【摘要】 为探究薄板的屈曲破坏性能,以飞机机身设计中最常用的铝合金薄板结构为研究对象,利用金属材料塑性修正系数分析矩形薄板的屈曲失效,得到在均布压力和不同约束条件下矩形薄板的临界屈曲应力。数值仿真算例及其有限元计算结果对比,验证该方法的正确性。更多还原

【Abstract】 To study the buckling failure behavior of thin plate, the aluminum alloy thin plate structure which is most commonly used in aircraft fuselage design is selected as the object, and the analysis of buckling failure of rectangular thin plate is carried out by using plastic correction coefficient of metal material. The critical buckling stresses of rectangular thin plate under uniform pressure and different constraints are obtained. The numerical results of a simulation case are compared with its finite element results, and it shows that the method is accurate.更多还原