SwePub - search: WFRF:(Chaar Nizar)

Enumeration	Reference	Cover	Find
1.	Chaar, Nizar, et al. (author) Experimental and numerical modal analyses of a loco wheelset 2004 In: Vehicle System Dynamics. - 0042-3114 .- 1744-5159. ; 41:Suppl., s. 597-606 Journal article (peer-reviewed)abstract Wheelset structural flexibility is believed to have a major influence on the vehicle-track dynamics. Several studies have related the structural flexibility of the wheelset to fluctuations of wheel-rail forces, rail and wheel corrugation, etc. This paper reports part of an ongoing project that studies the effects of wheelset structural flexibility on the vehicle-track dynamics. The paper focuses on experimental and numerical modal analyses of a loco wheelset in the frequency range of 0-500 Hz. Major issues related to modal analyses and modelling of wheelset are presented along with respective results. The results from numerical modal analysis were in good agreement with those obtained from the experiment. In addition, the wheelset had fairly low eigenfrequencies. Reduced versions of the generated wheelset model will be used in coming work in on-track numerical simulations in order to determine the effects of wheelset structural flexibility on the vehicle-track dynamics. Results from these simulations will be validated against existing experimental on-track results.
2.	Chaar, Nizar (author) Wheelset structural flexibility and vehicle-track dynamic interaction 2004 Licentiate thesis (other academic/artistic)

Chaar, Nizar, et al. (author)
Experimental and numerical modal analyses of a loco wheelset
2004
In: Vehicle System Dynamics. - 0042-3114 .- 1744-5159. ; 41:Suppl., s. 597-606
Journal article (peer-reviewed)abstract
- Wheelset structural flexibility is believed to have a major influence on the vehicle-track dynamics. Several studies have related the structural flexibility of the wheelset to fluctuations of wheel-rail forces, rail and wheel corrugation, etc. This paper reports part of an ongoing project that studies the effects of wheelset structural flexibility on the vehicle-track dynamics. The paper focuses on experimental and numerical modal analyses of a loco wheelset in the frequency range of 0-500 Hz. Major issues related to modal analyses and modelling of wheelset are presented along with respective results. The results from numerical modal analysis were in good agreement with those obtained from the experiment. In addition, the wheelset had fairly low eigenfrequencies. Reduced versions of the generated wheelset model will be used in coming work in on-track numerical simulations in order to determine the effects of wheelset structural flexibility on the vehicle-track dynamics. Results from these simulations will be validated against existing experimental on-track results.

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