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Finite Element Analysis of Mini Baja Frame - PowerPoint PPT Presentation

Finite Element Analysis of Mini Baja Frame. Ariana L. Gonzalez April 29, 2003 MECE. Problem Statement. The Mini Baja Frame needs to withstand any collision that it might be subjected to as part of the testing process or competition.

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Finite Element Analysis of Mini Baja Frame

Ariana L. Gonzalez

April 29, 2003

MECE

• The Mini Baja Frame needs to withstand any collision that it might be subjected to as part of the testing process or competition.

• Four impact scenarios were analyzed to ensure the frame design will not fail.

• Front Impact

• Rear Impact

• Side Impact

• Roll Over

• The frame material is 4130 N Chromoly Steel with an outer diameter of 1.125” and wall thickness of 0.058” but was modeled as solid rods with1.125” diameter.

• Elastic Modulus 29 * 10^6 psi

• Poisson’s Ratio .25

• Yield Stress 1.16 * 10^5 psi

• The force of 7111 lbf was divided by four and applied to the four front most points of the car (1777.75 lbf).

• The rear most points of the car was constrained to prevent movement.

• The force of 9026 lbf was divided by four and applied to the four rear most points of the car (2256.5 lbf).

• The front most points of the car was constrained to prevent movement.

• The force of 9026 lbf was divided by four and applied to the right most points of the car (2256.5 lbf).

• The left most points of the car was constrained to prevent movement.

• The force of 7111 lbf was divided by two and applied to the top most points of the car (3555.50 lbf).

• The bottom of the car was constrained to prevent movement.

• The solid model can only be used to determine places where there is a stress concentration.

• The proposed alternative reduces the stress concentration at desired location.