English English
  • English English
CAE-Solutions

cae-solutions

  • Home
    CAE-Solutions
  • Training & Education
    • Ansys
      • ANSYS Training
      • Ansys Projects
    • LS-Dyna
      • LS-Dyna Training
      • LS-Dyna Projects
    • Altair HyperWorks
    • ADAMS
      • ADAMS/Car
      • ADAMS/View
      • ADAMS Projects
  • Projects
    • Automotive
      • Body&Structural
      • Vehicle Dynamic
    • Civil
    • Aerospace
    • Other Projects
    • Ongoing Projects
  • Download
  • About Me
    • Work Experience
    • Quality Policy
  • Contact Me
  • Home
  • Training & Education
    • Ansys
      • ANSYS Training
      • Ansys Projects
    • LS-Dyna
      • LS-Dyna Training
      • LS-Dyna Projects
    • Altair HyperWorks
    • ADAMS
      • ADAMS/Car
      • ADAMS/View
      • ADAMS Projects
  • Projects
    • Automotive
      • Body&Structural
      • Vehicle Dynamic
    • Civil
    • Aerospace
    • Other Projects
    • Ongoing Projects
  • Download
  • About Me
    • Work Experience
    • Quality Policy
  • Contact Me
  • You are here:
  • Home
  • Projects
  • Automotive
  • Vehicle Dynamic
  • Handling improvement for off-road vehicle

Article content

Handling improvement for off-road vehicle

Handling improvement for off-road vehicle

Post by: Javad Mehrmashhadi
04/06/2015
2614 views

In this project, a full vehicle model for an off-road vehicle was built in ADAMS/Car in order to improve steering effort based on suspension characteristics. 

 

I modeled the following templates in ADAMS/Car Template Builder:

  • Front solid drive axle
  • Read solid drive axle
  • Front pitman steering
  • Front antiroll bar
  • Rear antiroll bar
  • Body
  • Extra load on the body
  • Tire and wheel

The subsystems and whole vehicle model were created by the above templates in ADAMS/Car Standard Interface. The following methods were utilized to correlate and validate the model:

  • Comparing the Parallel Wheel Travel results with K&C test for front and rear suspension subsystems
  • Comparing the steering wheel rotation results with the real test reports
  • Employing COG test and defining the locations in whole vehicle model for handling test maneuvers.
  • Employing vehicle moment of inertia in whole vehicle model for handling test maneuvers.

The following simulations were performed to evaluate the axle performance:

  • Parallel wheel travel to check bump steer, camber steer etc.
  • Opposite wheel travel to check the minimum torsional stiffness, roll steer etc.
  • Steering simulation to check parking effort and the minimum power for steering box.
  • Constant Radius Cornering test to evaluate the understeering characteristics.
  • Lane change transient maneuver to evaluate the transient characteristics of lateral dynamic.
  • Steering with release test to check steering return-ability
  • Simulations concerning turn radius

To determine the fatigue life of the steering subsystems, I employed some useful simulations and test procedures including turn fully right, turn fully left and figure of 8.

The following specification of the vehicle model were improved and optimized:

  • Bump steer was decreased to smallest value
  • Camber was nearly unchanged during bump
  • Better operation in roll resulted in better understeering
  • Caster alteration was increase to compensate the return-ability of the steering.
  • Scrub radius, Caster arm and many more suspension characteristics were improved.

To optimize the dynamic performance of front and rear axle, I successfully accomplished different DOE studies using ADAMS/Insight by defining some adequate objectives in the suspension simulation.

Last modified on 11/06/2015

Share this article

Related items

  • Front Crash Analysis of Toyota Camry
  • Standard Guardrail Impact Simulation of Pickup and Sedan Vehicle
  • Drawing Analysis of a Wheel Rim with Fatigue Evaluation with Various Holes
  • Explicit simulation of Peugeot 206 seat sled test based on 74/408/EEC
  • Evaluation of the New Generation of Bumper Foam Stiffness on Pedestrian Injury

About Author

Javad Mehrmashhadi

Javad Mehrmashhadi

Javad Mehrmashhadi is the owner of CAE-Solutions.

