Biologically Inspired Girder Structure for the Synchrotron Radiation Facility PETRA IV  

作　　者：Simone Andresen Norbert Meyners Daniel Thoden Markus Körfer Christian Hamm 

机构地区：[1]Bionic Lightweight Design&Functional Morphology,Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research(AWI),Am Handelshafen 12,27570,Bremerhaven,Germany [2]Deutsches Elektronen-Synchrotron(DESY),Notkestraße 85,22607,Hamburg,Germany

出　　处：《Journal of Bionic Engineering》2023年第5期1996-2017,共22页仿生工程学报（英文版）

基　　金：This study was financially supported by the Innovationsfonds from the Alfred Wegener Institute,Helmholtz Centre for Polar andMarine Research(AWI)and by the Deutsches Elektronen-Synchrotron(DESY),a research centre of the Helmholtz Association,[e-mail]。

摘　　要：Lightweight structures are widely used across different industry sectors.However,they get easily excited by external influences,such as vibrations.Undesired high vibration amplitudes can be avoided by shifting the structural eigenfrequencies,which can be achieved adapting the structural design considering optimisation procedures and structures primarily inspired by diatoms.This procedures has been applied to the development process of a girder structure installed in a synchrotron radiation facility to support heavy magnets and other components.The objective was to design a 2.9 m long girder structure with high eigenfrequencies,a high stiffness and a low mass.Based on a topology optimisation result,a parametric beam–shell model including biologically inspired structures(e.g.,Voronoi combs,ribs,and soft and organic-looking transitions)was built up.The subsequent cross-sectional optimisation using evolutionary strategic optimisation revealed an optimum girder structure,which was successfully manufactured using the casting technology.Eigenfrequency measurements validated the numerical models.Future changes in the specifications can be implemented in the bio-inspired development process to obtain adapted girder structures.

关 键 词：Biomimetics Eigenfrequency maximisation Evolutionary structural optimisation Lightweight design Topology optimisation Voronoi combs 

分 类 号：Q81[生物学—生物工程]