The equivalent viscousdamping ratio and the equivalent natural frequency are obtained by comparing the system with a purely linear, spring-mass-damper system of single freedom.
通过和单自由度线性弹簧-质量-阻尼系统进行比较，得到该带裂缝梁结构的等效自然频率和等效粘滞阻尼比。
2
A new method for setting up the dynamic model of metal-rubber materials was proposed by using the equivalent viscousdamping theory.
提出了用等效粘性阻尼理论和试验相结合，建立金属橡胶材料动态力学模型的一种新方法。
3
The cause of acoustic loss is considered as the viscousdamping and the effect of impurity.