VALDYN

VALDYN

VALDYN

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 is focused on the critical aspects related to engines.

Key features

  • “Building block” structure allows modelling of virtually any valvetrain, from individual valvelines to complete systems incorporating crankshaft and camshafts
  • Modelling of drive systems, including gears, belts and chains

  • Data input using expressions involving case-varying parameters
  • Frequency domain solver including forced-damped solution of linear models
  • Dynamic and kinematic analysis of valvetrains
  • Modelling of variable valve actuation (VVA) and variable valve timing (VVT) mechanisms
  • Animated output in the time and frequency domains
  • Automatic plotting of results
  • 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 Ricardo and third-party programmes, such as Simulink

Relevant resources

Correlation of VALDYN link-by-link chain modeling

Correlation of VALDYN link-by-link chain modeling

This paper covers measurements taken on the timing drive of a fired V6 engine... Download
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An analytical process to minimise gear rattle risk

An analytical process to minimise gear rattle risk

This presentation introduces gear rattle risk evaluation throughout the complete... Download
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Valvetrain friction - modeling, analysis and measurement of a high performance engine valvetrain system

Valvetrain friction - modeling, analysis and measurement ...

This presentation covers how valvetrain friction makes a significant contribution... Download
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Low-friction engineered surfaces

Low-friction engineered surfaces

This presentation covers the role of friction and wear in transportation and... Download
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Dynamic analysis of a valvetrain system and integrating for 3D structural analysis

Dynamic analysis of a valvetrain system and integrating f...

This is dynamic analysis of a valvetrain system in VALDYN integrated with FEARCE... Download
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Simulation and analysis drives success

Simulation and analysis drives success

Ricardo delivered the upgraded engine, driveline and exhaust of the BMW K1300... Download
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