Using this model, one can assess fatigue resistance of a car without conducting expensive experiments. An associate professor from RUDN University created a mathematical model that describes all possible damages of spot welded joints caused by fatigue failure. The level of fatigue resistance can be measured experimentally, but it requires a lot of expendable supplies and a testing site with special equipment.
A vehicle body with damaged spot welded joints has lower level of vehicle crashworthiness. The vehicle body structure is the main load-bearing part among other parts of the car. Cyclic stress leads to the formation of micro-cracks, and after some time, spot welded joints fail. An article about this study was published in the Simulation Modelling Practice and Theory journal.Ī car on a bumpy road is subjected to different dynamic loads that causes fatigue failure. The results of the study can help measure fatigue resistance in vehicles more accurately. According to his computer simulation, low speed on bumpy roads can be more dangerous for a vehicle body than moderate. view moreĪn associate professor from RUDN University developed a computer model that describes all types of vehicle body damage caused by fatigue failure.
Image: An associate professor from RUDN University developed a computer model that describes all types of vehicle body damage caused by fatigue failure.
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