基于四节点Timoshenko层合梁理论和八节点薄壳单元相关理论,通过自编四节点板单元和八节点壳单元,实现了加筋前后双曲度复合材料薄壳单元的大网格高精度计算。结果表明：八节点单元精度稍高,但四节点单元分析的时间更短,因而效率更高,更具有工程实用性;筋条网格尺寸大小对计算精度影响小。研究成果可用于大规模复合材料双曲度结构设计和分析。
High precision calculation of double-curved composite was achieved by using programming 4-node and 8-node elements,which was an extension of 4-node Timoshenko laminate beam and 8-node shell element theory.It is found that the use of 8-node element achieves a more accurate result.However,the use of 4-node element is more effective since it can save much computation time,which is more applicable for the engineering computation.The dimension of the mesh of stiffener has little influence on the precision of the calculation result.The present work can be applied in designing and analyzing composite with double-curved structure.
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