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根据复合材料的力学特性,结合有限元理论和工程经验,提出了一种计算复合材料加筋板结构后屈曲承载能力的工程简化理论与方法,并以复合材料J型加筋板计算模型为例,从工程角度说明了计算后屈曲承载能力的思路与公式.利用该方法通过算例计算,将计算结果与实验结果进行对比,发现该种复合材料加筋板稳定性计算方法可以解决后屈曲的几何非线性带来的计算难度,能保持较高的精度,并可用于飞机结构设计的实际应用中.
According to the mechanical properties of composite materials, combined with finite element theory and engineering experience, a simplified engineering theory and method for calculating post-buckling bearing capacity of composite stiffened slab structures are proposed. Taking the J-stiffened composite slab computing model as an example , From the engineering point of view to calculate the post-buckling bearing capacity of the ideas and formulas.Using this method through an example calculation, the calculated results and experimental results were compared and found that the composite material stiffened plate stability calculation method can solve post-buckling Geometric nonlinearity brings the difficulty of calculation, to maintain high accuracy, and can be used in the practical design of aircraft structure.