Hybrid Optimization Methodology for Flexplate of Automatic Transmission

2020-01-0916

04/14/2020

Event
WCX SAE World Congress Experience
Authors Abstract
Content
For Automatic transmission application, crankshaft torque is transferred to torque converter through flex plate. As the flex plate has no functional requirement of storing energy as in case of Manual Transmission (MT) flywheel, flex plate design can be optimized to great extent. Flex plate structure must have compliance to allow the axial deformation of torque convertor due to ballooning pressure generated inside the converter. Flex plate experiences dynamic torque and centrifugal forces due to high rotational speed. It should have compliance to accommodate the assembly misalignments with torque convertor in both axial and radial directions. In this paper, sequential and hybrid optimization techniques are described to optimize the flex plate design with stress, stiffness and mass as design constraints. The load path, corrugation length and axial stiffness of flex plate captured accurately using this hybrid optimization. The variation of shape, size, orientation and number of holes are based on the load path and axial stiffness of flex plate. The results show that 35 % of weight reduction is achieved with original design and it meets all design requirements in product development.
Meta TagsDetails
DOI
https://doi.org/10.4271/2020-01-0916
Pages
7
Citation
Gandhi, V., Yadav, V., K, K., and Bidre, A., "Hybrid Optimization Methodology for Flexplate of Automatic Transmission," SAE Technical Paper 2020-01-0916, 2020, https://doi.org/10.4271/2020-01-0916.
Additional Details
Publisher
Published
Apr 14, 2020
Product Code
2020-01-0916
Content Type
Technical Paper
Language
English