잔류응력을 고려한 Lower Control Arm의 내구해석 = Life Prediction of the Lower Control Arm considering the residual stress effect

다국어 초록 (Multilingual Abstract)

Fatigue life prediction of a lower control arm is carried out with finite element methods. The lower control arm has heat effected zone induced from a seam welding process. The residual stresses generated in the zone are measured by a x-ray stress analyzing equipment. Since the residual stress has much effects on the fatigue life, the residual stress is considered in the fatigue life prediction process as mean stresses with relaxation effect. The heat transfer and a thermal elasto-plastic analyses are performed and verified with measured residual stress value. The fatigue life predicted by simulations are compared with test results.

목차 (Table of Contents)

• Abstract
  
• 1. 서론
  
• 2. LCA 용접부 특성 및 잔류응력 분석
  
• 3. 내구해석 및 시험결과와의 비교
  
• 4. 결론
  
• References