Highlights:Expert-system cranktrain toolbox (piston, conrod, web, etc. ) for easy layout of any (I, V, W) cranktrainRigid, torsional and3D-bending analysis modesRigid kinematics, forces, torques, bearing loads Engine unbalanced forces moments, balance shafts3-D Block vibrations and mounting system analysis Crankshaft torsional vibrations (time and frequency domain)Viscous, rubber dampers, vibration isolators Crankshaft 3D bending: dynamic or quasi-static, crankshaft durabilityMain and conrod bearings analysis (orbits, MOFT, flow, temperature, friction) Predictive friction models for bearings, rings, pistonCranktrain Design AnalysisCranktrain Dynamics, Balance, Mounts and Bearings GT-SUITE performstorsional dynamic analysis of cranktrains in both time and frequencydomains. This analysis mode is used to model torsional vibrations of the crankshaft to recover maximum torsional displacements, strains, stresses etc. and to identify and eliminate any unwanted resonances. Dynamometer couplers, viscous and elastomer dampers, vibra-tion isolators and accessory drives can be accounted for.GT-SUITE offers a complete range of methods and models for the analysis of cranktrain systems and crankshafts in order to address balance, vibration, friction/lubrication, integrity and durability issues, to study the effect of operating parameters and design tradeoffs.GT-SUITE cranktrain models are constructed using elements of a cranktrain toolbox with many ease-of-use features and “expert system” intelligence which automates building of a consistent model. The same model can be used for rigid, torsional or 3D-bending analysis.AdvancedFeatures and Applications:Elastomer damper model based on Maxwell solid approach:consistent treatments in both time and freq. domainsAutomatic extraction of equivalent beam compli-ances of crankwebs (for 3D bending) from 3D FEA static results3D stress, fatigue and crankshaft reliability analysis using 3D FEAunit-load stress recombinationSteady-state or transient simulations, start-stop6 ODE integrators including implicit schemes suitable for stiff bending dynamics. Fast runtimes.Seamless integration in GT-SUITE, with:• Timing drive (e.g. chain)• Valvetrain• Engine performance (GT-POWER)• Oil circuit /Lube system • Vehicle drivetrain (engine recoil, mounts) • Models, to account for system interactionsThese capabilities are included in everyGT-SUITE license applied during pre-processing, to extract properties of an equivalent beam-based model. Models of main and conrod bearings are integrated with cranktrain dynamics in the rigid, torsional or 3D-bending analysis modes. Mixed lubrication of oil films is modeled. Predictions include loads, orbits, MOFT and oil film extent, oil flow and temperature, friction torque and power loss. Bearing models can also be easily linked to a full lubrication circuit model.GT-SUITE integrated model of cranktrain, engine mounting system, and driveline vehicle dynamics is used to investigate driveability/comfort issues.。
