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简述了有限元中的子结构技术,并应用AN SY S软件中的多重子结构方法对翅片式换热器进行模态分析.同时考察了主要结构参数对设备固有频率的影响,为提高换热器结构的固有频率提供设计依据.
The substructure technology in the finite element is briefly introduced and the modal analysis of the finned heat exchanger is carried out by using the multiple sub-structure method in AN SYS software.At the same time, the influence of the main structural parameters on the natural frequency of the equipment is investigated, The natural frequency of the heater structure provides the design basis.