Tire Science and Technology最新文献_第2页

Tires for Mars Rovers: Reinforcing BR and BR/Vinyl-Methyl Silicone Rubber Compounds with Carbon Black, Nano-CaCO3, or Silica for Good Low-Temperature Dynamic-Mechanical Performance 火星漫游者轮胎:用炭黑、纳米碳酸钙或二氧化硅增强BR和BR/乙烯基甲基硅橡胶化合物，以获得良好的低温动态机械性能

IF 0.8

Tire Science and Technology Pub Date : 2023-05-12 DOI: 10.2346/tire.23.23003

R. Anyszka, Lili Jia, A. Blume

{"title":"Tires for Mars Rovers: Reinforcing BR and BR/Vinyl-Methyl Silicone Rubber Compounds with Carbon Black, Nano-CaCO3, or Silica for Good Low-Temperature Dynamic-Mechanical Performance","authors":"R. Anyszka, Lili Jia, A. Blume","doi":"10.2346/tire.23.23003","DOIUrl":"https://doi.org/10.2346/tire.23.23003","url":null,"abstract":"\u0000 Dynamic increment in Mars exploration missions necessitates the development of new materials that can satisfy the ever more stringent requirements. Currently, most of the materials used for manufacturing Mars rovers and landers are based on various metal alloys that provide high reliability in the Martian environment. However, the future planned missions, including the first human crew landing on Mars, require the development of new rubber materials that could be used for sealing Mars suits, for tires/tracks, and for damping systems for heavy Mars rovers. This research aims to investigate the properties of butadiene rubber (BR) and butadiene/vinyl-methyl silicone rubber blends (BR/VMQ) filled with various reinforcing fillers: carbon blacks (CBs), silicas, and nanometric calcium carbonate (nano-CaCO3), in order to evaluate their performance from the point of view of Mars' environmental applications. The study revealed that the designed composites exhibit very good low-temperature elasticity, and the addition of 30 phr of high surface area CB (N220) or silica (Ultrasil 9100) results in good mechanical properties of the compounds. The mechanical properties of the BR/VMQ blends depend on the type of reinforcing filler. The addition of the CBs resulted in better mechanical properties, while the incorporation of silicas worsens the mechanical properties of BR/VMQ blends in comparison to their BR counterparts. The high-cis BR grade exhibits a strong tendency to crystallize in the operating temperature range on Mars (crystallization ∼−60 °C, melting ∼−20 °C), and the addition of the fillers nucleates the crystallization, resulting in a higher amount of the crystalline phase. This might be a serious problem for any sealing application of the rubber compounds. For this reason, a non-crystallizable BR grade is recommended for further studies.","PeriodicalId":44601,"journal":{"name":"Tire Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2023-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46212897","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Experimental Validation of Elliptical Contact Patch Tire Model 椭圆接触式补胎模型的实验验证

IF 0.8

Tire Science and Technology Pub Date : 2023-04-19 DOI: 10.2346/tire.23.22008

Ryota Nakanishi, M. Matsubara, Takashi Ishibashi, S. Kawamura, Daiki Tajiri

{"title":"Experimental Validation of Elliptical Contact Patch Tire Model","authors":"Ryota Nakanishi, M. Matsubara, Takashi Ishibashi, S. Kawamura, Daiki Tajiri","doi":"10.2346/tire.23.22008","DOIUrl":"https://doi.org/10.2346/tire.23.22008","url":null,"abstract":"\u0000 The influence of tires on vehicle dynamics, as the only automotive component in contact with the road surface, is significant. Mechanical models such as the Fiala model includes tire mechanical properties as parameters and are useful for tire design studies. These models assume a rectangular or trapezoidal tire contact shape, which does not always match the tire contact shape observed when slip angle is applied, leaving room for improvement in accuracy. This study proposes a new semiphysical tire model with an elliptical contact shape, termed the “elliptical contact model.” First, the expressions for the contact shape and contact pressure distributions in the elliptical contact model are formulated. Herein, we consider both the length- and width-direction distributions of the contact pressure in these expressions. Second, the formulation of the lateral shear stress distribution in the contact patch is presented based on the Fiala model, including the belt bending deformation by a lateral force and switching between the lateral shear and dynamic frictional forces. Lateral stresses proportional to the width coordinate are also introduced, enabling the calculation of lateral stresses acting in a direction counteracting each other at the widthwise edge of the tire contact surface. The model is validated by measuring a slick tire at a velocity of 100 km/h with slip angles of 0° and 3° using an Inside Drum Machine with an aluminum road segment with quartz piezoelectric sensors. Consequently, by setting appropriate model parameters, the contact pressure and lateral shear stress distribution results calculated using the model are consistent with experimental results. The accuracy of the proposed model could be further improved by revising the method of setting the static and dynamic friction coefficients.","PeriodicalId":44601,"journal":{"name":"Tire Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2023-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41254654","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A Study on Self-Sustained Vibrations of a Tire Operating above Peak Friction 峰值摩擦以上轮胎自持续振动的研究

