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本文对圆柱长杆在两端铰支、两端固定、一端固定另一端铰支以及一端固定另一端自由的四种不同约束条件下,因温度上升而在杆件中发生热屈曲现象时的临界温度T_k用新计算方法,即加权余力法进行分析计算,从而得出临界温度T_k的计算通式。这种方法的优点是计算简捷准确,它也是求解微分方程近似解的一种有效方法。
In this paper, the columnar pole in the two ends of the hinge support, fixed at both ends, one end fixed to the other end of the hinge branch and the other end of the free end of the four different constraints, due to temperature rise in the bar when the thermal buckling phenomenon critical The temperature T_k is calculated and calculated by a new calculation method, that is, the weighted residual method, and the formula for calculating the critical temperature T_k is obtained. The advantage of this method is that the calculation is simple and accurate, and it is also an effective method to solve the approximate solution of differential equations.