Overhaul of Lotus Europa Front Suspension.


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Overhaul of Lotus Europa Front Suspension ME 450: Limited Component Examination Spring 2007 Exhibited by: Bart Sudhoff, Zachary Lightner, Jim Milligan, Brian Schludecker, David Giles Dr. Nema 4/30/2007 Synopsis and Presentation Upgrade Front Suspension Upper Control Arm
Transcripts
Slide 1

Upgrade 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

Slide 2

Summary & Introduction Redesign Front Suspension Upper Control Arm Top Speed Increase: 120 to 200 MPH Design Issues: New weight of auto because of expanded motor size New taking care of attributes

Slide 3

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

Slide 4

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

Slide 5

Theoretical Background Decomposition of model into firmness, power frameworks Solution in type of nodal relocation grid 4-hub tetrahedral component uprooting arrangement

Slide 6

Model Details Upper and Lower Control arms demonstrated utilizing Pro/E Constraints Fix – about the mounting openings Forces connected at rotating conjuncture

Slide 7

Model Details

Slide 8

Model Details

Slide 9

Model Details

Slide 10

Results 2” thick arm Stress - 20.06 MPa Deformation - .102 mm Safety Factor – Greater than 10

Slide 12

Results 1.75” thick arm Stress - 25.1 MPa Deformation - .128 mm Safety Factor – Greater than 5

Slide 14

Results 1.75” thick arm with alleviation Stress - 18.9 MPa. Twisting - .131 mm Safety Factor – Greater than 5

Slide 16

Results 1.5” thick arm with alleviation Stress - 24.4 MPa Deformation - .184 mm Safety Factor – Greater than 5

Slide 18

Results 1.5” thick arm with help Vertical Bump Stress - 3.82 MPa Deformation - .0229mm Safety Factor – Greater than 10 Rebound Stress - 14 MPa Deformation - .106mm. Wellbeing Factor – Greater than 10

Slide 21

Conclusion Chose 1 ½” control arm with help cuts Passed variable of security tests has suitable distortion Will permit au

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