Stiffness matrix and equivalent nodal force formula, which take into account of the influence of shear lag, are derived subsequently on the basis of the definition of stiffness coefficient.
以其解析式作为形函数，利用刚度系数的定义，推导了考虑剪滞影响的箱形梁单元刚度矩阵及等效结点力公式。
The irregular distribution of the wave load along the erect riser makes the computation of equivalent wave nodal force difficult when applying Finite Element Method to analyze risers strength.
波浪荷载沿垂直立管的分布是不规则的，这对工程中用有限元法分析立管强度进行等效波浪结点力的计算带来困难。
Equivalent additional stress method can be the same with integral method or combined method depending on the equivalent method of additional nodal force 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。
Equivalent additional stress method can be the same with integral method or combined method depending on the equivalent method of additional nodal force 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。
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