【摘要】 变体飞行器的结构既需要改变气动外形，也需要传递载荷。针对一种变体翼尖的设计需要，使用能量方法，构建了等效力学模型。在实现对波纹板刚度特性等效替代的同时，获得了波纹板整体应变与结构内局部应变的转换关系，从而可以通过对波纹板局部材料进行失效判定，实现对波纹板整体失效应变的预测；经过实验验证，该等效力学模型的解析解与实验值相比平均误差在10%以内。通过对波纹板几何尺寸进行参数分析，获得了单元几何参数对波纹板失效应变和等效刚度的影响关系。最终，针对变体飞行器承载与变形的设计需要，对波纹板进行了优化设计，进一步评估了波纹板结构的强度与刚度特性，为变体翼尖的设计提供了依据。更多还原

【Abstract】 Morphing structures need to simultaneously change shape and carry loads. To satisfy the design requirements of a morphing wingtip, an equivalent model of corrugated panels is established based on the energy method. The model can represent the stiffness properties of the corrugated structures effectively and predict the failure strain of the corrugated structure by converting the effective deformation of the corrugated panels to the local strain in the structure. The equivalent model is verified by experiments and the average error between the analytical results from the equivalent model and the test results is less than 10%.The influence of the corrugation geometry on the failure strain and bending stiffness of the corrugated panel is investigated by parametric analysis. Finally, the corrugated panels are optimized to meet the requirements of shape-changing and load-carrying, which further evaluates the stiffness and strength properties of the corrugated structures and provides the guidance for the design of the morphing wingtip.更多还原