in triangular and rectangle elements, the rfi is equivalent to area coordinates of triangular and bilinear polynomial interpolation in quadrilateral, respectively.
在三角形单元和矩形单元上,多边形有理函数插值分别等价于传统有限元的三角形面积坐标插值和四边形双线性插值;
the mixed application of three version quadrilateral area coordinates can be used to formulate a new 8-node quadrilateral membrane element.
混合应用三类四边形面积坐标构造出一个四边形八结点单元qac-q8;
in this paper, the differential and integral formulas for area coordinates in quadrilateral elements are presented.
构造四边形单元时,应用面积坐标方法有其优点。