Adaptive Plan Using Sigmoid Function for Nonlinear Topology Optimization

Van Tinh Nguyen, Ngoc Linh Tao, Thanh Trung Nguyen, Ngoc Tam Bui

Research output: Contribution to journalArticlepeer-review

Abstract

Topology optimization is a process that distributes material into the necessary position of a design area under the action of external force. The main purpose of this process is to decrease the mass of a structure whilst still ensuring its strength. In this field, proportional topology optimization (PTO) is a popular non-sensitivity technique. This method updates material density through the relationship between the maximum stress at each iteration and allowable stress of the material. Additionally, the target of the material amount is added or removed by a certain ratio of the total number of elements. This renders the optimization to reach convergence a time-consuming process. This paper assumes that the ratio of moving material at each iteration has a significant effect on the convergence of the optimization process. Thus, this paper proposes adaptive moving material using the Sigmoid function for the proportional technique. A cantilever with nonlinear characteristic material is used to verify the effectiveness of this approach

Original languageEnglish
Pages (from-to)710-716
Number of pages7
JournalInternational Journal of Mechanical Engineering and Robotics Research
Volume10
Issue number12
DOIs
Publication statusPublished - 2021 Dec

Keywords

  • adaptive plan
  • cantilever
  • nonlinear
  • topology optimization
  • volume

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Mechanical Engineering
  • Artificial Intelligence

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