1. FEA of Vehicle Front Stabilizer Bar & Airfoil Design (Final Project) Name: Antonio Sevilla & Sanh Si Course: ME 272 FEA Professor: Jose Granda Date: 12-20-06

2. Objectives The objective was to simulate a crash test on a vehicle colliding with a fixed wall at 50 mph and analyze the stress distribution of the Front Right Stabilizer Bar during the impact. The objective was to simulate a crash test on a vehicle colliding with a fixed wall at 50 mph and analyze the stress distribution of the Front Right Stabilizer Bar during the impact. Additionally, we will also test an airfoil under different loads to see how the stress distribution changes with respect to the forces that are being applied. We will apply forces to the leading edge of the airfoil to simulate air resistance. Additionally, we will also test an airfoil under different loads to see how the stress distribution changes with respect to the forces that are being applied. We will apply forces to the leading edge of the airfoil to simulate air resistance.

3. Model Vehicle Body The vehicle was created on Solidworks and implemented into Nastran 4D. The vehicle was created on Solidworks and implemented into Nastran 4D. The material for the Vehicle Body is steel with an ultimate strength of 6.5e4 psi. The material for the Vehicle Body is steel with an ultimate strength of 6.5e4 psi.Airfoil The airfoil was created using Solidworks and implemented into Nastran 4D. The airfoil was created using Solidworks and implemented into Nastran 4D.

4. Model Suspension System The suspension system was also created on Solidworks and implemented into Nastran 4D. The suspension system was also created on Solidworks and implemented into Nastran 4D. The system consists of Stabilizer Bars, Steering Knuckles, Strut Assemblies, Control Arms, and Tie Rods for each tire. The system consists of Stabilizer Bars, Steering Knuckles, Strut Assemblies, Control Arms, and Tie Rods for each tire. The material for the suspension system like the vehicle, is also steel with an ultimate strength of 6.5e4 psi. The material for the suspension system like the vehicle, is also steel with an ultimate strength of 6.5e4 psi.

5. Simulation: Stabilizer Bar Views of the system before the simulation. Views of the system before the simulation.

6. Simulation: Stabilizer Bar The impact created a maximum stress of 4.134e5 psi on the Front Right Stabilizer Bar, which is more than the ultimate strength (6.5e4 psi) of the material. Therefore, the component will fail during the impact. The impact created a maximum stress of 4.134e5 psi on the Front Right Stabilizer Bar, which is more than the ultimate strength (6.5e4 psi) of the material. Therefore, the component will fail during the impact.

7. Simulation: Stabilizer Bar Views of the Stabilizer Bar during the impact with a maximum stress of 4.135e5 psi. Views of the Stabilizer Bar during the impact with a maximum stress of 4.135e5 psi.

8. Results: Airfoil Pressure distribution on airfoil at F=500 lbf (left). Pressure distribution on airfoil at F=500 lbf (left). Pressure distribution on airfoil at F=1000 lbf (right). Pressure distribution on airfoil at F=1000 lbf (right). As the force on the leading edge is increased, the pressure distribution begins to shift from the leading edge, to the trailing edge. As the force on the leading edge is increased, the pressure distribution begins to shift from the leading edge, to the trailing edge.

9. Results: Airfoil Pressure distribution on airfoil at F=1500 lbf (left). Graph of force vs maximum Von Mises Stress.

10. Conclusions The objective was to simulate a vehicle colliding into a wall and analyze the stress distribution on the Front Right Stabilizer Bar made of steel. The models were created in Solidworks. Then the system was simulated and analyzed on Nastran 4D. An FEA was performed and the data showed a maximum stress of 4.13X105 psi on the Stabilizer Bar during the impact and was enough for it fail. The objective was to simulate a vehicle colliding into a wall and analyze the stress distribution on the Front Right Stabilizer Bar made of steel. The models were created in Solidworks. Then the system was simulated and analyzed on Nastran 4D. An FEA was performed and the data showed a maximum stress of 4.13X105 psi on the Stabilizer Bar during the impact and was enough for it fail. For the airfoil test the objective was to simulate air resistance to see how the stress distribution changes with respect to the force being applied. We found that as the force on the leading edge is increased, the pressure distribution begins to shift from the area of the leading edge closest to the base, to the trailing edge. The maximum Von Mises Stress at F=1500 lbf was found to be 1.16X10 3 kPa For the airfoil test the objective was to simulate air resistance to see how the stress distribution changes with respect to the force being applied. We found that as the force on the leading edge is increased, the pressure distribution begins to shift from the area of the leading edge closest to the base, to the trailing edge. The maximum Von Mises Stress at F=1500 lbf was found to be 1.16X10 3 kPa