Rubber Joint for Fatigue Crack Factors Numerical Analysis of Certain Vehicle

Wang, Sheng Wu; Wang, Wei Da; Zhou, Dian Mai

doi:10.4028/www.scientific.net/amm.66-68.1505

Cited by 3 publications

(4 citation statements)

References 4 publications

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“…The hardness of outsole materials is indicated with Shore A Hardness (HA, º), which is generally used to measure the hardness of rubber products; the greater its value, the higher the hardness ( Zhao et al, 2015 ). The equation of Elastic modulus (E) and outsole hardness (HA) is as follows ( Wang et al, 2011 ): …”

Section: Methodsmentioning

confidence: 99%

A Pilot Study of the Effect of Outsole Hardness on Lower Limb Kinematics and Kinetics during Soccer Related Movements

Sun

Mei

Baker

et al. 2017

Journal of Human Kinetics

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The purpose of this study was to investigate the effect of different outsole hardness of turf cleats shoes on the lower limb kinematics and kinetics of soccer players playing on artificial turf. The participants were required to complete tasks of straight running and 45° left sidestep cutting movements, respectively, at the speed of 4.5 ± 0.2 m/s on artificial turf. They were asked to randomly select turf cleats shoes with a soft outsole (SO), medium hardness outsole (MO) and hard outsole (HO). During the stance phase of straight running, peak pressure and force-time integral in medial forefoot (MFF) of players wearing cleats shoes with MO were significantly higher than those wearing cleats shoes with SO. During the stance phase of a 45° cutting maneuver, players wearing cleats shoes with SO showed significantly higher peak knee flexion and abduction angles than the HO group. Players wearing cleats shoes with SO also showed higher ankle dorsiflexion and inversion angles compared with those wearing cleats shoes with HO. The vertical average loading rate (VALR) as well as peak pressure and force-time integral in the heel (H) and lateral forefoot (LFF) regions of players wearing cleats shoes with HO were significantly higher than those wearing shoes with SO. On the contrary, peak pressure and force-time integral of players wearing shoes with SO were significantly higher than those wearing shoes with HO in MFF. A higher vertical loading rate and plantar pressure of some areas may increase the potential risk of metatarsal stress fractures and plantar fasciitis. Therefore, this finding about turf cleats shoes could give some theoretic support for the design of turf cleats shoes and material optimization in the future.

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Section: Methodsmentioning

confidence: 99%

A Pilot Study of the Effect of Outsole Hardness on Lower Limb Kinematics and Kinetics during Soccer Related Movements

Sun

Mei

Baker

et al. 2017

Journal of Human Kinetics

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show abstract

“…(1) E is the elastic modulus of rubber material, σ is the pressure per unit area and ε is the shape variable of a material under specific pressure. Combine with calculation formula of soft hardness index [15,16]. E=(15.75+2.15HA)/(100-HA).…”

Section: Methodsmentioning

confidence: 99%

Analysis of Foot Kinematics with Unstable Sole Structure Using Oxford Foot Model

Zhang

Fekete

Fernandez

et al. 2017

JBBBE

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To determine the influence of the unstable sole structure on foot kinematics and provide theoretical basis for further application.12 healthy female subjects walked through a 10-meter experimental channel with normal speed wearing experimental shoes and control shoes respectively at the gait laboratory. Differences between the groups in triplanar motion of the forefoot, rearfoot and hallux during walking were evaluated using a three-dimensional motion analysis system incorporating with Oxford Foot Model (OFM). Compare to contrast group, participants wearing experimental shoes demonstrated greater peak forefoot dorsiflexion, forefoot supination and longer halluces plantar flexion time in support phase. Additionally, participants with unstable sole structure also demonstrated smaller peak forefoot plantarflexion, rearfoot dorsiflexion and range of joint motion in sagittal plane and frontal plane.. The difference mainly appeared in sagittal and frontal plane. With a stimulation of unstable, it may lead to the reinforcement of different flexion between middle and two ends of the foot model. The greater forefoot supination is infered that the unstable element structure may affect the forefoot motion on the frontal plane and has a control effect to strephexopodia people. The stimulation also will reflexes reduce the range of rearfoot motion in sagittal and frontal planes to control the gravity center of the body and keep a steady state in the process of walking.

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“…After comparing the results of the experiments and simulations, the most suitable strain energy function hyperelastic material model of the rubber fender was determined finally. Wang et al [14] analyzed the factors of the stress field and strain field of rubber joints and the relationship between these factors and the location of fatigue cracks through threedimensional finite element simulation. The results showed that the stress concentration is not sensitive to the prediction of a fatigue crack's location, and the method of using strain concentration to predict the fatigue crack location of rubber joints was proposed.…”

Section: Introductionmentioning

confidence: 99%

“…where ε 1 is the principal strain (engineering strain) in this direction. Substituting formula (13) and formula (14) into formula (11), it can be obtained that:…”

mentioning

confidence: 99%

Numerical Optimization for the Impact Performance of a Rubber Ring Buffer of a Train Coupler

Yao

et al. 2021

Machines

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Shock and vibration caused by mechanical motion bring huge potential threats to the service life and assembly reliability of mechanical systems. Rubber materials have been widely used in aircraft, trains, and other engineering fields, due to their excellent properties in shock and vibration absorption. This paper aimed to study the rubber ring buffer applied to a certain type of Chinese locomotive. Firstly, the finite element model was established and verified through experimental data. Based on the verified simulation model, the influence of the constitutive parameters (C01/C10 ratio height H and contour radius R) of the rubber ring on its energy absorption and peak crushing force under impact loading was studied in a numerical environment. Finally, the design of the experiment was carried out by the optimized Latin hypercube method, and the response surface model was established, which intuitively demonstrated the influence of the relevant parameters of the rubber ring on the change trend of the energy absorption and peak force. Based on the proxy model, the parameters that improve the crashworthiness of the rubber ring buffer were found quickly by the NSGA-II optimization algorithm, and the problems of a long calculation time and low optimization efficiency when using the conventional finite element method were avoided. The optimization results stated that when H = 107.57 mm and R = 85.70 mm, C01/C10 = 0.0571 of the energy absorption of the optimized buffer was increased by 59.03%, and the peak force was decreased by 14.37%, compared with the original structure. The optimized rubber ring buffer is expected to reduce the peak crushing force, enhance the energy absorption capacity, and mitigate the damage to the train system caused by shock and vibration.

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Rubber Joint for Fatigue Crack Factors Numerical Analysis of Certain Vehicle

Cited by 3 publications

References 4 publications

A Pilot Study of the Effect of Outsole Hardness on Lower Limb Kinematics and Kinetics during Soccer Related Movements

A Pilot Study of the Effect of Outsole Hardness on Lower Limb Kinematics and Kinetics during Soccer Related Movements

Analysis of Foot Kinematics with Unstable Sole Structure Using Oxford Foot Model

Numerical Optimization for the Impact Performance of a Rubber Ring Buffer of a Train Coupler

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