Journal of the Korean Society of Manufacturing Process Engineers (한국기계가공학회지)

The Korean Society of Manufacturing Process Engineers (한국기계가공학회)
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Lightweight Optimization of Infant Pop-up Seat Frame Using DMTO in Static Condition

DMTO 기법을 활용한 정적 하중환경의 유아용 팝업시트 프레임의 경량화

  • Hong, Seung Pyo (Graduate School of Future Convergence Engineering, Kongju National University) ;
  • Cha, Seung Min (Alga Co.Ltd) ;
  • Shin, Dong Seok (Graduate School of Mechanical Engineering, Kongju National University) ;
  • Jeon, Euy Sik (Graduate School of Future Convergence Engineering, Kongju National University)
  • Received : 2021.09.30
  • Accepted : 2021.11.14
  • Published : 2022.01.31
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Abstract

This paper proposes a solution to the problems of manufacturing cost and processability by applying discrete material and thickness optimization (DMTO) and minimizing the use of high-strength, lightweight materials in the optimization process. A simple infant pop-up seat model was selected as the application target, and the weight reduction effect and variation in strength according to the optimization results were observed. In this study, a simplified finite element model of an infant pop-up seat frame was first constructed. The model was used to perform a static structural analysis to verify the weight and strength of each part. The D-optimal design of the experimental method was then used to observe the influence of each part on the weight and strength. This process was applied using discrete thickness optimization (DTO) (which applies high-strength, lightweight materials and optimizes only the thickness) and DMTO (which considers both the material and thickness). The DTO and DMTO results were compared to verify the design method that determines the major parts and simultaneously considers the material and thickness. Accordingly, in this study, an optimal lightweight design that satisfied the strength standards of the seat frame was derived. Furthermore, discretization parameters were used to minimize the application of high-strength, lightweight materials.

Keywords

Acknowledgement

This paper was supported by the Human Resource Training Program(S2755803) for business-related research and development and Technology development Program(S2902829) of Ministry of SMEs and Startups, (MSS, Korea)

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