adina动力分析里,如何定义结构阻尼,就是alpha和beta的值!?
adina动力分析里,如何定义结构阻尼,就是alpha和beta的值!?我找到了连个地方,定义就是alpha和beta的值!好像分别是:
到底哪个是呢?
请问高手! 怎么能不学结构动力学,就来做计算?! 我也搭个车问下问题,旋转机械的启动力矩怎么转化为阻尼? 说实话,我没学过结构力学; 我也不清楚,不过我一般先取1,然后和实际情况做对比,看是否合理,然后再调整重新求解;如果什么都先学好再 去做的话,有些本末倒置了 you'd better do dynamic analysis without damping first, but with your load on the model, after that analysis, you can get response data, use FFT to analyze the data to get the two dominant frequencies, and use desired damping ratio to fit these to frequencies
页:
[1]