FEM analysis of spider web inspired structures

The capability of a spider web structure to absorb energy by deforming itself without breaking is like no other structure in the world. The structure light weight and its capability to trap a flying prey are the result of natural evolution thus now we try to learn from spiders how to build a more efficient structure to absorb kinetic energy. In this project both the material and the structure are studied and tried to be reproduced with polymeric material (PLA). First a literature review is done in the introduction then the production and testing of PLA thread is described. FEM simulations are developed to analyze different structural elements functions and behavior according to material’s properties. The results demonstrate that the spiral in an orb-web structure is important when the external load is applied off center on the web and that a linear material is not good in this application. A complete approach is developed to put together the experimental and simulation aspects. The procedure and tools used here can easily be readapted to further studies.