Multiscale Isogeometric Topology Optimization of Cellular Structures for Heat Dissipation

doi:10.3901/JME.2024.01.054

Abstract

Abstract: Cellular structure with the characteristics of light weight and fast heat dissipation is widely used in aerospace, information electronics and other fields. A multiscale isogeometric topology optimization method of cellular structure for heat dissipation is proposed. At the microscale, The level set function is adopted to describe the geometric configuration of the triply periodic minimal surface lattice. Kriging meta-model is constructed to predict the macro effective thermal properties of the lattice, thus reducing the calculation cost. At the macroscale, The multiscale isogeometric topology optimization model of cellular structure is established with the objective of minimum thermal compliance. Isogeometric analysis is introduced to improve the computational accuracy of structural performance analysis. Multiscale topology optimization design of irregular geometric structures is carried out by combining isogeometric mapping technology, which avoids the problems such as geometric feature defect caused by the cutting of the lattices in the irregular design domain. It is shown by results that the optimal design of heat dissipation performance of irregular geometric structure can be realized by the proposed method, and the lightweight graded cellular structure with great heat dissipation performance optimized by the proposed method has broad application prospects in practical engineering.

Key words: isogeometric analysis, multiscale topology optimization, triply periodic minimal surface, Kriging metamodel, heat dissipation performance

CLC Number:

TG156

HUANG Mingzhe, XIAO Mi, LIU Xiliang, SHA Wei, ZHOU Mian, GAO Liang. Multiscale Isogeometric Topology Optimization of Cellular Structures for Heat Dissipation[J]. Journal of Mechanical Engineering, 2024, 60(1): 54-64.

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