The objective of this study is to optimize the diameter of tubular shaft yoke and solid shaft yoke, which are the core components of Al IMS for xEV. The processes of both products were designed totally 6 steps to manufactured the shaft part and the yoke part. The diameter of solid shaft yoke and tubular shaft yoke were changed from 20mm to 25mm and from 30mm to 35mm, respectively. Al 6082 was applied to the material of both products. The friction condition between die and material was employed Oil_Cold (Aluminum) with reference to the library in the program. The results were analyzed and compared in terms of effective stress, effective strain, and nodal velocity characteristics. The effective strain value for manufacturing the yoke part was higher than the shaft part because its part has a complex geometry. The value of nodal velocity was also higher with high effective strain region. However, in 6 stage process of tubular shaft yoke, although it had the high effective strain value, the nodal velocity value was the lowest due to the piercing process. The effect of shaft part diameter on effective stress in the tubular shaft was difficult to observe, however, in the solid shaft yoke, when the shaft part of one increased, the effective stress value was increased due to the larger yoke size.

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 무게 특성 (weight characteristics)
    3.2 유효 변형률 특성(effective strain characteristics)
    3.3 절점 속도 특성(nodal velocity characteristics)
    3.4 유효 응력 특성(effective stress 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