The windshield is transparent for most of the solar spectrum. Once the rays of the sun have passed the windshield they will be absorbed by the dark dashboard and heat it up to over 80°C (176°F), which must be compensated by the air conditioning. Now the dashboard itself starts radiating but at longer wavelengths in the thermal infrared and at these wavelengths the windshield is not transparent anymore. The project aims to study the temperature distribution and the structural deformation of a dashboard surface when part of it is subjected to direct sun light.
* only the first six pages of the project are presented here. If you are interested to study the rest of this document, please contact me via saeid.ghaffari@studenti.polito.it.
A Study on how Spot Welds Affect the Stiffness of a Car Body T-jointsaeid ghaffari
* only the first 6 pages of this project is presented here. If you are interested to study the rest of this document please contact me via saeid.ghaffari@studenti.polito.it.
With respect to the importance of the T-joint in a vehicle body strength, this project aims to study the joint torsional and bending stiffness in the two main directions. Furthermore, the influence of the number of spot welds on the stiffness of the joint will be analysed benefiting from Altair Hyperworks (Hypermesh FEA software).
Assessing the Aerodynamic Performance of a Formula SAE Model by means of CFD ...saeid ghaffari
A simplified race car model is used in this project to analyse the aerodynamic performance of a Formula SAE car by means of CFD simulation. First, the simulation workflow in Star-CCM+ will be demonstrated. Then, before applying volumetric controls and prism-layer mesh refinement to obtain more accurate results, tools to judge solution convergence are introduced.
*the first six pages of this project are presented here. If you are interested to study the rest of this document, please contact me via saeid.ghaffari@studenti.polito.it.
Assessing the torsional stiffness of a simplified ladder frame chassissaeid ghaffari
In this project we assess the torsional stiffness of a simplified ladder frame chassis in 3 different configurations regarding the connections between the cross members and longitudinal beams as well as the geometry of cross beams; simple cross beams, cross beams with cutted cross section and slotted cross beams are considered here. In order to obtain this goal a simplified model of the frame is built in Altair Hyperworks CAE software.
*only the first six pages of this project is presented here. If you are interested to study the rest of this work, please contact me via saeid.ghaffari@studenti.polito.it.
Double lane change maneuver (rigid vehicle model and non predictive driver mo...saeid ghaffari
*Only the first five pages are presented here. If you are interested to study the rest of this project, feel free to contact me via saeid.ghaffari@studenti.polito.it.
This project is studying a double lane change maneuver according to ISO 3888 standard using a rigid vehicle model and non-predictive driver model. The vehicle speed is 80 km/h and the lane change should be followed without touching the lanes. Furthermore, the width of the lanes are given as a function of the vehicle width. A driver model is adopted which is represented by servomechanism having the yaw angle Ψ as input and the steering angle δ as output which is proportional to the error between the effective Ψ and the angle of the trajectory. The transfer function between the output δ and the input Ψ in the Laplace domain is given by the driver gain, the delay of the driver and the Laplace variable. Hence, the stability of the vehicle can be analysed plotting Root loci for different values of driver gain and driver delay. Side slip angle of the vehicle β, steering angle δ and yaw rate as a function of the time will be derived while the trajectory is plotted in XY plane.
Analysis of the stability and step steer maneuver of a linearized vehicle mod...saeid ghaffari
Analysis of the lateral dynamics of the vehicle (stability and step steer manoeuvre) of a Linearized vehicle model with roll motion is done in this project. considering a high double wishbone suspension for front and a semi-trailing arm suspension for rear, firstly we derive the roll camber coefficient and camber stiffness benefiting from a multibody dynamics simulation (MSC ADAMS) validated with experimental values. On the other hand, cornering stiffness and aligning moment are computed through the tire diagrams using Carsim software. Root loci of the system with the objective of investigating the vehicle stability as a function of the vehicle speed is plotted with varying the speed V. Furthermore, a step steer manoeuvre will be performed in which the time history of the variables and the trajectory with respect to the rigid vehicle model will be compared. In the last part, the effect of suspension stiffness and damping variation on the vehicle stability will be examined.
*Only the first ten pages of the project is presented here; if you are interested to study the rest of this document, please do not hesitate to contact e via saeid.ghaffari@studenti.polito.it.
Stability analysis of a Rigid Vehicle Modelsaeid ghaffari
The lateral stability of a two axle vehicle with open loop control will be studied in this project. A 3 dof model is adopted to evaluate the curvature gain and the root loci as a function of the vehicle speed V. Moreover, the dynamic response of the vehicle considering the step steer manoeuvre will be analysed according to the ISO norm. The side slip angle and the yaw rate are evaluated as a function of time, while the trajectory of the center of gravity G of the vehicle with respect to the inertial reference frame (OXY Z) is plotted during step steer maneuver. Inasmuch as the change of cornering stiffness on tires due to the different condition are small, we cannot see the difference between the trajectories, shedding light on the steering angles, however, we can understand what is happening in various conditions. In this study, both the effect of traction force on the front and rear axle and transversal load transfer on the front and rear axle are investigated.
*only the first 10 pages of the main project are presented here. If you are interested to go through the rest of this document please contact me via saeid.ghaffari@studenti.polito.it.
A Study on how Spot Welds Affect the Stiffness of a Car Body T-jointsaeid ghaffari
* only the first 6 pages of this project is presented here. If you are interested to study the rest of this document please contact me via saeid.ghaffari@studenti.polito.it.
With respect to the importance of the T-joint in a vehicle body strength, this project aims to study the joint torsional and bending stiffness in the two main directions. Furthermore, the influence of the number of spot welds on the stiffness of the joint will be analysed benefiting from Altair Hyperworks (Hypermesh FEA software).
Assessing the Aerodynamic Performance of a Formula SAE Model by means of CFD ...saeid ghaffari
A simplified race car model is used in this project to analyse the aerodynamic performance of a Formula SAE car by means of CFD simulation. First, the simulation workflow in Star-CCM+ will be demonstrated. Then, before applying volumetric controls and prism-layer mesh refinement to obtain more accurate results, tools to judge solution convergence are introduced.
*the first six pages of this project are presented here. If you are interested to study the rest of this document, please contact me via saeid.ghaffari@studenti.polito.it.
Assessing the torsional stiffness of a simplified ladder frame chassissaeid ghaffari
In this project we assess the torsional stiffness of a simplified ladder frame chassis in 3 different configurations regarding the connections between the cross members and longitudinal beams as well as the geometry of cross beams; simple cross beams, cross beams with cutted cross section and slotted cross beams are considered here. In order to obtain this goal a simplified model of the frame is built in Altair Hyperworks CAE software.
*only the first six pages of this project is presented here. If you are interested to study the rest of this work, please contact me via saeid.ghaffari@studenti.polito.it.
Double lane change maneuver (rigid vehicle model and non predictive driver mo...saeid ghaffari
*Only the first five pages are presented here. If you are interested to study the rest of this project, feel free to contact me via saeid.ghaffari@studenti.polito.it.
This project is studying a double lane change maneuver according to ISO 3888 standard using a rigid vehicle model and non-predictive driver model. The vehicle speed is 80 km/h and the lane change should be followed without touching the lanes. Furthermore, the width of the lanes are given as a function of the vehicle width. A driver model is adopted which is represented by servomechanism having the yaw angle Ψ as input and the steering angle δ as output which is proportional to the error between the effective Ψ and the angle of the trajectory. The transfer function between the output δ and the input Ψ in the Laplace domain is given by the driver gain, the delay of the driver and the Laplace variable. Hence, the stability of the vehicle can be analysed plotting Root loci for different values of driver gain and driver delay. Side slip angle of the vehicle β, steering angle δ and yaw rate as a function of the time will be derived while the trajectory is plotted in XY plane.
Analysis of the stability and step steer maneuver of a linearized vehicle mod...saeid ghaffari
Analysis of the lateral dynamics of the vehicle (stability and step steer manoeuvre) of a Linearized vehicle model with roll motion is done in this project. considering a high double wishbone suspension for front and a semi-trailing arm suspension for rear, firstly we derive the roll camber coefficient and camber stiffness benefiting from a multibody dynamics simulation (MSC ADAMS) validated with experimental values. On the other hand, cornering stiffness and aligning moment are computed through the tire diagrams using Carsim software. Root loci of the system with the objective of investigating the vehicle stability as a function of the vehicle speed is plotted with varying the speed V. Furthermore, a step steer manoeuvre will be performed in which the time history of the variables and the trajectory with respect to the rigid vehicle model will be compared. In the last part, the effect of suspension stiffness and damping variation on the vehicle stability will be examined.
*Only the first ten pages of the project is presented here; if you are interested to study the rest of this document, please do not hesitate to contact e via saeid.ghaffari@studenti.polito.it.
Stability analysis of a Rigid Vehicle Modelsaeid ghaffari
The lateral stability of a two axle vehicle with open loop control will be studied in this project. A 3 dof model is adopted to evaluate the curvature gain and the root loci as a function of the vehicle speed V. Moreover, the dynamic response of the vehicle considering the step steer manoeuvre will be analysed according to the ISO norm. The side slip angle and the yaw rate are evaluated as a function of time, while the trajectory of the center of gravity G of the vehicle with respect to the inertial reference frame (OXY Z) is plotted during step steer maneuver. Inasmuch as the change of cornering stiffness on tires due to the different condition are small, we cannot see the difference between the trajectories, shedding light on the steering angles, however, we can understand what is happening in various conditions. In this study, both the effect of traction force on the front and rear axle and transversal load transfer on the front and rear axle are investigated.
*only the first 10 pages of the main project are presented here. If you are interested to go through the rest of this document please contact me via saeid.ghaffari@studenti.polito.it.
Due to recurrent lack of on time delivery of Drilling grid (made of a 2cm thick aluminium pad), 3D printing can potentially propose an alternative enlightened solution in 3D printing (topology optimization).
Speakers
Sébastien Haudrechy, Engineer, Airbus Group Aerospace
In my final year of University, for my research project, I had to find out which strategies would be the most effective when dealing with floods in the UK. The strategies that I chose also had to be feasible and sustainable. Various strategies were discussed and a conclusive strategy was constructed and recommended.
This presentation is a Users' Guide for the Computational Fluid Dynamics (CFD) framework One-Click CFD. This framework enables CFD analysis of vehicle such as racing cars by people with no prior experience in CFD.
The One-Click CFD framework is distribution by Khamsin Virtual Racecar Challenge - http://www.khamsinvirtualracecarchallenge.com - and is used as part of the 2015 Challenge.
Due to recurrent lack of on time delivery of Drilling grid (made of a 2cm thick aluminium pad), 3D printing can potentially propose an alternative enlightened solution in 3D printing (topology optimization).
Speakers
Sébastien Haudrechy, Engineer, Airbus Group Aerospace
In my final year of University, for my research project, I had to find out which strategies would be the most effective when dealing with floods in the UK. The strategies that I chose also had to be feasible and sustainable. Various strategies were discussed and a conclusive strategy was constructed and recommended.
This presentation is a Users' Guide for the Computational Fluid Dynamics (CFD) framework One-Click CFD. This framework enables CFD analysis of vehicle such as racing cars by people with no prior experience in CFD.
The One-Click CFD framework is distribution by Khamsin Virtual Racecar Challenge - http://www.khamsinvirtualracecarchallenge.com - and is used as part of the 2015 Challenge.
Thermo-Mechanical Analysis of Automotive Disc Brake Composite Rotorinventionjournals
The heat generated due to friction during braking operation causes several important negative effects on the brake system. It is then important to determine the temperature field of the brake disc. In the present work, a transient thermo-mechanical finite element analysis (FEA) is performed to determine the braking efficiency of a Carbon Ceramic disk brake and compared to a Glass Fiber (S-2) brakes. The aim of the work is to investigate the rise of the temperature of the disk brake under severe braking conditions and the stresses generated from it. The investigation will be done using ANSYS software. ANSYS is a powerful FE package used to determine stress, strain and heat transfer in complicated problems
International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
THERMAL & STRUCTURAL ANALYSIS ON DISC BRAKE ROTOR WITH DRAFTING USING CATIA ...NitinSuryawanshi12
Project consist of two types of analysis thermal , structural & VBA Programming.
