【摘要】 建立一类新的平面矩形与空间矩形块体单元,形函数构造考虑了单元内部不同方向位移间的耦合效应,通过对形函数引入耦合附加项,从而较真实地描述了单元内部场和节点值之间的函数关系。数值试验表明新的类型单元实施方便,较传统类型单元有更高的精度。更多还原

【Abstract】 A new kind of rectangular elements(generalized rectangular element) is developed.The coupling effect in the different directions of the displacement inside the element is considered,and the additional coupling terms are introduced in the shape functions.The accuracy of the relations between the displacement field inside the element and the displacements at nodal points of the element is approximately improved.Numerical tests show that the new element is convenient for implementation and has more accuracy than the conventional element.更多还原