محسن مرادي

Measuring the forces between the wheel and the rail is the most important indicator to eva‎luate the safety of a train. This measurement is very important to determine the maximum forces on the line in the vertical and horizontal direction And it can cause line failure, and there are explicit limitations in the standard. Current technologies include arrays of strain gauges that are mounted on the web wheel core based on a specific point arrangement And the elastic strain of these bodies are measured and processed by special tools and through laboratory calibration with specific forces between the measured strains and these forces, conversion coefficients and force calculation algorithm are obtained. The forces that are mutually transmitted in contact between the wheel and rail are measured by instrumented wheelset. instrumented wheelset, in addition to the variable force values, due to the rotation of the wheel, the position of the strain gauges also changes in relation to the contact forces. And this change according to the speed of the train can exceed 30 times per second or more. In this project, the goal has been to design the strain measurement system in the wheel, which has been done by two methods of using software analysis and conducting laboratory tests for the first time in Iran, and according to the results of the analysis and laboratory tests, there is a good agreement between There were results.

چرخ و محور اندازه گير , تماس بين چرخ و ريل , نيرو هاي تماسي , سيستم اندازه گيري

Mohsen moradi

habib alah molatefi