IF 0.8

Tire Science and Technology Pub Date : 2023-03-22 DOI: 10.2346/tire.23.22015

C. Lugaro, Y. Li, M. Alirezaei

{"title":"A Study on Self-Sustained Vibrations of a Tire Operating above Peak Friction","authors":"C. Lugaro, Y. Li, M. Alirezaei","doi":"10.2346/tire.23.22015","DOIUrl":"https://doi.org/10.2346/tire.23.22015","url":null,"abstract":"\u0000 When a tire operates at a side slip level above peak friction, large vibrations in the produced forces and moments are observed. In the lateral direction, these vibrations are typically centered at frequencies close to 50 Hz and significantly affect the force that is produced by the tire. As an example, high dynamics vehicle maneuvers with an electronic stability program control system in the loop can be affected by this behavior. To accurately reproduce the tire response in these operating conditions, it is important to employ a model that can capture this phenomenon.\u0000 Based on analysis of nonlinear, unstable systems and limit cycle phenomenon, a theory is presented that provides a physical background for the source of vibrations. The theory also gives insight in how the frequency and amplitude of the vibrations are influenced by the tire physical characteristics and the operating conditions. It is found that the most dominant characteristics are the shape of the steady-state force response of the tire around peak friction, the contact patch mass, the carcass damping and stiffness. Simulations with physical models of different complexity levels, as well as with the commercial Simcenter Tire MF-Tyre/MF-Swift tire software model, validate the theory and demonstrate how the vibrations can be reproduced in a simulation environment. The simulation results are compared with tire measurements in different operating conditions, validating the exposed theory and employed models.","PeriodicalId":44601,"journal":{"name":"Tire Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2023-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46193489","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Crystallinity of Recycled PET Fibers from Chemical and Mechanical Reprocessing 化学和机械后处理回收PET纤维的结晶性

IF 0.8

Tire Science and Technology Pub Date : 2023-03-20 DOI: 10.2346/tire.23.22020

Leyao Wu, Gavan W. Lienhart, S. Basak, S. Jana, Kevin A. Cavicchi, J. Eagan

引用次数: 0

An Exponential Decay Model for Decaying of Contact Patch Friction Steering Moment with Rolling Speed 接触摩擦转向力矩随滚动速度衰减的指数衰减模型

IF 0.8

Tire Science and Technology Pub Date : 2023-03-06 DOI: 10.2346/tire.23.21017

Jai Prakash, M. Vignati, E. Sabbioni

引用次数: 0

A Microsphere-Based Rubber Curing Model for Tire Production Simulation 基于微球的轮胎生产模拟橡胶固化模型

