Chinese Journal of Mechanical Engineering >

2017 , Vol. 30 >Issue 5: 1184 - 1192

DOI: https://doi.org/10.1007/s10033-017-0168-3

ORIGINAL ARTICLE

Design Optimization of Irregular Cellular Structure for Additive Manufacturing

  • Guo-Hua Song ,
  • Shi-Kai Jing ,
  • Fang-Lei Zhao ,
  • Ye-Dong Wang ,
  • Hao Xing ,
  • Jing-Tao Zhou
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  • 1 School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China;
    2 Key Lab of Contemporary Design and Integrated Manufacturing Technology, Ministry of Education, Northwestern Polytechnical University, Xi'an 710072, China

Received date: 2016-12-03

  Revised date: 2017-07-11

  Online published: 2019-07-16

Supported by

Supported by National Hi-tech Research and Development Program of China (863 Program, Grant No. 2015AA042505).

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Abstract

Irregularcellular structurehas great potential to be considered in light-weight design field. However, the research on optimizing irregular cellular structures has not yet been reporteddue to the difficulties in their modeling technology. Based on the variable density topology optimization theory, an efficient method for optimizing the topology of irregular cellular structures fabricated through additive manufacturing processes is proposed. The proposed method utilizes tangent circles to automatically generate the main outline of irregular cellular structure. The topological layoutof each cellstructure is optimized using the relative density informationobtained from the proposed modified SIMP method. A mapping relationship between cell structure and relative densityelement is builtto determine the diameter of each cell structure. The results show that the irregular cellular structure can be optimized with the proposed method. The results of simulation and experimental test are similar for irregular cellular structure, which indicate that the maximum deformation value obtained using the modified Solid Isotropic Microstructures with Penalization (SIMP) approach is lower 5.4910-5 mm than that using the SIMP approach under the same under the same external load. The proposed research provides the instruction to design the other irregular cellular structure.

Key words： Irregular cellular structure; Additive manufacturing; Topology optimization; Relative density mapping

Cite this article

Guo-Hua Song , Shi-Kai Jing , Fang-Lei Zhao , Ye-Dong Wang , Hao Xing , Jing-Tao Zhou . Design Optimization of Irregular Cellular Structure for Additive Manufacturing[J]. Chinese Journal of Mechanical Engineering, 2017 , 30(5) : 1184 -1192 . DOI: 10.1007/s10033-017-0168-3

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