Static and dynamic analysis of a ladder frame truck chassis

Static and dynamic analysis of a ladder frame truck chassis

Truck chassis is a major component in a vehicle system. This work involves static and dynamics analysis to determine the key characteristics of a truck chassis. The static characteristics include identifying location of high stress area and determining the torsion stiffness of the chassis. The dynam...

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Main Author: Musa, Ismail
Format: Thesis
Language:English
Published: 2009
Subjects:
HE Transportation and Communications
TJ Mechanical engineering and machinery
Online Access:http://eprints.utm.my/id/eprint/11323/1/IsmailMusaMFKM2009.pdf
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id my-utm-ep.11323
record_format uketd_dc
institution Universiti Teknologi Malaysia
collection UTM Institutional Repository
language English
topic HE Transportation and Communications
TJ Mechanical engineering and machinery
spellingShingle HE Transportation and Communications
TJ Mechanical engineering and machinery
Musa, Ismail
Static and dynamic analysis of a ladder frame truck chassis
description Truck chassis is a major component in a vehicle system. This work involves static and dynamics analysis to determine the key characteristics of a truck chassis. The static characteristics include identifying location of high stress area and determining the torsion stiffness of the chassis. The dynamic characteristics of truck chassis such as the natural frequency and mode shape were determined by using finite element (FE) method. Experimental modal analysis was carried out to validate the FE models. Modal updating of the truck chassis model was done by adjusting the selective properties such as mass density and Poisson’s ratio. Predicted natural frequency and mode shape were validated against the experimental results. Finally, the modification of the updated FE truck chassis model was proposed to reduce the vibration, improve the strength and optimize the weight of the truck chassis. The major area of concern in the truck chassis was structural resonance at 52 Hz, experienced during the torsional and bending modes. Modifications to shift natural frequencies were proposed by increasing the thickness of the chassis center section by 2 mm and additional stiffener members located at the center of the base plate with a thickness of 10 mm. The overall modifications resulted in the natural frequency shifted by 13 % higher than the original value, increased the torsion stiffness by 25 % and reduced the total deflection by 16 %. The overall weight of the new truck chassis was increased by 7%.
format Thesis
qualification_level Master's degree
author Musa, Ismail
author_facet Musa, Ismail
author_sort Musa, Ismail
title Static and dynamic analysis of a ladder frame truck chassis
title_short Static and dynamic analysis of a ladder frame truck chassis
title_full Static and dynamic analysis of a ladder frame truck chassis
title_fullStr Static and dynamic analysis of a ladder frame truck chassis
title_full_unstemmed Static and dynamic analysis of a ladder frame truck chassis
title_sort static and dynamic analysis of a ladder frame truck chassis
granting_institution Universiti Teknologi Malaysia, Faculty of Mechanical Engineering
granting_department Faculty of Mechanical Engineering
publishDate 2009
url http://eprints.utm.my/id/eprint/11323/1/IsmailMusaMFKM2009.pdf
_version_ 1747814839190814720
spelling my-utm-ep.113232018-06-04T09:51:45Z Static and dynamic analysis of a ladder frame truck chassis 2009-09 Musa, Ismail HE Transportation and Communications TJ Mechanical engineering and machinery Truck chassis is a major component in a vehicle system. This work involves static and dynamics analysis to determine the key characteristics of a truck chassis. The static characteristics include identifying location of high stress area and determining the torsion stiffness of the chassis. The dynamic characteristics of truck chassis such as the natural frequency and mode shape were determined by using finite element (FE) method. Experimental modal analysis was carried out to validate the FE models. Modal updating of the truck chassis model was done by adjusting the selective