DRIVA

DRIVA – CAE For Flexible Multibody Dynamic Simulation

Simulate dynamic behaviour of drivetrain and the performance of components under variable loading.

DRIVA is a new and innovative solution for the full modelling and dynamic analysis of complete drivetrains.

Based on a full six degrees of freedom flexible multibody dynamics approach, DRIVA is the first solution designed specifically for the analysis of highly time-dependent load conditions of geared mechanical systems.

Powerful multibody dynamic solver
Easily generate simulation models from designs and seamlessly update the design model without the need to reimport files
Rectify problems earlier in the design process

Overview

DRIVA enables a time-domain (transient) simulation of complete drivetrains using flexible multibody dynamics.

No need for additional, third-party products or creation of intermediate models
Enables the full modelling and dynamic simulation of complete drivetrains
Automatically generate models by selecting frequency ranges
Flexible multibody dynamics approach specialised for geared mechanical systems
Already use MASTA? Use your existing MASTA models in DRIVA
Uses the powerful rating methods already in our market leading MASTA software
Conduct ratings for gears, bearings and shafts against dynamic loading accurately – No other comparable solution on the market

DRIVA For Wind

‘DRIVA for Wind’ enables full modelling and dynamic simulation of complete wind turbine drivetrains in MASTA

Perform analyses and obtain results required for GL2012 and GL2010 guidelines

Use full drivetrain model from blades to generator including a fully detailed gearbox model and complete flexibility of all components.

Model and simulate full wind turbine drivetrain from the blades to the generator response

Identify and Qualify all Drivetrain Resonances

Generation and display of Campbell diagrams
3D display of mode shapes including visual indication of strain and kinetic energies
Investigate excitations due to gear meshes in the frequency domain using NVH analysis

Load-Increasing Resonance Analysis

Perform time-stepping multibody dynamics (MBD) simulation of the whole drivetrain to obtain dynamic response of components to any source of excitation
Obtain load increasing resonant forces from results

Investigation of Transient Dynamic Loading

Wind turbine certification bodies that adhere to DNV GL guidelines (formerly Germanischer Lloyd – GL) recommend that the simulation model of the full drivetrain be used to analyse transient dynamic loading caused by extreme load cases for:

Emergency Stops
Grid Loss
Gusts

Such transient dynamic loading can be fully investigated using Wind Turbine Drivetrain Dynamics (DRIVA for Wind)

DRIVA For Engines

‘DRIVA for Engine’ enables modelling and dynamic simulation of transient torque changes within an engine and the consequent effects on component lifetime.

The loading of whole engine drivetrain is highly dynamic and traditional static rating methods are widely inaccurate.

DRIVA for Engine combines a dynamic system model with gear and bearing ratings for full component-loading time history.

Predict Dynamic Engine Torques

DRIVA predicts dynamic torques during engine operation taking into account the complex internal damping that occurs in the drivetrain.

Component Rating

Generate inertia-adjusted load cases for accurate prediction of component damage / lives arising from complex dynamic component loading that occurs in the engine drivetrain

Other Applications

Drivetrain shifting dynamics and shift quality vs. control strategy
Drivetrain compatibility between clutch, transmission, prop shaft and axle etc.; transmitting of torsional vibration
NVH: Gear rattle analysis
Engine gear trains for timing etc., dynamic crank loads. New engine arrangements, future integration of engine & gearbox
Dynamic loading of transmissions, e.g. driveline of off-road vehicles
Bespoke client analysis, etc.

Get in touch with us today for more information.