But force shape functions in flexibility methods establish the relations of nodal forces and section forces, and the results are exact.
而基于力的形函数的柔度法建立了单元两端与单元内部力的关系，能够得到精确的结果。
2
Equivalent additional stress method can be the same with integral method or combined method depending on the equivalent method of additional nodalforce calculated.
等效附加应力法根据附加节点力计算方法的不同分别对应整体式和组合式方法。
3
Stiffness matrix and equivalent nodalforce formula, which take into account of the influence of shear lag, are derived subsequently on the basis of the definition of stiffness coefficient.