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ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 2022, Vol. 43 ›› Issue (12): 425964-425964.doi: 10.7527/S1000-6893.2021.25964

• Material Engineering and Mechanical Manufacturing • Previous Articles     Next Articles

Topology optimization of periodic multi-material heat conduction structures considering transient effects

LI Xinqing1, ZHAO Qinghai1,2, LONG Kai3, ZHANG Hongxin1   

  1. 1. College of Mechanical and Electrical Engineering, Qingdao University, Qingdao 266071, China;
    2. National and Local Union Engineering Research Center of Electric Vehicle Intelligent Power Integration Technology, Qingdao University, Qingdao 266071, China;
    3. State Key Laboratory for Alternative Power System with Renewable Energy Sources, North China Electric Power University, Beijing 102206, China
  • Received:2021-06-16 Revised:2021-07-05 Published:2021-08-17
  • Supported by:
    National Natural Science Foundation of China (52175236); China Postdoctoral Science Foundation (2017M612191)

Abstract: Periodic topology optimization of conventional heat transfer structures is based on the steady-state model without considering the influence of transient effects. Based on the multi-material interpolation model of Ordered-RAMP, a periodic transient heat conduction topology optimization model is constructed to minimize the maximum temperature and the maximum heat dissipation energy minimization of the heat conduction structure during the whole working time. Considering the transient heat transfer effect, the aggregation function is set in the mathematical model instead of the original design target, and the transient heat sensitivity format is derived by the concomitant variable method. Sub-region periodic constraint setting is achieved by reassigning the base value of the cell objective function. The numerical examples verify the effectiveness and feasibility of the proposed method. The results show that the periodic topological configuration with reasonable material distribution and clear boundary can be obtained under different thermal load working time, and the optimal performance can be achieved under different design objectives. The periodic constraint affects the topological configuration, and the more the number of sub-regions the worse the optimization objective.

Key words: transient effect, heat transfer structure, periodicity, multi-material, maximum temperature, heat dissipation energy

CLC Number: