Car Rollover Test Name: Antonio Sevilla Course: ME 272 FEA Prof. Jose Granda Date: 12-20-06.

Slides:

Advertisements

Similar presentations

Car Rolling 101 Beaudy Sheckler Jeff Powers ME 115 Professor Granda.

Advertisements

3 Wheel Car Turning characteristics of 3 wheel car By Paul Snyder.

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

Newton’s First Law of Motion Newton’s First Law of Motion.

Final Project “Investigation of Head Impact during an Inverted Drop Test” ME /18/06 Luke Gibbons.

S Bozzini* and D Friedman** *Safety Engineering International, Goleta, CA, USA **Center for Injury Research, Santa Barbara, CA, USA Presented by: Susie.

The National Crash Analysis Center The George Washington University Un-Constrained Models Comparison For Elastic Roof – Production Roof – Strong Pillars.

Solid Modeling at the University of Idaho Mechanical Engineering Department By: David Eld Jon Teske Nathan Petersen Theo White.

Page 19.  WHO MUST WEAR SEATBELTS: o All occupants Front Seat = Primary offense o Back Seat = Secondary Offense o RESPONSIBILITIES: o For passengers.

Change in Velocity You are probably most familiar with the velocity changes of a moving bus or car. Anytime a vehicle is speeding up or slowing down,

Paul Kendall Alex Perez.  Virtually all of a cars linear energy is transferred to the brakes as thermal energy.  The faster the car stops, the less.

Bond Graph Simulation of Bicycle Model

Chapter 4 Two-Dimensional Kinematics

M1114 Gunner / Driver Rollover Hazard Identification Video Story Boards HANG ON TO YOUR SEAT.

Finite Element Method Final Project “ Rear Suspension- Double A- Arms” Jaime Taha T.April 29 th 2003.

Chapter 2 Motion in One Dimension 2-1 Velocity and Displacement.

Stopping Distance and Reaction Time The driver in the car B sees the man A 40 m away at time t = 0. The velocity of the car changes according to the.

Finite Element Analysis of Mini Baja Frame Ariana L. Gonzalez April 29, 2003 MECE.

Graphing Motion Position vs. Time Stationary objects

BIKE FEA ME272 Professor Jose Granda By Zhiyu Gao Peter Nguyen.

Head on Collision By Fabiola Carrasco ME 143 Professor Granda December 25, 2006.

Controlling a 3D Vehicle with Simulink Jeff Bender ME

Lecture 15 – Drag Force & Circular Dynamics. Why is the drag force on a piece of paper so large?

COSMOS FloWorks Wind Tunnel Simulation

Speed vs. Time Graphs.

Head-on Collision ME115 FALL 2006 Final Project Instructor: Professor Granda By Blong Xiong Department of Mechanical Engineering California State University,

Mousetrap powered cars!. Why?? Mousetrap powered cars! Physics: Potential and kinetic energies and kinetic friction. Critical Skills: Critical thinking.

Circular Motion Uniform and Non-Uniform. Review Equations for Motion Along One Dimension.

ME 115: Dynamics of Machinery Manuel Leija Christian Reyes.

Vehicle Problem Stephen Moore ME270 Prof. Granda October 30, 2007.

Vehicle Suspension Explained by Bond Graph Modeling Justin Otero ME270 CSUS MSME Program Fall 07.

ME 143 Vehicle Design Automobile Roll Over Simulation Created By: Jeffrey H. Cho.

FINAL PROJECT FEA OF A WING OF FIGHTER PLANE

Abdelmageed Elmustafa

Do Now A car accelerates from 18.5 m/s to 46.1 m/s in 2.47 seconds. 1.Draw a picture. 2.Draw a motion diagram for the car. 3.Determine the acceleration.

Kinematics.  Distance – the total measured path that an object travels. (scalar)  Displacement – the measured straight line distance from when the object.

What is acceleration? – Probably heard it mean: “the process of speeding up” – More specifically: the rate at which velocity changes. Remember that velocity.

Impulse and Momentum Unit 9. Impulse Application of force during a small amount of time Application of force during a small amount of time Applies to.

Chapter 3 Orthographic Projection. TOPICS Object representation Glass box concept Line convention Orthographic projection of point, line, plane, surface.

ME-115 SOLVE 16-9 USING WORKING MODEL 2D PROF. J. GRANDA CSU, SACRAMENTO November 13, 2007 PRITPAL SINGH.

