【摘要】 采用有限元方法分析了四边简支铝合金板的弹塑性屈曲 ,得出了铝合金板弹性屈曲与弹塑性屈曲之间的临界宽厚比。并根据计算结果 ,在弹性屈曲临界应力公式的基础上 ,引入了塑性系数 ,拟合得到了简便实用的铝合金板的弹塑性临界应力计算公式更多还原

【Abstract】 In this paper,the elasto-plastic buckling of simply supported aluminum alloy plates is analyzed and the limit ratio of wide-to-thickness between elastic buckling and elasto-plastic buckling is obtained.According to the result of analysis,a elasto-plastic buckling critical stress formula that can be easily used in practice is brought up by introducing a plastic ratio to the formula of elastic buckling.更多还原