【摘要】 在 Vlasov导出的一般薄壁杆件扭转屈曲微分方程式的基础上 ,利用迦辽金法导出计算扭转屈曲临界应力的广义特征值问题 .研究了侧向应力为定值、轴向压力为活载荷的情况 ,探讨了侧向压力对轴向临界应力的影响 .考虑了板对加强筋的弹性转动约束 ,对板内压应力的影响以及板受压屈曲后屈曲模式的影响亦进行了讨论更多还原

【Abstract】 On the basis of the Vlasov’s differential equation for torsional buckling of thin walled bars, a generalized eigenvalue problem for tripping of stiffeners was derived by using the Galerkin’s method. The effect of the lateral pressure (dead load) to the critical axial stress (live load) upon tripping was investigated by solving the eigenvalue problem. The rotational restraint provided by the plate was taken into account. The effects of the compressive stress in the plate and the plate buckling mode were also discussed.更多还原