Aluminum is currently being used for skins, stringers and frames. But Al-Li is better than aluminum for density, fracture toughness, fatigue ,corrosion resistance characteristics. Al-Li is being used for fuselage applications. This paper focus on bearing capacity and form deformation for the compression, tension and shear characters investigation of Al-Li panel by FEA and test method . The results of this study have shown the property of Al-Li panels is similar to conventional aluminum panels.% 铝合金是目前飞机蒙皮，长桁和框的首选材料。但第三代铝锂合金在密度、断裂、疲劳、耐腐蚀方面明显优于常规铝合金。因此，铝锂合金正逐步在机身结构中得到应用。本文通过有限元模拟和试验相结合的手段对铝锂合金机身壁板结构的压缩、拉伸和剪切承载能力和变形形式进行了分析。研究结果表明，铝锂合金机身壁板结构和常规铝合金壁板结构的失效模式是一致的。
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