甲虫鞘翅锁定机构的微几何形态及联接强度的研究

【作者】 张亚锋；

【导师】 戴振东； 谢兰生；

【作者基本信息】 南京航空航天大学 ， 航空宇航制造工程， 2004， 硕士

【摘要】 针对甲虫的鞘翅具有非常巧妙而高效的锁定机构，本文以神农蜣螂(Catharsius molossus(Linnaeus))为重点研究的物种，通过对甲虫鞘翅与身体及左右两个鞘翅之间的联接机构进行观测，发现甲虫的鞘翅与身体除了在翅根部位是通过关节与中胸连接外其余部位均为通过附着在其上的毛刺之间的摩擦接触来实现联接的。 本文综合了十个科的十七个物种，通过对甲虫鞘翅间联接区域的切片的研究，发现所有甲虫的鞘翅间联接机构都采用凹凸啮合结构；通过对鞘翅间联接机构的联接强度的测定，发现白星花金龟(Protaetia(Liocola)brevitarsis(Lewis))在该区域的联接强度为最高；通过对甲虫鞘翅间联接区域在扫描电镜下微几何结构的研究，发现毛刺和小凸起在该区域的联接机构中起着非常重要的作用。 在对甲虫的鞘翅锁定机构的控制机理进行研究的过程中发现鞘翅与胸腹部之间的联接机构的锁定是被动的，只有在受到外界的作用力时才会自动或主动增大联接力，这种联接机构的工作方式恰好体现了其高效与节能的优越性。更多还原

【Abstract】 The locking mechanics of beetles between forewings and forewing to abdomen are skillful and high-efficient. This thesis focus on dung beetle Catharsius molossus (Linnaeus) in addition to some other kinds of beetles and studied the morphology of the elytron-locking fields of them by using stero-microscopy and Scanning Electron Microscopy. A bristle-based coupling structure was observed on the surface of the elytron-locking fields.An analysis by synthesis on the locking mechanics between right and left elytron of seventeen species of beetles which belong to ten families respectively has been done. A double tongue-and-groove joint between the right and left elytra in coleoptera was observed ubiquitously through the slices of the abdomen-medial field of elytra. According to the mensuration we have done for the elytron-locking strength of linkage, Protaetia (Liocola) brevitarsis (Lewis) has the strongest elytron-locking devices. The microtriches were found very important for the elytron-locking devices when they are working.During the investigation about the elytron-locking devices’ control mechanism, it is found passive for the elytron-locking devices of beetles to work. Only when it is suffering forces from outside the beetle strengthen it’s elytron-locking devices automatically or initiatively to protect it’s body from spoiling. This kind of working approves the superiority of beetles’ elytron-locking devices in high-efficiency and energy-saving.All of the results set up a basis for the further bionic design.更多还原