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提出一种新的梁单元解决半刚性连接的框架结构,这种单元使用铁木辛柯梁二阶效应模型。应用随动关系的幂级数展开法来改善此方法的稳定性,利用弹簧的转动和线刚度以及端板的刚度研究柔性和偏心连接的影响。由于压缩了附加的自由度,这种方法与一个标准梁单元的计算量相同,所得出的单元刚度矩阵表达式被认为是铁木辛柯梁二阶效应刚度矩阵和矫正矩阵的总和,所提出的单元在现有的有限元编码中比较容易实行,并使用一些基准问题来测试所提出方法的效率。
A new beam element is proposed to solve the semi-rigid frame structure. This element uses the second-order effect model of the Temujin Beacon. The stability of this method is improved by the power series expansion method of the follower relationship. The influence of the flexible and eccentric connection is studied by using the rotation and the line stiffness of the spring and the rigidity of the end plate. Since this method computes the same amount of computation as a standard beam element by compressing additional degrees of freedom, the resulting element stiffness matrix expression is considered as the sum of the second-order effect stiffness matrix and the correction matrix for the ferrocement beam. The proposed element It is easier to implement in existing finite element codes and uses some benchmarking questions to test the efficiency of the proposed method.