Experimental analysis of gyroscopic effect on vehicle vibration and accident potential

This thesis concerns with the experimental analysis of gyroscopic effect on vehicle vibration and accident potential. The objective of this thesis is to investigate the vehicle vibration, roll and yaw limits in various driving maneuver. The thesis describes the method to collect the vehicle’s centre...

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Main Author:	Noor Hazira, Mohamad Haidzir
Format:	Undergraduates Project Papers
Language:	English
Published:	2010
Subjects:	TL Motor vehicles. Aeronautics. Astronautics
Online Access:	http://umpir.ump.edu.my/id/eprint/1900/ http://umpir.ump.edu.my/id/eprint/1900/ http://umpir.ump.edu.my/id/eprint/1900/1/Noor_Hazira_Mohamad_Haidzir_%28_CD_4979_%29.pdf

id	ump-1900
recordtype	eprints
spelling	ump-19002015-03-03T07:53:28Z http://umpir.ump.edu.my/id/eprint/1900/ Experimental analysis of gyroscopic effect on vehicle vibration and accident potential Noor Hazira, Mohamad Haidzir TL Motor vehicles. Aeronautics. Astronautics This thesis concerns with the experimental analysis of gyroscopic effect on vehicle vibration and accident potential. The objective of this thesis is to investigate the vehicle vibration, roll and yaw limits in various driving maneuver. The thesis describes the method to collect the vehicle’s centre of gravity performance in term of moment and movement. The centre of gravity is assumed as the vehicle rigid body. Uncontrolled roll and yaw moment will cause different impact as it reach the limit depends on the contributed factors and condition. Due to variation of design, different geometry and external influences, study on roll and yaw will be different for every type of car. Thus, it is important to study and to address the relationship of centre of gravity performance and moment limit to reduce accident tendency due to uncontrolled roll and yaw moment. Three different driving maneuver had been evaluate for this study purpose which are steady state cornering with constant radius, load and lane change maneuver. The test is perform in Universiti Malaysia Pahang (UMP) and the data used for the analysis is obtained test using UMP Test Car which has been installed with MTi (gyroscope), Global Positioning System and DEWESoft software for data acquisition purpose. The post-processing method was performed using Flexpro and Microsoft Office Excel. The post-processing method to determine the roll and yaw angle is being done in Flexpro using the FPScript function. Finally, the results of analysis were represented in graph. From the graphs represented, some discussions are made according to the experiment performed. Comparisons of all the tests are made in achieving the conclusion. It is observed that the roll and yaw have its own limits based on the CG performance of the vehicle. The results concluded that the limit is strongly dependent to the turning radius and load variation. For steady state cornering, R3 is the limit for roll while R4 is the limit for yaw. As for the load variation, 50 kg load give the most uncontrolled roll and yaw. At 30 km/h for lane change test, the yaw is uncontrollable and roll is uncontrolled at 60 km/h. Improvements can be made by finding the exact location of CG that will give the exact limits of a vehicle. Finally, the methods and results for verification in this thesis are only applicable for passenger car. 2010-12 Undergraduates Project Papers NonPeerReviewed application/pdf en http://umpir.ump.edu.my/id/eprint/1900/1/Noor_Hazira_Mohamad_Haidzir_%28_CD_4979_%29.pdf Noor Hazira, Mohamad Haidzir (2010) Experimental analysis of gyroscopic effect on vehicle vibration and accident potential. Faculty of Mechanical Engineering, Universiti Malaysia Pahang. http://iportal.ump.edu.my/lib/item?id=chamo:51471&theme=UMP2
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Malaysia Pahang
building	UMP Institutional Repository
collection	Online Access
language	English
topic	TL Motor vehicles. Aeronautics. Astronautics
spellingShingle	TL Motor vehicles. Aeronautics. Astronautics Noor Hazira, Mohamad Haidzir Experimental analysis of gyroscopic effect on vehicle vibration and accident potential
description	This thesis concerns with the experimental analysis of gyroscopic effect on vehicle vibration and accident potential. The objective of this thesis is to investigate the vehicle vibration, roll and yaw limits in various driving maneuver. The thesis describes the method to collect the vehicle’s centre of gravity performance in term of moment and movement. The centre of gravity is assumed as the vehicle rigid body. Uncontrolled roll and yaw moment will cause different impact as it reach the limit depends on the contributed factors and condition. Due to variation of design, different geometry and external influences, study on roll and yaw will be different for every type of car. Thus, it is important to study and to address the relationship of centre of gravity performance and moment limit to reduce accident tendency due to uncontrolled roll and yaw moment. Three different driving maneuver had been evaluate for this study purpose which are steady state cornering with constant radius, load and lane change maneuver. The test is perform in Universiti Malaysia Pahang (UMP) and the data used for the analysis is obtained test using UMP Test Car which has been installed with MTi (gyroscope), Global Positioning System and DEWESoft software for data acquisition purpose. The post-processing method was performed using Flexpro and Microsoft Office Excel. The post-processing method to determine the roll and yaw angle is being done in Flexpro using the FPScript function. Finally, the results of analysis were represented in graph. From the graphs represented, some discussions are made according to the experiment performed. Comparisons of all the tests are made in achieving the conclusion. It is observed that the roll and yaw have its own limits based on the CG performance of the vehicle. The results concluded that the limit is strongly dependent to the turning radius and load variation. For steady state cornering, R3 is the limit for roll while R4 is the limit for yaw. As for the load variation, 50 kg load give the most uncontrolled roll and yaw. At 30 km/h for lane change test, the yaw is uncontrollable and roll is uncontrolled at 60 km/h. Improvements can be made by finding the exact location of CG that will give the exact limits of a vehicle. Finally, the methods and results for verification in this thesis are only applicable for passenger car.
format	Undergraduates Project Papers
author	Noor Hazira, Mohamad Haidzir
author_facet	Noor Hazira, Mohamad Haidzir
author_sort	Noor Hazira, Mohamad Haidzir
title	Experimental analysis of gyroscopic effect on vehicle vibration and accident potential
title_short	Experimental analysis of gyroscopic effect on vehicle vibration and accident potential
title_full	Experimental analysis of gyroscopic effect on vehicle vibration and accident potential
title_fullStr	Experimental analysis of gyroscopic effect on vehicle vibration and accident potential
title_full_unstemmed	Experimental analysis of gyroscopic effect on vehicle vibration and accident potential
title_sort	experimental analysis of gyroscopic effect on vehicle vibration and accident potential
publishDate	2010
url	http://umpir.ump.edu.my/id/eprint/1900/ http://umpir.ump.edu.my/id/eprint/1900/ http://umpir.ump.edu.my/id/eprint/1900/1/Noor_Hazira_Mohamad_Haidzir_%28_CD_4979_%29.pdf
first_indexed	2023-09-18T21:55:13Z
last_indexed	2023-09-18T21:55:13Z
_version_	1777414033745379328

Experimental analysis of gyroscopic effect on vehicle vibration and accident potential

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