redesign of lotus europa front suspension l.
Download
Skip this Video
Loading SlideShow in 5 Seconds..
Redesign of Lotus Europa Front Suspension PowerPoint Presentation
Download Presentation
Redesign of Lotus Europa Front Suspension

Loading in 2 Seconds...

play fullscreen
1 / 21

Redesign of Lotus Europa Front Suspension - PowerPoint PPT Presentation


  • 527 Views
  • Uploaded on

Redesign of Lotus Europa Front Suspension ME 450: Finite Element Analysis Spring 2007 Presented by: Bart Sudhoff, Zachary Lightner, Jim Milligan, Brian Schludecker, David Giles Dr. Nema 4/30/2007 Summary & Introduction Redesign Front Suspension Upper Control Arm

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'Redesign of Lotus Europa Front Suspension' - emily


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
redesign of lotus europa front suspension

Redesign of Lotus Europa Front Suspension

ME 450: Finite Element Analysis

Spring 2007

Presented by:

Bart Sudhoff, Zachary Lightner, Jim Milligan, Brian Schludecker, David Giles

Dr. Nema

4/30/2007

summary introduction
Summary & Introduction

Redesign Front Suspension Upper Control Arm

Top Speed Increase: 120 to 200 MPH

Design Issues:

New weight of car due to increased engine size

New handling characteristics

original design
Original Design
  • Built in 1970
  • 1470cc OHV 4 Cylinder Engine – 78HP
  • Front Wheel Drive
  • 4-Speed Transmission
  • Curb Weight: 1320-1570lbs
  • Top Speed 120 MPH
new design
New Design
  • Engine: Lexus V8 4.0L Quad Cam
  • Transmission: Porsche 5-Speed
  • Suspension: New Design of Lower/Upper Control Arms, Springs, Shocks
    • Factor of Safety of 5
    • Light Weight
    • Minimal Deformation
theoretical background
Theoretical Background
  • Decomposition of model into stiffness, force matrices
  • Solution in form of nodal displacement matrix
  • 4-node tetrahedral element displacement solution
model details
Model Details
  • Upper and Lower Control arms modeled using Pro/E
  • Constraints
    • Fix – about the mounting holes
    • Forces applied at ball joint
results
Results
  • 2” thick arm
    • Stress - 20.06 MPa
    • Deformation - .102 mm
    • Safety Factor – Greater than 10
results12
Results
  • 1.75” thick arm
    • Stress - 25.1 MPa
    • Deformation - .128 mm
    • Safety Factor – Greater than 5
results14
Results
  • 1.75” thick arm with relief
    • Stress - 18.9 MPa.
    • Deformation - .131 mm
    • Safety Factor – Greater than 5
results16
Results
  • 1.5” thick arm with relief
    • Stress - 24.4 MPa
    • Deformation - .184 mm
    • Safety Factor – Greater than 5
results18
Results
  • 1.5” thick arm with relief
    • Vertical Bump
      • Stress - 3.82 MPa
      • Deformation - .0229mm
      • Safety Factor – Greater than 10
    • Rebound
      • Stress - 14 MPa
      • Deformation - .106mm.
      • Safety Factor – Greater than 10
conclusion
Conclusion
  • Chose 1 ½” control arm with relief cuts
  • Passed factor of safety tests
  • has allowable deformation
  • Will allow car to go 200 mph