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应用第二类契比雪夫多项式推导出了悬臂梁的梁函数。并用其作为试函数,用加权残数法中的子域法计算出了狭长矩形截面梁弯扭屈曲时的临界载荷。
The second kind of Chebyshev polynomial is used to deduce the beam function of cantilever beam. Using this as a trial function, the critical load in the case of flexural and torsional buckling of a narrow, rectangular cross-section beam was calculated using the subdomain method in the weighted residual method.