VALDYN - gear dynamics

VALDYN can model gear systems at three levels of detail – from 2D involute contact, via 3D involute contact including tip relief, to full 3D using a finite element (FE) model of the tooth and tooth surface modification.

The FE model is generated automatically by FEARCE, and results can be back-substituted to obtain tooth displacement and stress. Spur and helical gears, including internal-tooth (epicyclic) gears, can also be modelled. When used in conjunction with VALDYN’s 3D rolling element bearing and dynamic body (FE) element, realistic gearbox models can be built to study refinement issues.

VALDYN can also import a SABR transmission model, which simplifies a model generation. From SABR/GEAR Tooth Contact Analysis outputs generating transmission error results can be imported as well as similar output from Ohio State LDP program. This data can be used providing solution speed of simplified models and accuracy of full 3D FE method.

Key features

• Optional FE tooth model
• Interaction of gears with complete engine
• Automatic model simplification for linear frequency domain analysis
• Results animation
• Comprehensive plotted output
• SABR model import
• SABR/GEAR and LDP transmission analysis results import