11.提供横向输入到结构上,支撑激振器来最好的办法是什么?

模态激振器相关问题

Usually a shaker stand such as the Model 2050A Lateral Excitation Stand or equivalent is used. The shaker needs to be supported at four separate points to allow appropriate horizontal motion of the shaker (as shown). At very low frequencies (below 5 to 10 Hz range), inertial weight is added to enhance the performance of the shaker system. These are generally heavy metal blocks that bolt onto the trunnion base, providing additional inertial mass for the exciter to push against while generating force input to the test structure.

一般情况下使用激振器支架,例如2050A型横向激励支架(如下面图4所示)或者类似的结构。激振器需要在四个独立的点上支撑起来,以允许合适的激振器水平运动(如图所示)。在很低的频率上(低于5~10Hz范围),要增加惯性重量以增强激振器系统的性能。这常常是很重的金属块体,用螺栓连接到耳轴底座上,在产生强迫输入到试验结构的过程中,对激振器的推动提供额外的惯性质量。

KSI-modal shaker FAQs-Fig05