Revolutionizing tire engineering: Finite element analysis and design of an X-shaped spoke structure for non-pneumatic military tires
Issued Date
2024-07-01
Resource Type
ISSN
11100168
Scopus ID
2-s2.0-85192838913
Journal Title
Alexandria Engineering Journal
Volume
99
Start Page
303
End Page
318
Rights Holder(s)
SCOPUS
Bibliographic Citation
Alexandria Engineering Journal Vol.99 (2024) , 303-318
Suggested Citation
Rugsaj R., Suvanjumrat C. Revolutionizing tire engineering: Finite element analysis and design of an X-shaped spoke structure for non-pneumatic military tires. Alexandria Engineering Journal Vol.99 (2024) , 303-318. 318. doi:10.1016/j.aej.2024.05.020 Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/98408
Title
Revolutionizing tire engineering: Finite element analysis and design of an X-shaped spoke structure for non-pneumatic military tires
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Author's Affiliation
Corresponding Author(s)
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Abstract
In this study, we developed a non-pneumatic tire (NPT) specifically designed for military vehicles, such as the Humvee. Our aim was to enhance performance on challenging terrains crucial for mission success. We selected a novel X-shaped polygonal structure for the spoke design owing its exceptional load-carrying capacity and durability. The equivalent modulus, which is the key factor in spoke design, was analytically derived and formulated. This calculated modulus served as a benchmark for achieving the desired vertical stiffness of the NPT. We manufactured a prototype NPT and evaluated its mechanical properties by using a polyurethane (PU) spoke structure. Multiple finite element models of the novel NPT, considering different parameters such as the number of spoke sections, thickness, and modulus of elasticity, were developed while maintaining a consistent equivalent modulus value. Dynamic finite element analysis was then performed to assess the rolling performance of the NPT. We found that the maximum dynamic stress at the spoke was 2.387 MPa, which is 0.398 times the allowable yield strength of the PU spoke. This finding confirms the durability of the novel NPT under dynamic usage in military vehicles, with promising implications for overcoming challenging terrains.