properties such as mass density and Poisson’s ratio. Predicted natural frequency and mode shape were validated against the experimental results. Finally, the modification of the updated FE truck chassis model was proposed to reduce the vibration, improve the strength and optimize the weight of the truck chassis. The major area of concern in the truck chassis was structural resonance at 52 Hz, experienced during the torsional and bending modes. Modifications to shift natural frequencies were proposed by increasing the thickness of the chassis center section by 2 mm and additional stiffener members located at the center of the base plate with a thickness of 10 mm. The overall modifications resulted in the natural frequency shifted by 13 % higher than the original value, increased the torsion stiffness by 25 % and reduced the total deflection by 16 %. The overall weight of the new truck chassis was increased by 7%. 2009-09 Thesis http://eprints.utm.my/id/eprint/11323/ http://eprints.utm.my/id/eprint/11323/1/IsmailMusaMFKM2009.pdf application/pdf en public masters Universiti Teknologi Malaysia, Faculty of Mechanical Engineering Faculty of Mechanical Engineering 1. Dave Anderson and Grey Schede. Development of a Multi- Body Dynamic Modal of a Tractor – Semi trailer for Ride Quality Prediction. International Truck and Engine Corp. 2001. 2. I.M. Ibrahim, D.A.Crolla and D.C. Barton. Effect Of Frame Flexibility On The Ride Vibration Of Trucks. Department of Mechanical Engineering, University of Leeds LS2 9JT, U.K. August 1994. 3. Pomulo Rossi Pinto Filho. Automotive Frame Optimization. Universidade Federal de Uberlandia. November 2003. 4. Zaman @ Bujang, Izzudin and Abd. Rahman, Roslan (2006). Application of Dynamic Correlation Technique and Model Updating on Truck Chassis. 1st Regional Conference on Vehicle Engineering & Technology, July 2006. 5. Lonny L. Thomson, Jon K. Lampert and E. Harry Law. Design of a Twist Fixture to measure the Torsional Stiffness of a Winston Cup Chassis. Department of Mechanical Engineering, Clemson Univ.1998. 6. Murali M.R. Krisna. Chassis Cross-Member Design Using Shape Optimization. International Congress and Exposition Detroit, Michigan. February 23-26,1998. 7. Wesley Linton. Analysis of Torsional Stiffness and Design Improvement Study of a Kit Car Prototype. Cranfield University, September 2002. 8. Marco Antonio Alves Jr, Helio Kitagawa and Celso Nogueira. Avoiding Structural Failure via Fault Tolerant Control – An Application on a Truck Frame. Detroit, Michigan November 18-20, 2002. 9. http://www-5.jeep/vensuite/vehiclecompare.jsp 10. Jeroen Deweer and Tom Van Langenhove. Identification of the Best Modal Parameters and Strategies for FE Model Updating. Society of Automotive Engineers, 2001. 11. Wesley Linton. Analysis of Torsion Stiffness and Design Improvement Study of A Kit Car Chassis Prototype. Cranfield University 2001-2. 12. Lonny L. Thomson, Pipasu H. Soni, Srikanth Raju, E. Harry Law. The Effects of Chassis Flexibility on Roll Stiffness of a Winston Cup Race car. Departmental of Mechanical Engineering, Clemson University, 1998. 13. “ME’sope VES. Demo Guide. Vibrant Technology Inc., Central of America, 2003. 14. N. Moller, S.Gade. Application of Operational Modal Analysis on Cars. SAE Paper 2003-01-1599, Noise & Vibration Conference and Exhibition Traverse City, Michigan, 2003. 15. C.Cosme, A.Ghasemi, J.Gandevia. Application of Computer Aided Engineering in the Design of Heavy-Duty Truck Frames. SAE Paper 1999- 01-3760, International Truck & Bus Meeting & Exposition, Detroit, Michigan, 1999. 16. “FEMtools Theoretical Manual. Dynamic Design Solution NV. Leuven, Belgium, 2002. 17. D.J.Ewins. Modal Testing: Theory and Practice. Research Studies Press Ltd., Hertfordshire, England, 1984. 18. Mohd Jailani Mohd Nor, Shahrum Abdullah, Nordin Jamaludin, Rozmi Ismail, Sallehuddin Mohamed Haris and Azli Arifin. The regional conference on advances in noise, vibration and comfort. Faculty of engineering, UKM, 2007. 19. Kenneth H.Huebner, Earl A.Thorton, Ted G.Byrom. The Finite Element Method For Engineers. Third Edition. 20. J.William Fitch. Motor Truck Engineering Handbook-Fourth Edition. SAE Inc., Warrendale, U.S.A, 1993.

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