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Wheels and Tyres
Published in Andrew Livesey, Basic Motorsport Engineering, 2012
The wire-spoked wheel is only used on a small number of sports cars. Unlike the other wheel types, which are attached to the hub with studs, the wire-spoked wheel is attached to the hub with a splined section and a single rudge nut. The wire-spoked wheel is slightly flexible and springy. Spoked wheels, as they are usually abbreviated, have the advantages of being light, good looking and allow cool air to pass through them to cool the brakes.
Road holding—wheels and tyres
Published in Andrew Livesey, Bicycle Engineering and Technology, 2020
The spokes work together as a form of disc, in both tension and compression. The rim needs to be held by the spokes centrally on the hub. When large derailleur free-wheel cassettes are used,like 9 speed; this means that the rim is dished by a large amount, so there is a fragility in the wheel. The number of spokes used on each wheel varies between 18 and 40 for most applications.
Wheels and Tyres
Published in G. K. Awari, V. S. Kumbhar, R. B. Tirpude, Automotive Systems, 2021
G. K. Awari, V. S. Kumbhar, R. B. Tirpude
In this type of wheel the hub is attached to the rim through a number of long, thin-wired spokes. The purpose of the spokes is to bear weight, to transmit the driving and braking torques, to withstand side forces when cornering and to avoid bending or compressive loads acting on the wheel. The rim of a wired wheel is not capable of fitting tubeless tyres.
An improved first order approximate reliability analysis method for uncertain structures based on evidence theory
Published in Mechanics Based Design of Structures and Machines, 2023
Xin Liu, Min Gong, Zhenhua Zhou, Jun Xie, Wenguang Wu
Gear transmission is one of the most common drive forms of mechanical transmission system. The reliability of gear transmission structure will directly affect the transmission efficiency of mechanical system. Hence, the proposed method is used to design a practical gear transmission structure (Liu et al. 2021). As demonstrated in Figure 9, the numerical model is constructed by ANYSYS software, which consists of main gear and pinion. During the transmission process, the spoke thickness spoke width and spoke radius will play important roles in the bending stress of the main gear. If the bending stress of the main gear below the allowable maximum stress would better ensure the transmission performance. Thus, a limit-state function can be defined: where the spoke thickness spoke width and spoke radius is set to the evidence variables, whose FDs are [5 mm, 10 mm], [20 mm, 80 mm] and [40 mm, 65 mm], respectively. Meanwhile, their detailed BPA structures are listed in Table 9.
Design of the HL-2M Support System
Published in Fusion Science and Technology, 2023
Deqaun Liu, Tao Lin, Tao Qiao, Lijun Cai, Chengzhi Cao, Yinglong Yuan, Qiang Li
The wagon-wheel structure consists of a main spoke and an assistant spoke extending radials outward to locate and support the coils of PFC-5a, PFC-6a, PFC-5b, and PFC-6b. The outer ends of these spokes are connected to the vertical columns of the outer support structure, and the vertical columns support the horizontal box sections that enclose the poloidal coils. There are 80 box sections for four larger-diameter coils, i.e., PFC-7a, PFC-8a, PFC-8b, and PFC-7a, and each box section consists of two parts that tightly clamp the top and the bottom of the coil surfaces. Support columns are bolted to the thick plates that are welded to the box section. The induced current loop is broken by the G-10 insulators between the box section and the vertical column interface. Although the central solenoid (CS) coil wrapped on the surface of the TFC center post and epoxy harden together, the solenoid coil is restrained in the vertical direction by the inner end of the wagon-wheel spokes.
Study of geometric effects on nonpneumatic tire spoke structures using finite element method
Published in Mechanics Based Design of Structures and Machines, 2022
Ravivat Rugsaj, Chakrit Suvanjumrat
The finite element analysis results of vertical stiffness models were analyzed, and the deformation and Von Mises stress analysis results are shown in Figures 9 and 10, respectively. The deformation and stress distributions of spokes are found to be in tension and compression at the upper and lower part of the spoke structure, respectively. This indicated the function of spokes to share the force distribution on all spokes, which was counterintuitive because the deformation did not occur only at the lower part of the spoke. Therefore, it could be concluded that a good NPT design should exhibit this function of spoke geometry to share the force distribution on all spokes. This could be achieved by appropriate spoke geometry with optimum parameters, such as shape, thickness, and number of spokes which matched the factors of material and shear band behaviors.