Ground Tire
Mostrando 1-12 de 13 artigos, teses e dissertações.
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1. Wheel-surface model parameters estimation: sand humidity influence on traction effort of all-terrain unmanned vehicle
Abstract The aim of the paper is to present the experimental results for material model of the sand, case of wet and dry probe. Since traction and side forces derivation methodology and tire-round interaction models for on-road vehicles are widely described, there is a lack of methods for off-road vehicles. The methodology, presented in this work, includes t
Lat. Am. j. solids struct.. Publicado em: 18/02/2019
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2. Characterization of Metallurgical Coke Produced with Coal Mixtures and Waste Tires
The use of scrap tires in the coal blends is an alternative to reduction of coke production costs as well as mitigates the impact caused by tire accumulation in the environment. Tests were carried out on a pilot scale, with coal blends and waste tire in 4 levels and 3 particle sizes, in order to assess the impact on the produced coke quality, especially on t
Mat. Res.. Publicado em: 03/05/2016
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3. Blends of ground tire rubber devulcanized by microwaves/HDPE - Part B: influence of clay addition
AbstractThe main objective of this work is to study the influence of clay addition on dynamically revulcanized blends of Ground Tire Rubber (GTR)/High Density Polyethylene (HDPE). GTR was previously devulcanized in a system comprised of a conventional microwave oven adapted with a motorized stirring, with a fixed microwave power and at various exposure times
Polímeros. Publicado em: 2015-08
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4. Blends of ground tire rubber devulcanized by microwaves/HDPE - Part A: influence of devulcanization process
Abstract The main objective of this work is the study of the influence of microwaves devulcanization of the elastomeric phase on dynamically revulcanized blends based on Ground Tire Rubber (GTR)/High Density Polyethylene (HDPE). The devulcanization of the GTR was performed in a system comprised of a conventional microwave oven adapted with a
Polímeros. Publicado em: 2015-06
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5. Thermoplastic elastomers blends based on linear low density polyethylene, ethylene-1-octene copolymers and ground rubber tire
Blends of linear low density polyethylene (LLDPE) ethylene-1-octene copolymers (EOC), with different 1-octene (OC) content, and ground rubber tire (GRT) were prepared by melt mixing in a twin screw extruder. Five different compositions of LLDPE/EOC/GRT blends were processed in the extruder to evaluate the effect of EOC addition to the LLDPE/GRT blends. The a
Polímeros. Publicado em: 2014
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6. ANÁLISE DE DESEMPENHO EM TRAÇÃO DE RODADO SIMPLES E DUPLO EM UM TRATOR AGRÍCOLA / ANALYSIS OF TRACTION PERFORMANCE OF SINGLE AND DUAL TIRES IN AN AGRICULTURAL TRACTOR
A major problem of agricultural tractor during several operations in which it is used is the difficulty of working in various moisture conditions and soil types affect your ability to traction force, slip and fuel consumption. What has been observed is that with increased contact surface between the tire of the tractor and the ground, there is the possibilit
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 18/03/2011
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7. ESTUDO DE TRAFEGABILIDADE APLICADO A VEÍCULOS DE RODA EM TRANSPORTE E TRAÇÃO / TRAFFICABILITY STUDY APPLIED TO WHEELED VEHICLES IN TRANSPORT AND TRACTION
The ability of vehicles to traverse soft soils is an important aspect of their performance. The geological, climate and topography diversity originated, in Rio Grande do Sul, extensive areas of hydromorphic clay soils, as example, Planssoils and Gleissoils. When saturated of water, these soft soils present low loads support, difficult agricultural machinery
Publicado em: 2010
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8. Influência de diferentes materiais suporte na produção de hidrogênio em reator anaeróbio de leito fluidizado
O hidrogenio e uma fonte de energia limpa e renovavel e e considerado o combustivel do futuro, pois gera somente agua durante sua combustao e apresenta calor de combustao de 122 kJ.g-1, o que representa 2,75 vezes mais conteudo de energia do que qualquer hidrocarboneto. A producao de hidrogenio usando microrganismos e uma promissora area de desenvolvimento t
Publicado em: 2009
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9. Effect of operating conditions on scrap tire pyrolysis
The ever growing focus on environmental issues has raised concerns about scrap tires, whose major component - vulcanized rubber - does not degrade easily. When burned, tires release toxic gases containing substantial amounts of sulfur and ammonia in addition to other pollutants. Dumped on empty city lots, tires are also a breeding ground for mosquitoes. Many
Materials Research. Publicado em: 2008-09
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10. A comparative study of effect of compatibilization agent on untreated and ultrasonically treated waste ground rubber tire and polyolefin blends
The development of thermoplastic elastomer blends from waste tire powder and two polyolefins, Viz. maleic anhydride grafted polypropylene and LDPE, was studied. The polymer blends were processed using a twin-screw extruder equipped with a well-designed screw configuration. The blends studied contained a dispersed phase of waste rubber powder obtained from wa
Polímeros. Publicado em: 2006-12
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11. Influence of an odd structure in cross ply tires. / Influência da estrutura ímpar em pneus de lonas cruzadas (cross-ply).
The tire is the only bond between the vehicle and the ground, is it that transmits all the power and load, and guarantees the driven and conduction of the automobile. The resistant structure of a tire is one of the most important factors for the efficiency, type of application and security. Knowing these parameters is the primary condition to design a tire.
Publicado em: 2006
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12. Populational and taxonomical studies of fire ants, Solenopsis invicta (Hymenoptera: Formicidae), and of the phenology of their parasitoids of the genus Psedacteon (Diptera: Phoridae) / Estudos populacionais e taxonomicos de formigas lava-pes, Solenopsis invicta (Hymenoptera: Formicidae) e da fenologia de seus parasitoides do genero Pseudacteon (Diptera: Phoridae)
This work discusses some aspects of the ecology of the fire ant species Solenopsis invicta and its phorid parasitoid flies ofthe genus Pseudacteon, and ofthe taxonomy of S. invicta and S. saevissima, both of which are native to South America. The allometry of S. invicta colonies in southeast Brazil was studied by measurement of mound (aboveground) dimensions
Publicado em: 2006