机身壁板剪切工程算法及试验验证

Engineering Algorithm and Test Verification of Fuselage Panel Subjected to Shear Load

本文针对机身壁板中蒙皮和长桁布置结构优化问题,考虑蒙皮厚度、蒙皮曲率、长桁形式以及长桁间距对机身壁板剪切稳定性的影响,分别设计加工了3类不同蒙皮曲率、宽度的试件和试验装置,并完成验证试验。应用工程算法对机身壁板进行计算,并与试验结果进行对比,结果表明,工程算法和验证试验结果吻合较好,蒙皮曲率、长桁结构形式和长桁间距对机身壁板剪切屈曲有一定的影响,蒙皮厚度对机身壁板剪切屈曲有较大的影响。

This paper focuses on the structure optimization of skin and truss layout in fuselage panel.Considering the influence of skin thickness,skin curvature,truss form and truss spacing on the shear stability of fuselage panel,three types of specimens and test devices with different skin curvature and width are designed and manufactured respectively,and the verification test is completed.The engineering algorithm is used to calculate the fuselage panel,and the calculation results are compared with the test results.The results show that the engineering algorithm is in good agreement with the verification test results.The skin curvature,truss structure and truss spacing have a certain influence on the shear buckling of fuselage panel,and the skin thickness has a great influence on the shear buckling of fuselage panel.