Mechanical performance tests of Bamboo Beetles Otidognathus Davidis Fairs' abdominal shells

摘要

The biomaterials, with excellent properties such as high strength-weights ratio, will inspire inspirations about bionic composite materials to satisfy the scalding hypercriticisms for aerial materials. The investigations of biomaterial mechanical performances are of great advantages in bionic designs and bionic manufactures. The mechanical performances of Bamboo Beetles Otidognathus Davidis Fairs' abdominal shells were tested with a nano-indenter in this paper. The experiments results demonstrated that the harnesses and modulus are different at different test areas. The mechanical performances resemble much at the same latitude but decrease along longitude from the forehead to the rearward, indicating that the mechanical performances of the abdominal shells distribute topologically. What's more, the topological distributions of mechanical performances illustrate a kind of unlearned structure optimizations of insects which will provide edifications to designs of light and strong materials.