On MSC Adams Vehicle Modeling and its Applications to Dynamics Performance Evaluation

Transcription

1 On MSC Adams Vehicle Modeling and its Applications to Dynamics Performance Evaluation K. Uehara NISSAN Motor CO., LTD

2 Digital Development for Vehicle Dynamics Performance 1 Provide Suspension MSC Adams models, tools, data management environment to suspension design engineers and help them to clear the suspension K & C targets 2 Validate vehicle handling and ride performance by full vehicle digital tests 3 Provide CAE application to vehicle dynamics performance study Digital Development 2

3 Digital Development of Vehicle Dynamics Performance Digital Development Process Digital Test Standards Project Schedule Modeling Evaluation Data Order Components Vehicle Setting Handling & Ride Tests Body P/T Tire Result Sheet output Model Release, Evaluation Tools Data Management output DR/Reports 3

4 Digital Development of Vehicle Dynamics Performance Five Basic Concepts 1. Integrated Modeling 2. Consistent Evaluation 3. Common Operation Base 4. Virtual Test in 3 Phases 5. Continue Development

5 Digital Development of Vehicle Dynamics Performance 1. Integrated Modeling 5

6 Digital Development of Vehicle Dynamics Performance 2. Consistent Evaluation Part Part Low Level Component Component Steady Steady State State Transient Transient Limit Limit State State High Level Suspension K & C in details Relationship among Steady State Cornering... 6

7 Digital Development of Vehicle Dynamics Performance 3. Common Operation Base Design Routine work Test Analysis System Development Advanced Research MSC Adams/Nissan Users: Core Team Analysis Engineers Design & Test Engineers 7

8 Digital Development of Vehicle Dynamics Performance 4. Separation of virtual testing in three phases Provide Base Vehicle Model Virtual Test Prototype Making Room Laboratory (Equipment) Room Bench Test Room and PG Build Vehicle Assembly Set Test Conditions Virtual Testing Execution Set Vehicle Weight & Height Set Alignment Set Sensors Set equipment for specific tests Set tires ( tire model, data, road ) Set the data property for specific tests 8

9 Digital Development of Vehicle Dynamics Performance 5. Continue Development & Continue Improvement Routine Work Provide Tools Provide Needs System Development Advanced Research Provide Methods 9

10 Digital Development of Vehicle Dynamics Performance Analysis Examples 1. Steering Effort 2. Ride Comfort 3. Country Road Drive 4. Cross-Wind Stability 5. Co-Simulation with Matlab 6. Stability of Trailer Towing 10

11 igital Development for Vehicle Dynamics Performance Steering Effort Handling Effort 操 舵 角 vs. - 操 Handling 舵 力 Angle Handling 操 舵 力 Effort Test 実 験 解 CAE 析 操 舵 角 Handling Angle 操 舵 角 - 操 舵 力 Handling Effort 操 舵 力 Test 実 験 解 析 CAE Handling 操 舵 角 Angle 11

12 igital Development for Vehicle Dynamics Performance Ride Comfort Shaker 前 輪 同 相 ±0.5m m Gain ケ イン Wheel バネ 下 フロア 運 転 席 実 験 バネ 下 実 験 フロア 運 転 席 Frequency (Hz) Floor 1 10 周 波 数 [Hz]

13 igital Development for Vehicle Dynamics Performance Country Road Drive 13

14 igital Development for Vehicle Dynamics Performance Cross-Wind Stability Wind Fan Yaw Rate Roll Angle Fr-Tire Lat Force Rr Tire Lat Force 14

15 igital Development for Vehicle Dynamics Performance Co-Simulation with Matlab on brake system Brake Signal Tire Rotation Speed Vehicle Speed 15

16 igital Development for Vehicle Dynamics Performance Stability of Trailer Towing 16

17 igital Development for Vehicle Dynamics Performance Conclusion In order to shorten the vehicle development cycle and to save cost, the design and validation of the vehicle dynamics performance powered by MSC Adams technology is implemented to achieve the optimal balance among the dynamics performances such as vehicle handling, ride comfort, NVH, road load and so on. The approach presented here is useful for the vehicle modeling and its applications to the vehicle dynamics performance evaluation. More innovation of vehicle modeling technology is expected in future practice. 17