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目前飞机设计中主要采用工程方法计算加筋壁板的承载能力。本文介绍并评述了分段处理法、Johnson法和极限载荷法三种常用的工程方法,为了探讨哪种方法能更加满足工程需要,采用这三种方法对某型飞机中央翼加筋壁板及其试验件分别进行计算,表明其中极限载荷法的计算结果偏于安全,与试验结果吻合较好,并采用此法确定了中央翼加筋壁板的承载能力。最后采用极限载荷法进一步计算该型飞机机身11种构型加筋壁板轴压试验件,破坏载荷计算值与试验结果相当吻合,从而证实了极限载荷法是一种计算轴压加筋壁板承载能力更准确、实用的工程方法。
At present, the engineering method is mainly used to calculate the carrying capacity of stiffened siding in aircraft design. This paper introduced and commented three common engineering methods: sub-treatment method, Johnson method and limit load method. In order to find out which method can better meet the engineering requirements, The test pieces are calculated respectively, which shows that the calculation results of the limit load method are biased to safety, which is in good agreement with the experimental results. The bearing capacity of the central wing stiffened panel is determined by this method. Finally, the ultimate load method is used to further calculate the axial compression test of 11 types of reinforced wall panels of the aircraft fuselage. The calculated values of failure load are in good agreement with the test results, which proves that the ultimate load method is a method of calculating the axial compression reinforcement wall Board carrying capacity more accurate and practical engineering methods.