Search results for "Multibody Dynamics"

showing 3 items of 3 documents

Optimal damping coefficient for a class of continuous contact models

2020

AbstractIn this study, we develop an analytical formula to approximate the damping coefficient as a function of the coefficient of restitution for a class of continuous contact models. The contact force is generated by a logical point-to-point force element consisting of a linear damper connected in parallel to a spring with Hertz force–penetration characteristic, while the exponent of deformation of the Hertz spring can vary between one and two. In this nonlinear model, it is assumed that the bodies start to separate when the contact force becomes zero. After separation, either the restitution continues or a permanent penetration is achieved. Therefore, this model is capable of addressing …

Control and OptimizationMaskinteknikk0211 other engineering and technologiesAerospace Engineering02 engineering and technology01 natural sciencesDamperContact forceMultibody DynamicsHertz0103 physical sciences010301 acoustics021106 design practice & managementMathematicsMechanical EngineeringMechanicsFunction (mathematics)Multibody systemComputer Science ApplicationsEffective mass (spring–mass system)VDP::Teknologi: 500ImpactSpring (device)Modeling and SimulationCoefficient of restitutionInnvirkningMultibody System Dynamics
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Modeling and Parameter Identification of Deflections in Planetary Stage of Wind Turbine Gearbox

2012

The main focus of this paper is the experimental and numerical investigation of a 750[kW] wind turbine gearbox. A detailed model of the gearbox with main shaft has been created using MSC.Adams. Special focus has been put on modeling the planet carrier (PLC) in the gearbox. For this purpose experimental data from a drive train test set up has been analyzed using parameter identification to quantify misalignments. Based on the measurements a combination of main shaft misalignment and planet carrier deflection has been identified. A purely numerical model has been developed and it shows good accordance with the experimental data.

Engineeringbusiness.industryDrivetrainExperimental dataMechanical engineeringControl engineeringFlexible bodiesTurbinelcsh:QA75.5-76.95Computer Science Applicationswind turbineControl and Systems EngineeringDeflection (engineering)PlanetModeling and SimulationTest setMultibody dynamicslcsh:Electronic computers. Computer sciencebusinessSoftware
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A ride comfort tyre model for off-highway vehicles

2014

Tyre modelling is a major challenge when using time domain multibody simulation models to evaluate ride comfort on off-highway commercial vehicles. Further, parameters for these big tyres are difficult to obtain and thus, commercial car tyre models are difficult to apply. In this research work, a simple vertical tyre model for off-highway ride comfort evaluation is suggested. A displaced volume approach has been developed and combined with the slip theory to yield a tyre model that can be characterised by only three parameters. Full scale measurements on a dump truck have been carried out. Force responses from measurements are compared to the simulation results. Acceleration responses and t…

TruckEngineeringMultibody dynamics simulationbusiness.industryMechanical EngineeringFull scaleMultibody simulationVehicle dynamicsWhole-body vibrationAutomotive engineeringVehicle designVibrationVehicle dynamicsOff-highwayRide comfortAutomotive EngineeringbusinessTyre modellingAll terrain vehiclesSlip (vehicle dynamics)International Journal of Vehicle Design
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