Methodology for bus structure torsion stiffness and natural vibration frequency prediction based on a dimensional analysis approach

Gauchía Babé, AntonioOlmeda Santamaría, EsterLópez Boada, María JesúsLópez Boada, BeatrizDíaz López, Vicente2023-01-252023-01-252014-04-01International Journal of Automotive Technology, (2014), 15(3), pp.: 451–461.1229-9138https://hdl.handle.net/10016/36361Engineering bus design requires testing of bus structures prototypes in order to guarantee a certain level of strength and an appropriate static and dynamic behavior of the bus superstructure when exposed to road loads. However, experimental testing of real bus structures is very expensive as it requires expensive resources and space. If testing is done on a scale bus model the previous required expenses are considerably reduced. Therefore, a novel methodology based on dimensional analysis applied to bus structure prediction to evaluate the bus structure static and dynamic performance is proposed. The static performance is evaluated attending to torsion stiffness and the dynamic in terms of the natural vibration frequencies and rollover threshold. A scale bus has been manufactured and dimensionless parameters have been defined in order to project the results obtained in the scale bus model to a larger model. Validation of the proposed methodology has been carried out under experimental and finite element analysis.10eng© 2014 KSAE/077−12BusDimensional analysisStatic torsion testModal analysisMethodology for bus structure torsion stiffness and natural vibration frequency prediction based on a dimensional analysis approachresearch articleIngeniería Mecánicahttps://doi.org/10.1007/s12239-014-0047-1open access4513461INTERNATIONAL JOURNAL OF AUTOMOTIVE TECHNOLOGY15AR/0000015439