目前,在结构分析中广泛应用有限元法及有限条法。当单元或条数无限增加时,结果将收敛于正确解。但有限元、有限条法应用于承弯结构(梁、拱、框、箱、板、壳等)高频振动(结构高阶固有频率、振型与反应的高频分量)计算时,无论单元或条数取多少,结果仍将保留较大误差,即不能求得正确计算值。这一问题目前往往被工程技术界所忽视。 At present, finite element method and finite strip method are widely used in structural analysis. When the number of cells or units increases indefinitely, the result will converge to the correct solution. However, the finite element method and the finite strip method are applied to the calculation of high-frequency vibration (high-frequency natural frequencies of structures, high-frequency components of modes and reactions) of the bending structure (beam, arch, box, box, Or how many stripe number, the result will still retain a larger error, that can not be calculated correctly calculated value. This problem is often overlooked by engineering and technical circles.