Thermal analysis is done to check the thermal resistance of model Honda Unicorn 160.
Structural analysis is done to find the strength of the model.
VBA programming is used to automate drafting task.
What Does the PARKTRONIC Inoperative, See Owner's Manual Message Mean for You...Autohaus Service and Sales
Learn what "PARKTRONIC Inoperative, See Owner's Manual" means for your Mercedes-Benz. This message indicates a malfunction in the parking assistance system, potentially due to sensor issues or electrical faults. Prompt attention is crucial to ensure safety and functionality. Follow steps outlined for diagnosis and repair in the owner's manual.
Why Is Your BMW X3 Hood Not Responding To Release CommandsDart Auto
Experiencing difficulty opening your BMW X3's hood? This guide explores potential issues like mechanical obstruction, hood release mechanism failure, electrical problems, and emergency release malfunctions. Troubleshooting tips include basic checks, clearing obstructions, applying pressure, and using the emergency release.
Fleet management these days is next to impossible without connected vehicle solutions. Why? Well, fleet trackers and accompanying connected vehicle management solutions tend to offer quite a few hard-to-ignore benefits to fleet managers and businesses alike. Let’s check them out!
Comprehensive program for Agricultural Finance, the Automotive Sector, and Empowerment . We will define the full scope and provide a detailed two-week plan for identifying strategic partners in each area within Limpopo, including target areas.:
1. Agricultural : Supporting Primary and Secondary Agriculture
• Scope: Provide support solutions to enhance agricultural productivity and sustainability.
• Target Areas: Polokwane, Tzaneen, Thohoyandou, Makhado, and Giyani.
2. Automotive Sector: Partnerships with Mechanics and Panel Beater Shops
• Scope: Develop collaborations with automotive service providers to improve service quality and business operations.
• Target Areas: Polokwane, Lephalale, Mokopane, Phalaborwa, and Bela-Bela.
3. Empowerment : Focusing on Women Empowerment
• Scope: Provide business support support and training to women-owned businesses, promoting economic inclusion.
• Target Areas: Polokwane, Thohoyandou, Musina, Burgersfort, and Louis Trichardt.
We will also prioritize Industrial Economic Zone areas and their priorities.
Sign up on https://profilesmes.online/welcome/
To be eligible:
1. You must have a registered business and operate in Limpopo
2. Generate revenue
3. Sectors : Agriculture ( primary and secondary) and Automative
Women and Youth are encouraged to apply even if you don't fall in those sectors.
"Trans Failsafe Prog" on your BMW X5 indicates potential transmission issues requiring immediate action. This safety feature activates in response to abnormalities like low fluid levels, leaks, faulty sensors, electrical or mechanical failures, and overheating.
What Exactly Is The Common Rail Direct Injection System & How Does It WorkMotor Cars International
Learn about Common Rail Direct Injection (CRDi) - the revolutionary technology that has made diesel engines more efficient. Explore its workings, advantages like enhanced fuel efficiency and increased power output, along with drawbacks such as complexity and higher initial cost. Compare CRDi with traditional diesel engines and discover why it's the preferred choice for modern engines.
Ever been troubled by the blinking sign and didn’t know what to do?
Here’s a handy guide to dashboard symbols so that you’ll never be confused again!
Save them for later and save the trouble!
Symptoms like intermittent starting and key recognition errors signal potential problems with your Mercedes’ EIS. Use diagnostic steps like error code checks and spare key tests. Professional diagnosis and solutions like EIS replacement ensure safe driving. Consult a qualified technician for accurate diagnosis and repair.
In this presentation, we have discussed a very important feature of BMW X5 cars… the Comfort Access. Things that can significantly limit its functionality. And things that you can try to restore the functionality of such a convenient feature of your vehicle.
Things to remember while upgrading the brakes of your carjennifermiller8137
Upgrading the brakes of your car? Keep these things in mind before doing so. Additionally, start using an OBD 2 GPS tracker so that you never miss a vehicle maintenance appointment. On top of this, a car GPS tracker will also let you master good driving habits that will let you increase the operational life of your car’s brakes.
