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	Forward clutch -LC2, model 45415-23000, drum forward

Drivetrain engineering analysis and simulation capabilities at Southwest Research Institute (SwRI) include three-dimensional modeling of components and systems using software tools such as EASY5, ANSYS, Pro/ENGINEER, and Fluent.

Component analyses can predict life of the part and the maximum allowable loading conditions. This service is a vital part of the iterative nature of the design process and is essential to achieving an optimal design. Subsystems analyses can be used to evaluate component interactions.

System level analysis at the design stage is important to predict the interaction between subsystems, so that the design can be properly defined early in the design cycle.
 

	Graph showing system level analysis - 3/4 clutch slip at 2-3 UP-shift (WOT Drive)

The major time-consuming effort in analysis is proper modeling of the components and subsystems. SwRI has analysis experience in gear tooth meshing stress evaluation, clutch pack thermal analysis, first principal models to predict rolling element bearing, and bushing stresses. SwRI performs linear, nonlinear, and modal analyses to achieve project goals.

Modeling and Simulation Field Activities

• Drivetrain torsional vibration analysis

• Fuel economy simulations

• Vehicle performance simulation

• Reverse engineering

• Failure mode analysis

• Shift feel evaluations

• Slow shift transmission investigation

• Powerflow and kinematic analysis

• Pump, converter, and transmission modeling

• Gear tooth analysis

• Clutch pack thermal modeling

• Clutch pack kinematic model

• Physics-based pump model

For more information about analysis & simulation services capabilities at SwRI or how you can contract with SwRI, please contact Doug Fussner at dfussner@swri.org or

(210) 522-3972.
 

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Southwest Research Institute® (SwRI®), headquartered in San Antonio, Texas, is a multidisciplinary, independent, nonprofit, applied engineering and physical sciences research and development organization with 11 technical divisions.

September 30, 2008