Login to post comments

Latest Simulations

cache/resized/fd3df9be4f4655648bcbab5d820bff94.jpg
Waterjet cutting simulation using ALE simulation
10/06/2015 0 comment

In this research project, a deep hole was created in a piece work using water and abrasive material inside it. The ALE algorithm has been employed ...

  • cache/resized/d62b579d61676e01a84431025dabc08b.jpg
    Spiral Forming Simulation
    08/06/2015 0 comment
  • cache/resized/2ac8f1abfe32e124c3078102c1ca0c97.jpg
    Forging Simulation
    08/06/2015 0 comment
cache/resized/b386bff73369d452ad2f7ad1d5384493.jpg
Investigation of Tsunami Force on Superstructure Using Explicit Code
10/06/2015 0 comment

The amount of tsunami forces on large intercity bridges is investigated in this project. LS-Dyna explicit code has been employed for this research.

  • cache/resized/bb07145efdb745dfee6b8382560df610.jpg
    Explicit Impact Simulation of Concrete Confined With a Network of Rebar Steel
    08/06/2015 0 comment
  • cache/resized/691122589a513ed9d75a0b2f719e1452.jpg
    Study on Different Soil Explosion Resistance
    08/06/2015 0 comment
cache/resized/cd30d866ba0c8c94386d3dce48711645.jpg
Design and analyze a wind damper for space shuttle
03/06/2015 0 comment

In this project, a single-point mechanism was theoretically designed and checked its functionality in MSC.ADAMS in order to damp the wind forces in ...

cache/resized/6cba5ea28b9985c36427b91889dea447.jpg
Front Crash Analysis of Toyota Camry
11/06/2015 0 comment

I presented specification for Toyota Camry crash model.

  • cache/resized/9f16926c0d2d55a0db3b9ab2fd6a758d.jpg
    Standard Guardrail Impact Simulation of Pickup and Sedan Vehicle
    10/06/2015 0 comment
  • cache/resized/1665de44f43eeb9da111b1be191c4a01.jpg
    Explicit simulation of Peugeot 206 seat sled test based on 74/408/EEC
    08/06/2015 0 comment
cache/resized/703f2f02f407f18862b37675e78bd37e.jpg
Drawing Analysis of a Wheel Rim with Fatigue Evaluation with Various Holes
10/06/2015 0 comment

In this Scientific Collaboration, I have numerically investigated the forming process of an wheel rim.

  • cache/resized/4a6c4532b6a9e7144099ae4a312fa48c.jpg
    Design and simulation of a tracked robot in MSC.ADAMS/View
    04/06/2015 0 comment
  • cache/resized/90c7035d6bd4ce4d9a64dee967b215fe.jpg
    Design and Analysis of Rear Twist Beam Axle
    04/06/2015 0 comment
  • Home
  • Training & Education
  • Projects
  • Download
  • About Me
  • Contact Me

About Me


I have been doing simulation support on variety of projects within automotive and aerospace industries as well as on civil projects since 2004. Regarding my CAE skills using LS-Dyna, ANSYS, Altair Hyperworks and ADAMS I am well able to perform simulations on the following areas:
  • Crashworhiness, Pedestrian
  • Static & Dynamic and Coupled-Field
  • Friction Stir Welding (FSW)
  • Multi-body Dynamic

Please contact me if you need technical support in your projects by sending your request to mehrmashhadi@gmail.com

Javad Mehrmashhadi

Custom Link

  • Iranian Society of Automotive Engineering
Copyright © {2020} Javad Mehrmashhadi. All Rights Reserved
Designed by SmartAddons.Com
Template Settings
Reset

Styling

For each color, the params below will give default values
Blue Red Green Oranges Violet Cyan

Layout

Patterns for Layour Style: Boxed
pattern1 pattern2 pattern3 pattern4 pattern5 pattern6 pattern7 pattern8