5 Warning Signs Your BMW's Intelligent Battery Sensor Needs AttentionBertini's German Motors
IBS monitors and manages your BMW’s battery performance. If it malfunctions, you will have to deal with an array of electrical issues in your vehicle. Recognize warning signs like dimming headlights, frequent battery replacements, and electrical malfunctions to address potential IBS issues promptly.
Core technology of Hyundai Motor Group's EV platform 'E-GMP'Hyundai Motor Group
What’s the force behind Hyundai Motor Group's EV performance and quality?
Maximized driving performance and quick charging time through high-density battery pack and fast charging technology and applicable to various vehicle types!
Discover more about Hyundai Motor Group’s EV platform ‘E-GMP’!
Thermal and thermo-structural analysis of a dashboard
1. Saeid Ghaffari
Professor: Alessandro Scattina
Automotive Engineering - A.Y. 2017-2018
Thermal and Thermo/Structural
Analysis of a Dashboard
Department of
Mechanical and
Aerospace Engineering
2. 2
Everybody knows the situation when a car has been parked in the sun.
Especially the van type cars with large windows become incredibly hot
inside so that it is almost not possible to touch the steering wheel. The
temperatures on the dashboard and the steering wheel can reach over
80°C (176°F), which has to be compensated by the air conditioning.
The windshield is transparent for most of the solar spectrum. Once the
rays of the sun have passed the windshield they will be absorbed by the
dark dashboard and heat it up to unpleasantly high temperatures. Now
the dashboard itself starts radiating but at longer wavelengths in the
thermal infrared and at these wavelengths the windshield is not
transparent anymore.
Department of Mechanical
and Aerospace Engineering
The problem in real world
Automotive Engineering - A.Y. 2017-2018 THERMAL AND THERMO/STRUCTURAL ANALYSIS OF A DASHBOARD
3. The proposed exercise concerns the thermal and thermo/structural analysis of a dashboard. Also the sun light in
parking conditions will be considered.
Purpose of the exercise
Starting from the supplied geometry, the discrete model must be obtained by using 2D shell elements. The
material properties of the polypropylene and steel used for the dashboard are summarized in table
MATERIAL
Young’s
Modulus
(GPa)
E
Poisson
Ratio
Density
(Kg/m3)
Thermal
Expansion
Coefficient
(1/°C)
A
Thermal
Conductivity
(W/m °C)
k
Heat
Transfer
Coefficient
(W/m2 °C)
h
Polypropylene 1.8 0.45 946 150 × 10-6 0.16 25.4
Steel 210 0.3 7800 1 × 10-5 73 40
3THERMAL AND THERMO/STRUCTURAL ANALYSIS OF A DASHBOARD
Department of Mechanical
and Aerospace Engineering
Department of Mechanical
and Aerospace Engineering
Automotive Engineering - A.Y. 2017-2018
4. Loading Conditions
The task of the exercise is to study the temperature distribution and the structural deformation of the dashboard
surface when part of it is subjected to direct sun light. It is suggested to reach the target following some
intermediate steps:
• to obtain the temperature on the dashboard due to
convection with the inner temperature of the cockpit.
• to apply a heat flux of 400 W/m2 to part of the
dashboard in order to simulate the sun light (heat
flows in the dashboard material by conduction).
• to define a coupled thermo-structural analysis and to
analyze the stress/strain distribution on thedashboard.
4
Department of Mechanical
and Aerospace Engineering
Automotive Engineering - A.Y. 2017-2018 THERMAL AND THERMO/STRUCTURAL ANALYSIS OF A DASHBOARD
5. In the start window click Optic Struct and import the file by clicking Import
solver deck import geometry. Then locate the file location and click
Import.
Steps for creating the model
5
Department of Mechanical
and Aerospace Engineering
Automotive Engineering - A.Y. 2017-2018 THERMAL AND THERMO/STRUCTURAL ANALYSIS OF A DASHBOARD
6. After importing the object, rename
the two parts as dashboard surface
and duct to easily recognise the
component on the panel.
6
Steps for creating the model
Department of Mechanical
and Aerospace Engineering
Automotive Engineering - A.Y. 2017-2018 THERMAL AND THERMO/STRUCTURAL ANALYSIS OF A DASHBOARD