基于AMESim整车NVH分析.ppt

* As part of the answer in front of the customer challenges, CSS is an open platform, and we have several partnerships to bring the right “best of breed” solutions to our customers. --------------------------------------------------------------------------- CFD / means Computational Fluid Dynamics MBS / means Multi Body System EM / means Electromagnetism PIDO / means Process Integration and Design Optimization * * * * Maximum of flexibility in every domains of interests. The complete design cycle of a vehicle or product could be done in AMESim, from CAD to ECU strategies completion. * Multi Domain skills. Multi industrial Teams have to communicate with the same tool. AMESim platform (ALL in one) and good and fast interfaces with other tools if necessary Multi domain multi skills system simulation and testing GM thermal lock-up modeling, Formula 1 carbon clutch, Siemens DCT, Renault AMT, TOYOTA LEXUS 6 Gears AT gearbox …. Thermal : Analysis of the increase of temperature of each disk surfaces. The result of torque transfer during a clutch slipping phase generates a friction power. This friction power produces a heat flow into metal capacity. The temperature of the metal capacities increase and exchange heat flow by conduction convection and forced convection with oil flow. It permits to design the quantity of oil flow to avoid the burning of the disk surface. The increase of temperature changes the friction coefficient, the oil viscosity and the normal forces (due to metal dilatation). Hydraulic : clutch control and gear shift control. Hydraulic network with pipes, switch valves and pressure regulators, pump (gyrotor). Mechanic : DCT uses concentric shafts or intermediate shafts. (not only primary and secondary). The flexibility of AMESim permits this kind of mechanic architecture Driveline : Tip in Tip out analysis, engine control end gearbox control to avoid peak of acceleration into the vehicle (X and Z accelerations) Copyright LMS International *