Numerical analysis was performed to analysis the structural characteristics of the head device in the road mower system. The head device connects mower system with the boom of the special vehicle. The system with various road surface conditions is subjected to continuous vibration and repeated load. Especially, the maximum equivalent stress occurs in the pillar of the head device, and the maximum equivalent strain also occurs in the fixed plate that supports the mower system. Fatigue analysis results show that the upper end of the pillar is very vulnerable. This analysis results can be used as basic data for optimal road mower head system design.

Abstract
 1. 서론
 2. 전산 해석 기법
 3. 결과 및 고찰
  3.1 구조해석
  3.2 피로해석
 4. 결론
 References

• 허진석(Division of Mechanical and Automotive Engineering of Wonkwang University) | Jin-Seok Heo
• 채용배(Division of Mechanical and Automotive Engineering of Wonkwang University) | Yong-Bae Chae
• 임성진(Division of Mechanical and Automotive Engineering of Wonkwang University) | Sung-Jin Lim
• 임현호(Hanlim Technlolgy Co, Ltd.) | Hyeon-Ho Lim
• 이상호(Division of Mechanical and Automotive Engineering of Wonkwang University) | Sang-Ho Lee Corresponding Author