Modelling of elastoplastic, multi-scale and multi-contact problems: application to worm gears

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چکیده

A nonconventional application of worm gears exploits the irreversibility these power transmission devices in order to realize fast emergency braking. This can be used secure lifting devices. limiting factor design instantaneous braking systems is residual deformations worm/wheel contacting teeth, due impact between them at each stop. The prediction displacements requires solving an elastic–plastic, multi-scale and multi-contact problem. Original numerical tools were developed this study solve problem global local scales. method has been validated by comparing obtained results with 3D measurements on new deformed pairs. In predict issue gear after impact, a criterion based kinematic errors proposed. Applying gives maximal admissible torque for system operational impact.

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ژورنال

عنوان ژورنال: Mechanics & Industry

سال: 2022

ISSN: ['2257-7750', '2257-7777']

DOI: https://doi.org/10.1051/meca/2022003