加筋压筋夹层板的固有频率分析

这是ISSC的BENCHMARK研究内容.首先对没有敷设层时的计算结果与实验结果进行了比较,以验证计算模型的有效性.对两种加筋压筋夹层板结构的固有频率进行了分析.对夹心层和厚表层分别采用偏心壳单元和固体单元进行了计算,并与实验结果进行了比较.结果表明,对于夹心层无论厚薄,均为采用固体单元较适宜.最后对有无夹层处理的结构固有频率也进行了比较.

Eigenfrequency analysis of stiffened swedged sandwich plate

This is work of ISSC BECHMARK study.First,for proving efficiency of finite element models,the calculated results of finite element models of stiffened swedged plate without damping layer treatment are compared with experimental results.The calculated results of finite element models of two stiffened swedged sandwich plates are compared with experimental results.In the analysis,core layer and thick con - strained layer are modeled by shell element with offset and solid element,respectively.The study on eigen - frequency analysis of stiffened swedged shows that the result with solid element is more accurate compared with that with shell element for core layer,whether thin core layer or thick core layer is applied.Finally,re - sults of eigenfrequency of calculated and experimental models also are compared between structures with damping treatment and without damping treatment.