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Couplings and Drives

Dynamic transfer of torques and motions

Couplings and drives blocks represent power transmission elements and systems such as springs, dampers, pulleys, and drives. To model the dynamic transfer of torques and motions, connect these blocks together just as you would assemble a physical driveline system.

Simscape Blocks

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Belt DrivePower transmission system with taut belt connecting two pulleys
Belt PulleyPower transmission element with frictional belt wrapped around pulley circumference
Chain DrivePower transmission system with chain and two sprockets
Flexible ShaftShaft with torsional and bending compliance
RodAxially flexible bar or cable
RopePhysical connection that enables tension transfer
Rope DrumPower transmission system with tightly wound rope around cylindrical drum
Shock AbsorberMechanism for damping translational vibrations
Torque ConverterViscous fluid coupling between rotating driveline shafts
Torsional Spring-DamperRotational spring and damper coupling with Coulomb friction, locking, and hard stops
Universal JointRotational coupling between two driveline shafts
Variable Ratio TransmissionDynamic gearbox with variable and controllable gear ratio, transmission compliance, and friction losses
Air SpringSealed translational air spring
Nonlinear Rotational DamperRotational damper based on polynomial or table lookup parameterizations
Nonlinear Rotational SpringTorsional spring based on polynomial or table lookup parameterizations
Nonlinear Translational DamperTranslational damper based on polynomial or table lookup parameterizations
Nonlinear Translational SpringTranslational spring based on polynomial or table lookup parameterizations
Rotational DamperFaultable linear rotational damper
Translational DamperFaultable linear translational damper
Variable Rotational DamperRotational damper with variable damping coefficient
Variable Rotational SpringRotational spring with variable spring stiffness
Variable Translational DamperTranslational viscous damper with variable damping coefficient
Variable Translational SpringTranslational spring with variable spring stiffness

Topics

Model a Variable Inertia

Model a time-varying inertia using a variable ratio transmission.

Model Driveshafts with Loss

Model damping due to viscous friction.

Model Drivetrain Noise

Model random noise in a drivetrain.

Model and Detect Drivetrain Faults

Model faults that disturb drivetrains.

Flexible Shaft

This example shows two flexible aluminum shafts modeled using a lumped parameter approach.

Shaft with Torsional and Transverse Flexibility

This example shows two flexible shafts that have torsional and transverse flexibility.

Torque Converter in Two-Mode Modeling

This example shows basic operations of a torque converter including lock-up clutch mechanism.

Best Practices for Modeling Pulley Networks

Learn about belt direction and using ropes and inertias in pulley networks.

Troubleshooting

Troubleshoot Driveline Modeling and Simulation Issues

Identify and eliminate issues that prevent your model from simulating to completion.

Troubleshoot Pulley Network Issues

Learn how to solve initialization and motion issues in pulley networks.

Featured Examples

Compound Pulley

Compound Pulley

A block and tackle system that is represented by the Belt Pulley and Rope blocks from the Simscape™ Driveline™ library. This compound pulley is rigged as a threefold purchase with two triple blocks. The system has a mechanical advantage of 6.

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Washing Machine Fault Analysis

Washing Machine Fault Analysis

Model a washing machine and introduce a fault in its operation. The machine water supply faults at a specific time and this example models the system response under this scenario. The electric motor switches off and the machine operation is aborted by discharging the partially filled outer drum.

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Simscape Driveline Documentation

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