昆虫翅膀是典型的可展开系统，其羽化过程具有体积由小到大、结构由柔到刚的特点。一般认为翅膀的羽化展开的驱动来自翅脉内部血淋巴的流动，本项目基于离体蜻蜓翅膀成功展开的事实，考虑到展开的效率问题，提出一种新型展开驱动机理。它基于翅脉内部节肢弹性蛋白的高弹性和高回弹性与含水量的关系，指出在羽化开始阶段低含水量的节肢弹性蛋白接触到血淋巴时材料性能发生变化，从而产生的力学行为可以驱动翅膀的展开。具体实施方式为：通过设计实验测试含水量对翅脉材料性能的影响，观察干燥折叠翅膀在血淋巴刺激下的展开行为；基于聚合物弹性体的非线性理论，将节肢弹性蛋白的驱动力分解为溶胀行为的体积增加和在内部液压作用下的变形，并分别建立力学模型；通过用户自定义材料模型，考虑边界、接触和载荷等条件，通过Abaqus软件求解上述模型。通过以上研究手段，获得节肢弹性蛋白材料性能参数与含水量的关系，研究节肢弹性蛋白在羽化行为中发挥的作用，验证该展开机理的可行性。昆虫的羽化行为和节肢弹性蛋白都具有普遍性，本项目将二者联系起来提出一种基于自身结构材料的自驱动型展开机理。这不仅能够完善人们对于昆虫翅膀羽化展开中结构-材料-功能关系的认知，也可指导智能材料及仿生可展开结构的设计。

Insect wings are typical deployable structures. In eclosion the wing volume grows from small to big and the structure grows from soft to rigid, there are a lot can be learned from which to design the bionic deployable structure. In general, the spreading of insect wing is considered to depend on the hydraulic pressure of haemolymph flowing in the vein. But the fact is, isolated dragonfly wing could expand successfully. Based on that resilin turns to be of high elasticity and resilience when it is wet, the project proposes that the mechanical behavior of resilin could drive the wing to expand when it meets the hemolymph in veins from the very beginning of eclosion. The specific methods are implemented as follows. For experimental tests, the mechanical behaviors of vein containing resilin with different water content are tested, and the expanding behaviors of unexpanded dry wing dipped into hemolymph are observed. For theoretical modeling, under the framework of nonlinear theory of polymer elastomers, the driving behavior is decomposed as the increase of volume in swelling and the elastomer deformation under internal pressure of vein tube. For Finite element analysis, appropriate material model and parameters are defined in finite element software Abaqus. The models are solved considering proper boundaries, contacts and loads, and the swelling time, elongation and pressure-deformation relationship can be discussed. Through the approaches above, the influences of water content on material parameters are obtained, the roles of resilin in insect wing eclosion are studied, and the new mechanism of wing spreading is verified. Both the eclosion and resilin are universal among insects, they are brought together in this project to propose a new driving mechanism for wing expanding. The research could not only obtain a deep understanding of the material mechanical behavior-function relationship in insect wing, but also inspire the bionic design of smart materials and deployable structures with high performance.