an analytical trial function method (atf) was developed based on the quadrilateral area coordinate system (qac-ii) for plane elements (acatf).
在四边形面积坐标qac-ii的基础上,建立了弹性力学平面问题的面积坐标解析试函数方法。
secondly, two plate elements are constructed by the combination of area coordinate and analytical trial function and they have excellent performance through numerical examples.