Tehnički vjesnik, Vol. 21 No. 3, 2014.
Izvorni znanstveni članak
Stress and dynamic analysis of optimized trailer chassis
Mehdi Mahmoodi-k
; Department of Mechanical Engineering, Parand Branch, Islamic Azad University, Parand, Iran
Iraj Davoodabadi
; Scholl of Automotive Engineering, Iran University of Science and Technology, Tehran, Iran
Vinko Višnjić
; University Nord, University Centre Varaždin, 104. brigade 3, 42000 Varaždin, Croatia
Amir Afkar
; Faculty of Electrical, Mechanical and Construction Engineering, Department of Automotive Engineering, Standard Research Institute (SRI), Karaj, P. O. Box 31745-139, Iran
Sažetak
This paper discusses the stress and dynamic analysis of truck ladder chassis. At the first stage, in order to design a chassis for self-weight reduction, material type and cross section profiles of chassis are selected according to a maximum normal stress and maximum strain theories. Then, the stress analysis of truck chassis has been carried out by ABAQUS software to determine maximum transverse deflection and stress distribution. Results show that open U-shaped profiles are sufficient for weight reduction which can endure loads. In the next stage, the prediction of the vibrational properties of the chassis which is of great significance in determining the natural frequencies of the structure, are considered. For this purpose, the modal analysis has been accomplished by the finite element packaged ANSYS software, and natural frequencies and mode shapes have been determined. In the final stage, vehicle dynamic model is used to compare vehicle dynamic parameters and ride response in optimized and not optimized chassis conditions. Simulation results clarified that the optimized chassis increases the roll stability and improves ride conditions. Also, in order to avoid matching the natural frequency of the chassis with the excitation frequency, natural frequencies and vibration modes have been analysed during the loading conditions.
Ključne riječi
dynamic analysis; finite element; ride and handling; truck chassis; vibration analysis
Hrčak ID:
123333
URI
Datum izdavanja:
24.6.2014.
Posjeta: 11.806 *