Journal of Bionic Engineering ›› 2023, Vol. 20 ›› Issue (5): 1996-2017.doi: 10.1007/s42235-023-00373-7

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Biologically Inspired Girder Structure for the Synchrotron Radiation Facility PETRA IV

Simone Andresen1; Norbert Meyners2; Daniel Thoden2; Markus Körfer2; Christian Hamm1   

  1. 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), Notkestra?e 85, 22607 Hamburg, Germany
  • 出版日期:2023-08-26 发布日期:2023-09-06
  • 通讯作者: Simone Andresen E-mail:simone.andresen@awi.de
  • 作者简介:Simone Andresen1; Norbert Meyners2; Daniel Thoden2; Markus K?rfer2; Christian Hamm1

Biologically Inspired Girder Structure for the Synchrotron Radiation Facility PETRA IV

Simone Andresen1; Norbert Meyners2; Daniel Thoden2; Markus Körfer2; Christian Hamm1   

  1. 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
  • Online:2023-08-26 Published:2023-09-06
  • Contact: Simone Andresen E-mail:simone.andresen@awi.de
  • About author:Simone Andresen1; Norbert Meyners2; Daniel Thoden2; Markus K?rfer2; Christian Hamm1

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

Abstract: 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.

Key words: Biomimetics , · Eigenfrequency maximisation , · Evolutionary structural optimisation , · Lightweight design , · Topology optimisation , · Voronoi combs