【摘要】 以带转角的4节点20个自由度的四边形复合材料层合板单元为研究对象,建立了基于Mindlin一阶剪切变形理论的任意铺设情况层合板的有限元分析方法。该方法克服了在Kirchhoff假定下的板元素只能适用于很薄的高模量层合板元和较薄的低模量板元的局限性,具有实用性更广,精度较高的优点。更多还原

【Abstract】 Based on the first-order shear deformation theory(FSDT),the finite element analytic method using 4-node and 20 DOF quadrilateral bending element with angular rotation for arbitrary laminated composite plates is presented in this paper. The method overcomes the limitation of plate element under Kirchhoff assumption applied only to the thinnest laminated composite plate element with high modulus and thinner laminated composite plate element with low modulus. The method presents such advantages as simpler theory, wider application and greater accuracy.更多还原