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基于非线性地基弹性梁屈曲传播的动态控制方程,考虑梁质量惯性的影响,用有限元和时间积分相结合的方法,计算和分析了止屈器对梁屈曲传播抑制的作用.止屈器是通过局部加大地基刚度加以模拟.研究表明:考虑动态得到的止屈效果和前人以准静态为前提的结果相比有明显不同.
Based on the dynamic equations of buckling propagation of elastic beams on nonlinear foundations, considering the influence of mass inertia of beams, the effect of the buckling device on the buckling propagation of beams was calculated and analyzed by the combination of finite element method and time integral method. The buckling device was simulated by locally increasing the stiffness of the foundation. Studies have shown that: considering the dynamics of the flexion effect is significantly different from the results of predecessors based on quasi-static conditions.