Static stiffness characteristics of a new non-pneumatic tire with different hinge structure and distribution

Zhao, Youqun; Du, Xianbin; Lin, Fanghua; Wang, Qiang; Fu, Hongxun

doi:10.1007/s12206-018-0608-8

Cited by 40 publications

(26 citation statements)

References 20 publications

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“…When modelling the cordrubber composites, the rebar model was utilized, and the cord-rubber composites were decomposed into the rubber base part and cord reinforcement part. Other components of the ME wheel, such as suspension hub and hinges, were also simulated with C3D8R [32].…”

Section: Main Structure Compositionmentioning

confidence: 99%

Grounding Characteristics of a Non-Pneumatic Mechanical Elastic Tire in a Rolling State with a Camber Angle

Du¹,

Zhao²,

Wang³

et al. 2019

SV-JME

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A non-pneumatic mechanical elastic tire (ME wheel) was introduced, and the grounding characteristics of the ME wheel under a rolling condition with a camber angle were investigated with the combination of finite element simulation and experimental research. According to the ME wheel structure and material characteristics, a numerical simulation model of the ME wheel was established using the finite element (FE) method. The stiffness tests were carried out to verify the accuracy of the simulation model of the ME wheel. To highlight the advantages of the ME wheel, an inflatable tire was selected as the reference tire, and the grounding characteristics of these two tires with different camber angles were compared and analysed in free rolling, braking, and driving conditions. Different slip ratio values for the ME wheel and inflatable tire were applied in driving conditions to analyse the influence of the slip ratio on the grounding characteristics. The obtained results indicated that both the ME wheel and inflatable tire will gradually suffer partial wear of the tread surface as the camber angle increases, but the pressure concentration of the inflatable tire is more serious. The research can provide a basis for structural optimization and comprehensive mechanical performance analysis of the ME wheel.

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Section: Main Structure Compositionmentioning

confidence: 99%

Grounding Characteristics of a Non-Pneumatic Mechanical Elastic Tire in a Rolling State with a Camber Angle

Du¹,

Zhao²,

Wang³

et al. 2019

SV-JME

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“…According to the equations (12) and (13), the key problem in calculating the friction force is the determination of the friction coefficient, which is related to the relative velocity of the contact point, as shown in Figure 9. In Figure 9, the static sliding velocity v s is a criterion for judging static friction and dynamic friction.…”

Section: Definition Of Constraint and Contact Relationsmentioning

confidence: 99%

“…The material parameters C10 and C01 in Mooney-Rivlin model are fitted by uniaxial tensile test data. 13,14 The material properties of different rubber and elastic ring are shown in Table 1. The FE method is used to extract the six lowest natural frequencies and corresponding mode shapes of the elastic outer ring.…”

Section: Rigid-flexible Coupled Modelmentioning

confidence: 99%

“…This paper introduces a new type of road wheel with a flexible structure, using a number of connecting parts (hinge groups) to connect the rim (rubber and elastic ring) and hub. [12][13][14] The flexibility of flexible road wheel is not only reflected in the rim's flexibility, but also in that, the overall structure allows for large deformation without affecting the strength of the structure. In comparison with the traditional road wheel, the flexible road wheel has some advantages in terms of higher load-bearing efficiency and better vibration damping performance.…”

Section: Introductionmentioning

confidence: 99%

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Rigid-flexible coupling modelling and dynamic performance analysis of novel flexible road wheel

Deng

Zhao

Han

et al. 2019

Proceedings of the Institution of Mechanical Engineers, Part K:

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A novel flexible road wheel with hub-hinge-ring combined structure is introduced to improve the buffer damping performance and lightweight level of tracked vehicles. To balance computational efficiency and precision, an advanced rigid-flexible coupled model of the flexible road wheel is established using a hybrid modelling method combining finite element method and multi-body dynamics. The reliability and accuracy of the established rigid-flexible coupled model are verified by wheel static loading experiment. The modal flexible body of the elastic outer ring is developed by modified Craig-Bampton method and the simulated results are in good agreement with the experimental data. Based on the verified rigid-flexible coupled model, the dynamic characteristics of the flexible road wheel under typical operation conditions were investigated. The simulation results show that when the motion state changes, the elastic outer ring will produce a hysteretic angle with respect to the hub, delaying the transmission of torque. The system parameters have a greater effect on the vertical vibration of the flexible road wheel. The higher the vehicle speed, the more vibration will be caused, and the increase in the load and number of hinge groups will reduce the vibration. The research results provide reference for structure optimization of flexible road wheel and lay a foundation for flexible multi-body dynamic simulation of tracked vehicles with flexible road wheels.

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“…The main reason is because the existing research focuses on macro composite mechanics. Researchers have focused on the composite structure adopting equivalent stress and ignored the interface problem [ 5 ]. The rubber-fiber composite’s fine internal cord structure, combined with rubber, should be further investigated.…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation and Constitutive Modeling of the Uncured Rubber Compound Based on the DMA Strain Scanning Method

Sun

Zhang

et al. 2020

Polymers

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Existing research tends to focus on the performance of cured rubber. This is due to a lack of suitable testing methods for the mechanical properties of uncured rubber, in particular, tensile properties. Without crosslinking by sulfur, the tensile strength of uncured rubber compounds is too low to be accurately tested by general tensile testing machines. Firstly, a new tensile stress testing method for uncured rubber was established by using dynamic thermomechanical analysis (DMA) tensile strain scanning. The strain amplitude was increased under a set frequency and constant temperature. The corresponding dynamic force needed to maintain the amplitude was then measured to obtain the dynamic force-amplitude curve observed at this temperature and frequency. Secondly, the Burgers model is usually difficult to calculate and analyze in differential form, so it was reduced to its arithmetic form under creep conditions and material relaxation. Tensile deformation at a constant strain rate was proposed, so the Burgers model could be modified to a more concise form without any strain terms, making mathematical processing and simulating much more convenient. Thirdly, the rate of the modified Burgers model under constant strain was in good agreement with the test data, demonstrating that the elastic stiffness was 1–2 orders of magnitude less than the tensile viscosity. In the end, it was concluded that large data dispersion caused by the universal tensile test can be overcome by choosing this model, and it may become an effective way to study the tensile modeling of uncured rubber compound.

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Static stiffness characteristics of a new non-pneumatic tire with different hinge structure and distribution

Cited by 40 publications

References 20 publications

Grounding Characteristics of a Non-Pneumatic Mechanical Elastic Tire in a Rolling State with a Camber Angle

Grounding Characteristics of a Non-Pneumatic Mechanical Elastic Tire in a Rolling State with a Camber Angle

Rigid-flexible coupling modelling and dynamic performance analysis of novel flexible road wheel

Experimental Investigation and Constitutive Modeling of the Uncured Rubber Compound Based on the DMA Strain Scanning Method

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