The objective of this study is to find the optimal production process in the aluminum IMS core parts. To reduce the production process, the total stage was designed at a total of 2 stages and 3 stages. In the total 2 stages process, the production stage was divided into a shaft part production and a yoke part production. In the total 3 stages process, the yoke production stages were subdivided into the 2 stages for distributing the stress. The results were compared and analyzed in terms of effective stress, folding characteristics and load characteristics. The stress distributions according to the production total stages were almost the same, the yoke production stage was received high stress due to the high strain. Both the tubular shaft yoke and solid shaft yoke according to the production total stages did not have any problems in the production because there did not occur the folding, metal flow and under-fill. When the total 2 stages were employed, the load for producing the tubular shaft yoke and the solid shaft yoke was decreased by 35.0% and 27.1%, respectively. As the results, when the total 2 stages process is applied rather than 3 stages process, the product is produced quickly and it is expected to be advantageous for the production cost due to the low load.

ABSTRACT
1. 서 론
2. 수치 해석적 연구 방법
    2.1 각 제품의 형상 및 물성치
    2.2 수치 해석 방법
3. 결과 및 고찰
    3.1 유효 응력 특성(Effective stress characteristics)
    3.2 접힘 특성(Folding characteristics)
    3.3 하중 특성 (Load characteristics)
4. 결 론
References

• 민세훈(Graduate School of Mechanical Engineering, Kongju National University) | Se-Hun Min
• 서현규(Division of Mechanical & Automotive Engineering, Kongju National University) | Hyun-Kyu Suh Corresponding Author