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RomaxDesigner Application Note No. 635-AN-R2-Design Analysis and Optimisation of anAutomotive Transaxle usingRomaxDesignerA Case StudyFFor more information on RomaxDesigner, contact your Romaxrepresentative orRomax Technology Limited, Rutherford HouseNottingham Science & Technology ParkNottinghamshire, NG7 2PZ, England.Tel: +44 (0)115 951 88 00, Fax: +44 (0)115 951 88 01 E-mail: info@romaxtech.comDesign Analysis and Optimisation of an Automotive Transaxleusing RomaxDesignerRomaxDesigner Application Note© 2000 Romax Technology Ltd, UKDocument: 635-AN-R2- Design Analysis andOptimisation Automotive Transaxle.v1Issue: 1Date: 17 May 04Page 2 of 84CONTENTSSummary1. Introduction2. Stages in Transmission Design and AnalysisOptimisation2.1 Description of the Design Process2.2 What software tools will be used at each stage?2.2 The Structure of this Case Study3. Analysis of System Loads and Torques3.1 Definition of Component Properties3.2 Definition of Transmission Layout3.3 Definition of the Loads of the Transmission3.4 Calculation of the Loads on the Individual Components4. Component Reliability4.1 Calculation of Duty Cycle Lives for Bearings and Gears4.1.1 The Shaft/Bearing Static Analysis4.1.2 Gear Rating4.2 Selection of Bearings and Optimisation of Gear Macro-Geometry for Reliability4.2.1 Selecting a Bearing for Improved Performance4.2.2 Improving Bearing Performance by reducing Shaft Deflection4.2.3 Optimisation of Gear Macro-Geometry for ReliabilityDesign Analysis and Optimisation of an Automotive Transaxleusing RomaxDesignerRomaxDesigner Application Note© 2000 Romax Technology Ltd, UKDocument: 635-AN-R2- Design Analysis andOptimisation Automotive Transaxle.v1Issue: 1Date: 17 May 04Page 3 of 845. Analysis of System Deflections and Misalignments5.1 Detailed M...