should be protected against damage. The fixture should have an external vibration isolator. Many types of vibration-conducting devices are used for this purpose; namely, sliding tables, hydrostatic bearings, roller-guided vibration devices and various (?) Devices. This article is limited to studying flexible systems called “parallel motions.”