Flexible Boundary Method in Dynamic Substructure Techniques Including Different Component Damping
Flexible Boundary Method in Dynamic Substructure Techniques Including Different Component Damping
复制标题
包括不同部件阻尼的动态子结构技术中的柔性边界法
DOI：
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发表时间：
2010
期刊：
影响因子：
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通讯作者：
A. Rittweger
中科院分区：
文献类型：
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作者：
S. Dieker;K. Abdoly;A. Rittweger
在结构动力学中，子结构技术有多种凝聚方法。这里描述了一种广义的凝聚方法，它包括大多数经典的凝聚技术，并允许在一个标准化的方法内的任意模态形状。在该方法的框架内，引入了一种灵活的边界方法，允许弹性和质量加载的边界的本征模式的确定，以及反映阻尼的影响的模式形状。从现有的文献中采取的其他方法的关系进行检查。对于阻尼结构，柔性边界法提供了一个凝聚过程，考虑到非比例和高阻尼结构的复特征模态的影响。为了实现不同阻尼子结构的耦合，提出了等效结构阻尼的方法。克服了与子结构对角系统阻尼和全三重矩阵乘积有关的问题。
There are various condensation methods for substructure techniques in structural dynamics. A generalized condensation method that comprises most of the classical condensation techniques and allows for arbitrary mode shapes within a standardized approach is described here. Within the framework of this method, a flexible boundary method is introduced that allows for elastic and mass-loaded boundaries for eigenmode determination, as well as for mode shapes that reflect the influence of damping. The relationship to other approaches taken from existing literature is examined. For damped structures, the flexible boundary method provides a condensation process that takes into account the influence of the complex eigenmodes of structures with nonproportional and high damping. To couple substructures with different component damping, the equivalent structural damping approach is provided. The problems associated with diagonal system damping of substructures and the full triple matrix product are overcome.