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SAMTECH Group SAMTECH Group Automotive Applications Automotive Applications August 10, 2004 August 10, 2004 08/06/04, Page 1 This document is the property of SAMTECH S.A. SL/04/SAM/MKG_ppt/25an_a 08/06/04, Page 2 Hybrid model of a

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SAMTECH Group SAMTECH Group Automotive Applications Automotive Applications

August 10, 2004 August 10, 2004

SL/04/SAM/MKG_ppt/25an_a

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Hybrid model of a crankshaft

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Valve system

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Brake disk: thermal analysis

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Composite Structures Analysis

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Prototype Composite Subframe

Car Subframe (Automobile Blanc Cardon)

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Prediction of Pipe Shape

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Welding Spots Optimization

Welding spots idealized with small beam elements
Sizing optimization on a car body
Design variables: discrete beam properties
Objective:minimize number of welding spots
Constraints on given displacements
5000 variables

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Modeling of the Opel VECTRA

Car body modeling (OPEL Vectra)

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Car riding (30Km/h) over an
bstacle (25cm height)
Super-Element for large car

body model (shell)

Flexible mechanisms for suspension
Wheels, beams, springs, sliders,

spherical joints…

Car body and suspension modeling (OPEL)

Modeling of the Opel VECTRA

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Modeling of the Peugeot 406

Suspension modeling of Peugeot 406 (PSA)

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Non-linear beams for car body and stabilisator
Super-Element for rear axle
Mechanisms for suspension and steering:

hinges, spherical joints, bushings, rack and pinion…

Pacejka wheel model for ground interaction

Computation:

statics
0-5

straight

5-…steering wheel turned

Vehicle dynamics (Volkswagen)

Modeling of a VW car

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Elastomeric seal Computation

Deformable-deformable contact
Displacement piloting of gear lever
Hyperelastic material

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Transmissions & Gears

Gearing wheel modeling: detailed flexible-flexible contact/friction conditions SAMCEF Mecano global analysis of a gearing mechanism

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Transmissions & Gears

SAMCEF Mecano detailed model

f the Geneva mechanism

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Control head Bowed cable Blower Heater core Cases : scroll & distribution Evaporator Filter Air inlet case / recirc Temperature door Cases : distribution distribution valves Cam

Components

Cam of a car ventilation system (DELPHI Automotive)

Control head Bowed cable Control head Bowed cable Assembly on vehicle

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Cam of a car ventilation system

SAMCEF Mecano Analysis of a Cam Mechanism – DELPHI Automotive

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Optimization of Cam tracks

Flexible-flexible contact Cam Analysis … with Contact and Friction Design and optimization of Cam Profiles using BOSS quattro – DELPHI Automotive

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Advanced Topic: Mechatronic System Simulation

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Thank you for your attention ! We will be very pleased to answer to your questions.

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Simple scenario using SAMCEF Field

Creation of an engine model from CAD entities defined using the local parametric modeler of SAMCEF Field

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Hinge joint definition between connecting-rod and crankshaft

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Hinge joint definition between piston and connecting-rod

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Cylindrical joint definition between piston and cylinder

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Definition of pressure on pistons

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Mesh: Topological connections defining rigid bodies and accounting for kinematical joints

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Rigid Body Model Simulation Detection of a geometrical defect

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Back to the modeler Modification of cylinder length

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Update of rigid body model

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Rigid Body Model Simulation No interference any more

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Replacement of a rigid connecting rod by a flexible one

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Update of mesh with one flexible connecting-rod

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Automatic connection with rigid components

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Rigid-flexible Model Simulation Stresses superimposed on motion

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Rigid-flexible Model Simulation with flexible-flexible contacts

Stresses superimposed on Motion

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SAMCEF Field Notion of components library

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