【摘要】 对上下壁板采用非均衡铺层的大展弦比复合材料机翼进行了气动弹性分析。建立了不同掠角和壁板铺层非均衡程度的气动弹性模型,并考虑了壁板铺层非均衡程度的变化。分析了严重载荷情况下,机翼变形、升力特性弹性修正等随壁板铺层非均衡程度的变化,并分析了固有振动特性和发散/颤振速度随壁板铺层非均衡程度的变化趋势,以期为进行这类结构的设计提供参考。研究结果表明:壁板铺层的非均衡程度对于所研究机翼的固有振动频率、颤振速度影响较小,但对发散速度和机翼的静气动弹性性能影响较大。更多还原

【Abstract】 The aeroelastic analysis was performed on the high-aspect-ratio composite wings with unbalance laminates in upside and downside skins.Considering the effect of the variation of the unbalance laminates of skins on the aeroelastic performance,aeroelastic models were built for the high-aspect-ratio composite wings with different swept angles and unbalance laminates in the skins.The variations of the deformation and the lift performance in the case of heavy loads with the unbalance level of the skin laminates were analyzed for the wings,as well as the variation tendency of the vibration characteristics and the divergence/flutter speed.The results show that the unbalance level of the skin laminates has great effects on the divergence speed and static aeroelastic characteristics of the wings,but little effects on the natural frequencies and flutter speed.更多还原