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International Journal of Automotive Technology 2008;9(2): 197-201. |
| FATIGUE DESIGN APPROACH FOR THE SPOT-WELDED T-TYPE MEMBER USING A SIMULATED SINGLE SPOT-WELDED JOINT |
| D. H. BAE, G. Y. LEE, S. K. PARK |
| Sungkyunkwan University |
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| ABSTRACT |
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In order to develop a fatigue design method for actual railroad car and commercial vehicle body structures using the fatigue data of simulated single spot-welded lap joints, we first analyzed the stress distribution and evaluated fatigue strength of spot-welded T-type members that are the components of actual railroad car and commercial vehicle body structures. Next, fatigue design approach of these members using the fatigue data of single spot-welded lap joints was investigated. From our results, we found that, even though there was a quantitative difference of fatigue strength between the single spot-welded joint and the actual members over the same number of fatigue cycles, through the use of appropriate correction, the fatigue design criterion of actual spot-welded members, such as those used in railroad car and commercial vehicle body, can be predicted using the fatigue strength of single spot-welded joint. |
| Key Words:
Fatigue design, Spot welded T-type member, Single spot welded joint, Fatigue strength, Fatigue design criterion, Stress distribution |
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