However it is difficult to conduct the aseismic designs of modern and large complicated structures with long spans, and deal with non proportional damping etc.
但难以解决大跨度、现代大型复杂结构的抗震设计以及处理非比例阻尼等情况。
A simplified approach in dealing with damping in structures is reviewed in this paper. It is pointed out that the proportional damping theory is adaptable for small damping structures.
对工程结构中阻尼矩阵的简化处理途径做了简要评述，指出目前常用的比例阻尼理论对于小阻尼结构是适用的。
For the earthquake resistant analysis of actual engineering structures, most of structural systems have the properties of non-proportional (non-classical) damping, I.
在实际工程结构的抗震研究中，一般结构体系都具有非比例阻尼特性。
Methods of increasing damping radio are introduced for fluid power system, and the pneumatical proportional servo system with variable damping ratio is put forward.
介绍了流体动力系统常用的提高阻尼比的方法，提出了可调液压阻尼器的变阻尼气压比例伺服系统。
It finds that the damping coefficient is directly proportional to not only wave frequency, but the filling fraction of bigger damping material.
讨论了不同填充比下固有频率对应的衰减系数关系曲线，得出了衰减系数随着大阻尼材料填充比的增大而增大。
It finds that the damping coefficient is directly proportional to not only wave frequency, but the filling fraction of bigger damping material.
讨论了不同填充比下固有频率对应的衰减系数关系曲线，得出了衰减系数随着大阻尼材料填充比的增大而增大。
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