Efficient isogeometric formulation for vibration analysis of complex spatial beam structures
Efficient isogeometric formulation for vibration analysis of complex spatial beam structures
复制标题
用于复杂空间梁结构振动分析的高效等几何公式
DOI:
10.1016/j.euromechsol.2017.07.006
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发表时间:
2017-11
期刊:
影响因子:
--
通讯作者:
Hu Ping
中科院分区:
文献类型:
--
作者:
Zhang Xiangkui;Xia Yang;Hu Qingyuan;Hu Ping
Efficient isogeometric curved beam element is formulated to investigate the free vibration behavior of spatial beam structures with arbitrary curvature and torsion. Beam structures are described by multi-patch non-uniform rational B-splines. Isogeometric formulation with Timoshenko beam theory is applied with global formulation. Compared with prior formulations that use local formulation within a single patch, the present global formulation of stiffness and mass matrices for multi patch structures is effective in dealing with complex structures. Numerical tests are carried out on a series of models including a conceptual framework of an automobile to show the effectiveness of the present method.
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