자동차강판 점용접부의 전단/십자 인장강도 예측

다국어 초록 (Multilingual Abstract)

Spot welding is the dominating process for joining of an automotive body due to the reliability and low cost. The crashworthiness which is one of the most important requirements in a car is largely affected by the strength of individual spot welds. Therefore, many car designers have tried to apply behavior of spot welds to crash analysis in order to increase the accuracy of the simulation. Although the strength of spot welds is required, it is very difficult to obtain those properties with respect to the thickness, materials and welding conditions.
In this paper, the strength of spot welds is predicted from many experimental results. Welding parameters are analyzed to determine major effective factors, and prediction equations of tensile shear and cross tension strengths are developed by the regression model with the second polynomial function of thickness, tensile strength and nugget ratio. And, the application limit of predicted models is established from investigation of data with high error.

목차 (Table of Contents)

• Abstract
• 1. 서론
• 2. 점용접 인장강도시험
• 3. 점용접 전단/십자 인장강도 예측 모델
• 4. 결론
• References