铝锂合金机身壁板拉伸承载能力对比分析

摘要

本文通过有限元计算及试验两种方法对比分析了铝锂合金蒙皮和挤压铝锂合金长桁组成的机身壁板与铝锂合金蒙皮和钣弯7000系列高强度铝合金长桁所组成的机身壁板的抗拉能力.通过分析对比得到了两种机身壁板的抗拉承载能力,并比较出了两种壁板的抗拉承载能力强弱.分析结果表明,铝锂合金蒙皮和挤压铝锂合金长桁组成的机身壁板抗拉承载能力高于等截面的铝锂合金蒙皮和钣弯7000系列高强度铝合金长桁所组成的壁板.%A comparison of the tensile bearing capacity between the panel with aluminum lithium alloy skin adding aluminum lithium alloy stringers and the panel with aluminum lithium alloy skin adding 7000 series high strength aluminum alloy stringers is presented by the finite element calculation and tests. Through the calculation and the tests, the tensile bearing capacity of the two kinds panels are gotten. It is shown that the tensile bearing capacity of the panel with aluminum lithium alloy skin adding aluminum lithium alloy stringers is better than the other kind fuselage panel.