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VALDYN
![](/static/4be5022b61e5f2cac02b393b7e6695f4/17baa/valdyn-hero.jpg)
VALDYN is a multi-body dynamic and kinematic simulation package specifically developed for valvetrain and drive-system analysis and cam and spring pack design.
With its detailed ‘building block’ models of engine components, it is significantly quicker to build models with VALDYN than with general-purpose dynamics tools and quicker to run because model refinement focuses on the critical aspects related to engines.
Key features
- ‘Building block’ structure enables modelling of virtually any valvetrain, from individual valve lines to complete systems incorporating crankshaft and camshafts
- Modelling of drive systems, including gears, belts and chains
- Dynamic bodies to include finite element (FE) models of guides, rockers, shafts and casings
- Embedded FE solver to run the FE dynamic reduction and back-substitution to evaluate FE stresses or vibrations
- Data input using expressions involving case-varying parameters
- Frequency domain solver including forced-damped solution of linear models
- Dynamic and kinematic analysis of valve trains
- Modelling of variable valve actuation (VVA) and variable valve timing (VVT) mechanisms
- Animated output in the time and frequency domains
- Results plotted automatically
- 3D frequency-response plots
- Plotting of mathematical expressions involving several outputs
- Run distribution using network computing resources to speed up multi-case simulations
- Links to ENGDYN and FEARCE for engine structural analysis
- Co-simulation with other Realis Simulation formerly Ricardo Software and third-party programmes, such as Simulink
Our insights
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