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Study on the method for predicting vibration characteristics of large and complex structures
Author(s): 
Pages: 390-398
Year: Issue:  4
Journal: Journal of Ship Mechanics

Abstract: 针对大型复杂结构振动特性的预测问题,发展了子结构方法,并应用于圆柱壳模型的振动特性研究.讨论了子结构方法的理论基础,分析了子结构间边界处理协调条件、模态截取数和模型缩聚对子结构方法预测精度的影响,并初步比较了其与传统有限元法耗费的计算时间量和内存量的大小,最后,进一步探讨了子结构方法中试验模态与计算模态混合计算的可行性.研究结果表明,子结构方法应用于求解船舶等大型复杂结构的振动特性是可行的.
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