The sufficient conditions to an instable structure are heavy mass, small stiffness and damping and tall with high aspect ratio.
形成不稳定的充分条件是结构的质量轻、刚度小、阻尼小、或是高度(长度)大、长细比大。
2
The method of design and the damping valve structure can be a useful guide in the design of hydro pneumatic suspension, especially in heavy duty vehicle design.
提供的设计方法和结构方案可以作为油气悬挂，特别是重型车辆油气悬挂阻尼阀设计的参考。
3
A wedge type rubber mounting is an important damping element for steyr heavy duty truck, it is installed on frame used to support transmission gearbox.