A new data-driven topology optimization framework for structural optimization

Ying Zhou, Haifei Zhan, Weihong Zhang, Jihong Zhu, Jinshuai Bai, Qingxia Wang, Yuantong Gu

Research output: Contribution to journalArticlepeer-review

45 Scopus citations

Abstract

The application of structural topology optimization with complex engineering materials is largely hindered due to the complexity in phenomenological or physical constitutive modeling from experimental or computational material data sets. In this paper, we propose a new data-driven topology optimization (DDTO) framework to break through the limitation with the direct usage of discrete material data sets in lieu of constitutive models to describe the material behaviors. This new DDTO framework employs the recently developed data-driven computational mechanics for structural analysis which integrates prescribed material data sets into the computational formulations. Sensitivity analysis is formulated by applying the adjoint method where the tangent modulus of prescribed uniaxial stress-strain data is evaluated by means of moving least square approximation. The validity of the proposed framework is well demonstrated by the truss topology optimization examples. The proposed DDTO framework will provide a great flexibility in structural design for real applications.

Original languageEnglish
Article number106310
JournalComputers and Structures
Volume239
DOIs
StatePublished - 15 Oct 2020

Keywords

  • Constitutive model
  • Data-driven computational mechanics
  • Material data set
  • Moving least square
  • Topology optimization

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