IF 0.8

Tire Science and Technology Pub Date : 2023-01-27 DOI: 10.2346/tire.23.21018

T. Berger, Kim Sang-hyub, M. Kaliske

{"title":"A Microsphere-Based Rubber Curing Model for Tire Production Simulation","authors":"T. Berger, Kim Sang-hyub, M. Kaliske","doi":"10.2346/tire.23.21018","DOIUrl":"https://doi.org/10.2346/tire.23.21018","url":null,"abstract":"\u0000 In this contribution, a constitutive model for rubber is presented that describes the material in its unvulcanized and vulcanized state as well as during its phase transition. The model is based on the microsphere approach to represent the three-dimensional macroscopic behavior by a set of one-dimensional microscopic chains. When the uncured rubber is exposed to large temperature, the polymer chains build-up crosslinks among each other and the material changes its properties from soft viscoplastic to stiffer viscoelastic behavior. The state of cure over time at different temperatures is identified via a moving die rheometer (MDR) test. Based on this experimental data, a kinetic model is fitted to represent the state of cure in the simulation. The material model changes from the description of an unvulcanized state to a vulcanized state based on the current degree of cure in a thermomechanically consistent manner and fulfills the second law of thermodynamics. The curing model framework is suitable to combine any given material models for uncured and cured rubber.\u0000 The presented material formulation is applied to an axisymmetric tire production simulation. Therefore, the kinetic state of cure approach is fitted to MDR experimental data. The uncured and cured material model parameters are fitted separately to experiments by a gradient based fitting procedure. The in-molding and curing process of a tire production is simulated by a finite element approach. Subsequently, the simulated footprint of the tire is compared to experimental results. It can be shown that the quality of the footprint could be optimized solely by changing the shape of the green tire.","PeriodicalId":44601,"journal":{"name":"Tire Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2023-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42269012","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

On-Road Vehicle Measurement of Tire Wear Particle Emissions and Approach for Emission Prediction 道路车辆轮胎磨损颗粒排放的测量及排放预测方法

IF 0.8

Tire Science and Technology Pub Date : 2022-12-05 DOI: 10.2346/tire.22.21024

T. Feißel, M. Kunze, D. Hesse, V. Ivanov, K. Augsburg, S. Gramstat

引用次数: 2

Improved Vehicle Longitudinal Velocity Estimation Using Accelerometer Based Intelligent Tire 基于加速度计的智能轮胎改进车辆纵向速度估计

IF 0.8

Tire Science and Technology Pub Date : 2022-11-30 DOI: 10.2346/tire.22.20012

Rajvardhan Nalawade, A. Nouri, Utkarsh Gupta, Anish Gorantiwar, S. Taheri

{"title":"Improved Vehicle Longitudinal Velocity Estimation Using Accelerometer Based Intelligent Tire","authors":"Rajvardhan Nalawade, A. Nouri, Utkarsh Gupta, Anish Gorantiwar, S. Taheri","doi":"10.2346/tire.22.20012","DOIUrl":"https://doi.org/10.2346/tire.22.20012","url":null,"abstract":"\u0000 An intelligent tire–based algorithm was developed to reinforce the vehicle longitudinal velocity estimation, from the vehicle inertial measurement unit (IMU). A tire was instrumented using a triaxis accelerometer (intelligent tire) in an instrumented vehicle with an IMU, and a global positioning system (GPS) based speed sensor (VBOX) as the ground truth for vehicle velocity. A testing matrix was developed, including two tire inflation pressures, two normal loads, and variable speed between 4 m/s to 14 m/s. A signal processing algorithm was developed to analyze the data from the accelerometer. Variational mode decomposition and Hilbert spectrum analysis were used for extracting features from each tire revolution. Later, a machine learning algorithm was trained to estimate the velocity using the acceleration data from the intelligent tire. Because the sampling rates of the IMU data and the intelligent tire data were different, sensor fusion was implemented. This calculated velocity was then used to correct the IMU-based estimated velocity. This new velocity can be used to enhance the performance of all advanced chassis control systems, such as ABS and ESP.","PeriodicalId":44601,"journal":{"name":"Tire Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2022-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43728022","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Tire Science and TechnologyKeyword Index to Volume 50 2022 轮胎科技关键词索引至2022年第50卷

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Tire Science and Technology Pub Date : 2022-10-01 DOI: 10.2346/1945-5852-50.4.380

引用次数: 0

Tire Science and TechnologyAuthor Index to Volume 50 2022 轮胎科学与技术2022年第50卷作者索引

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Tire Science and Technology Pub Date : 2022-10-01 DOI: 10.2346/1945-5852-50.4.377

引用次数: 0