DCAMM seminar No. 667 will be presented by
Cand.scient., PhD Thomas Hesselberg
Department of Zoology,
University of Oxford, UK
Abstract:
Numerical models are used increasingly in the fields of animal behaviour and comparative biomechanics to couple functional and evolutionary aspects of morphology and construction behaviour to the properties of biological materials. One particular promising avenue is the study of silk constructions as silk is a non‐linear natural polymer with an impressive toughness and elasticity. Here I will discuss how finite element modelling can be used to shed light on the extraordinary function of light‐weight orb webs. In particular I will focus on the permanent non‐sticky spiral in webs of the large tropical golden orb weavers. First I will show how a simple static finite element model can help explain the zigzag nature of the spiral before introducing a more complex dynamic model that helps explain how geometry and silk mechanical properties of the non‐sticky spiral interact to create stiffer webs capable of resisting higher wind‐loading. Finally I will briefly discuss how finite element modelling can be used to speculate on the anti‐predatory function of silkmoth cocoons based on how geometry and material properties affect their impact behaviour.
Danish pastry, coffee and tea will be served 15 minutes before the seminar starts.
All interested persons are invited