Natural Laws (DE. 4). How Laws of Nature Affect Vehicle Balance & Weight Load Transfer Gravity Kinetic Energy MomentumInertia.

Speed & Following Distance Transportation: Ch. 1, Act. 2.

The Georgia Police Academy

Vehicular Stopping Distance

VEHICLE COLLISION SIMULATION FROM POLICE REPORT

ME 115 Final Project Truck Jump

HONORS PHYSICS DAY 28 Here we go! Today: HW Quiz on the last HW’s

Motion in Two Dimensions EQ: What is a projectile?

Start on the corner of your picture *(Not the corner of the paper)

ME 115: Dynamics of Materials

Nick Filice ME 143 Prof. Granda

Car Jumping ME 143 Zhiyu Gao.

Projectile Motion.

Pictures and cars.

Projectile Motion.

Projectile Motion.

Motion Unit Miss McDonald Science 8

Chapter 1 Introduction.

Motion in a Straight Line

Motion in Two Dimensions EQ: What is a projectile?

MAY Grab the paper and your folder from the side counter.

Aim: How do we explain centripetal motion?

Experiment on a Collision of Bicycle with a Vehicle

Projectiles The only force acting on a projectile is the force due to gravity (weight).

Bell Work: Acceleration

Motion Section 3 Acceleration

6) gas pedal, brakes; steering wheel 16) speed 17) acceleration

Projectile Motion (Two Dimensional)

Presentation transcript:

Car Rollover Test Name: Antonio Sevilla Course: ME 272 FEA Prof. Jose Granda Date:

Problem Statement To determine the velocity at which a vehicle must be traveling to completely rollover after hitting a curve sideways. To determine the velocity at which a vehicle must be traveling to completely rollover after hitting a curve sideways.

Parameters Test vehicle was constructed in Solidworks and then the model was transferred to Visual Nastran 4D for analysis. Test vehicle was constructed in Solidworks and then the model was transferred to Visual Nastran 4D for analysis. A curb was placed in front of vehicle to get the vehicle to rollover. A curb was placed in front of vehicle to get the vehicle to rollover. Curb dimensions are 6” X 10” X 190” (H x W x L). Curb dimensions are 6” X 10” X 190” (H x W x L). A velocity was applied to the center of mass of the vehicle. A velocity was applied to the center of mass of the vehicle. Vehicle mass: 2000 lbm Vehicle mass: 2000 lbm Coefficient of friction:.5 Coefficient of friction:.5

Simulation at V=15 mph Click on the picture (If video doesn’t play you can find the simulations in the video folder.)

Simulation at V=20 mph (If video doesn’t play you can find the simulations in the video folder.)

Simulation at V=25 mph (If video doesn’t play you can find the simulations in the video folder.)

Results From the simulations we can see that at V= 15 mph, the car only tilts a little but it does not flip. From the simulations we can see that at V= 15 mph, the car only tilts a little but it does not flip. At V=20 mph, the car flips on its side and then lands back on its wheels. Therefore, full rollover is not accomplished. At V=20 mph, the car flips on its side and then lands back on its wheels. Therefore, full rollover is not accomplished. At V=25 mph, the car flips completely and lands on its roof. Complete rollover is accomplished. At V=25 mph, the car flips completely and lands on its roof. Complete rollover is accomplished.

Results: Graphs The following graphs show the velocity (top) and acceleration (bottom) of the vehicle vs time. The following graphs show the velocity (top) and acceleration (bottom) of the vehicle vs time. The results show how the Vx, Vy and Vz components of velocity and accel. change for a car traveling at 25 mph. The results show how the Vx, Vy and Vz components of velocity and accel. change for a car traveling at 25 mph.

Results: Von Mises Stress The max. Von Mises stress on the front right suspension on the vehicle at 25 mph was 8.60X10 5 psi. The max. Von Mises stress on the front right suspension on the vehicle at 25 mph was 8.60X10 5 psi. The picture to the right shows the suspension after the collision. The picture to the right shows the suspension after the collision.

Results: Von Mises Stress at 25 mph (left), 15 mph (top) and 20 mph (bottom)

Conclusion Given a vehicle with a mass of 2000 lbm, a coefficient of friction of.5 and a standard 6 inch curb, we find that it requires a velocity of 25 mph to cause the vehicle to completely rollover and land on its roof. Given a vehicle with a mass of 2000 lbm, a coefficient of friction of.5 and a standard 6 inch curb, we find that it requires a velocity of 25 mph to cause the vehicle to completely rollover and land on its roof.