Camels and Fennec Foxes: A Case Study on Biologically Inspired Design of Sand Traction Systems

Gendreau, Elizabeth; Shumaker, Andrew W.; Joiner, Eric M.; Griffin, Alix C.; Pritchett, Chase A.; Karmilovich, Keith A.; O’Shields, Steven T.; Summers, Joshua D.

doi:10.1115/detc2015-46286

Cited by 2 publications

(3 citation statements)

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Section: Design and Structural Characteristics Of Nptsmentioning

confidence: 99%

“…24,26 Even so, the work by Jin et al 25 suggests that, under certain conditions, the influence of friction coefficient and angular velocity of NPTs can be neglected while studying the rolling resistance. Using a Tweel™ tire prototype, Gendreau et al 62 evaluated the effect in the traction of different tread and shear beam compositions between a tire and sand. This research uses tread designs bio-inspired in a camel hoof and a fennec fox paw and concludes both concepts improved tire traction.…”

Section: Ground Interaction and Wearmentioning

confidence: 99%

“…Various structural compositions have been explored in the literature, such as those comprising solutions featuring triply periodic minimal surfaces 23,56 functionally compliant materials and structures, 30,57,58 functionally graded-based solutions, 59,60 and bio-inspired cell designs. [61][62][63][64][65] More creative approaches can also be found, such as using chiral 66 and gradient anti-tetrachiral structures, 67 or aperiodic rhombi tessellated spokes. 68 Functionally graded materials (FGMs) emerge as a new class of advanced materials, 69 in which the mechanical, thermal, or chemical properties are tailored to specific functions by gradually varying the material composition or structure over a spatial direction.…”

Section: Npts Design Approachesmentioning

confidence: 99%

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Design, properties, and applications of non-pneumatic tires: A review

Sardinha

Vaz

Ramos

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part L:

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The interest in airless or non-pneumatic tire (NPT) structures emerges due to potential performance and environmental advantages, such as reduced rolling resistance and improved recyclability, when compared with traditional rubber-based pneumatic tires. NPTs can already be found in commercial applications such as forklifts, electric scooters, and wheelchairs. Even so, up to the knowledge of authors, there is no known established large-scale production of NPTs for most applications. This work presents a systematic literature review regarding the mechanical design and development of NPTs. A summary of structural characteristics and mechanical behaviour analysis is provided. Relevant standards, analysis strategies, materials, production techniques, and the end-of-life of tires are addressed. In the end, the authors debate the current challenges and prospects of these emergent products. Furthermore, this research aims at being used as a tool, potentiating the development of innovative and efficient, airless tire solutions. The review presented clarifies that many academic efforts are focused on finding optimal functional designs, which are frequently complex and physically demanding. These geometrically complex design proposals are, in most cases, composed of intricate cellular structures and spokes arrangements. Based on the current lack of knowledge, authors identify key research areas to be further developed such as the production, performance, and reliability of NPTs. It is debatable whether there will ever be a shortcoming of the rubber tire, or a time when fully recyclable tires are a societal obligation. Nevertheless, the number of reasons to promote the development of a reliable replacement to the traditional tire is far from scarce.

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