鉄道用低応力・低騒音軽量車輪の開発

概要

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Finite element method and boundary element method were applied to develop the low-stress and low-noise lightweight wheel. First, stress analyses for the existing wheels under the condition of drag braking and track loading were performed. Following these analyses, an optimization methodology was developed and applied, leading to the development of new plate shapes of wheel whose stresses generated were lower than that of conventional wheels. Candidate plate shapes were selected based on the analyses. Next, eigenvalue analysis and transient dynamic analysis were carried out for the wheels. At the same time to verify the analytical results, these wheels were manufactured and experiments were implemented. Finally, sound analyses were performed and results were compared with that obtained by field measurements. From this study, a new plate shape of lightweight railway wheel was obtained that reduces the radiated noise as well as the maximum stresses generated in the plate region.
2007-06-25