Multi-chamber tyre design and analysis for low rolling resistance

Aldhufairi, Hamad Sarhan Dheyab Hamad ORCID: 0000-0002-9687-4604 (2019). Multi-chamber tyre design and analysis for low rolling resistance. University of Birmingham. Ph.D.

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Abstract

Rolling-resistance drives the focus of the majority of tyre developments because of its considerable impact over fuel economy and CO2 emissions considering the enormous amount of vehicles in use worldwide. Many efforts were carried out to lower the rolling-resistance but had no to little gains due to the tyre’s complexity and the resultant trade-offs in the overall performance. This research offers a promising novel and simple tyre solution of four inner chambers to decrease the rolling-resistance while maintaining the other key driving performances satisfactorily. In this research, a full 3D finite element model of the tyre was developed using Abaqus 6.13-1 and validated against several experimental prototypes of single, dual and five multi-chambers respectively for targeted rolling performances. Using the validated finite element model as a base model, the “total design” approach of Stuart Pugh was followed to generate and select the best sub-optimum design of multi-chamber tyre solution. With parametric investigation using the full-factorial design of experiments, an optimum structural design with the best cavity volume and inflation settings were reached. The optimum design provided a 28% decrease in the rolling-resistance, a matching grip, a satisfactory cushioning and an enhanced cornering to that of the standard (baseline) tyre.

Type of Work:

Thesis (Doctorates > Ph.D.)

Award Type:

Doctorates > Ph.D.

Supervisor(s):