Search for dissertations about: "Rullmotstånd"

Showing result 1 - 5 of 6 swedish dissertations containing the word Rullmotstånd.

  2. 1. Tyre-road Interaction: a holistic approach to noise and rolling resistance

    Author : Tiago Vieira; Sigurdur Erlingsson; Ulf Sandberg; Anders Genell; Hans Jonasson; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; pavement; surface; texture; noise; rolling resistance; tyre; Vägbeläggning; vägyta; textur; buller; rullmotstånd; däck; Byggvetenskap; Civil and Architectural Engineering;

    Abstract : Energy dissipation, fuel consumption, real-estate property prices and health issues are some of the aspects related to the tyre/pavement interaction and its functional properties of rolling resistance and noise. The first two aspects are affected by the tyre/road interaction as energy is dissipated mostly by hysteretic losses as the tyre is subjected to dynamic deformations when contacting the pavement surface. READ MORE

  4. 2. The relationship between rolling resistance and tyre operating conditions, with a focus on tyre temperature

    Author : Lisa Ydrefors; Annika Stensson Trigell; Jenny Jerrelind; Jurek Ejsmon; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Rolling resistance; tyre temperature; brush model; parametrisation; rolling resistance measurement; drum measurements; operating conditions; tyre; flat track measurements; Rullmotstånd; rullmotståndsmätning; däcktemperatur; driftsförhållanden; trummätning; borstmodellen; parametrisering; däck; Vehicle and Maritime Engineering; Farkostteknik;

    Abstract : Efforts to reduce greenhouse gas emissions from today’s increasing number of cars and trucks, are crucial in counteracting global warming. These efforts include the intent to reduce the effects of the resistive forces acting on the vehicle. Rolling resistance is one of these forces. READ MORE

  5. 3. Modelling and experimental testing of truck tyre rolling resistance

    Author : Jukka Hyttinen; Lars Drugge; Jenny Jerrelind; James Busfield; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Truck tyre; PRF; filler-reinforced rubber; ambient temperature; rubber testing; constitutive modelling; parametrisation; rolling resistance; load cell; Fletcher-Gent effect; Payne effect; Lastbilsdäck; PRF; förstärkande fyllmedel; gummi; omgivningstemperatur; gummiprovning; konstitutiv modellering; parametrisering; rullmotstånd; lastcell; Fletcher-Gent effekt; Payne effekt; Teknisk mekanik; Engineering Mechanics;

    Abstract : Truck transport offers a versatile way to ship goods in regional, long haulage and urban applications. However, the heavy truck sector accounts for 6 % of total greenhouse gas emissions in the European Union. Therefore, there is a need for a substantial reduction of these emissions to secure the sustainability of Earth for future generations. READ MORE

  6. 4. Tyre/road interaction : A holistic approach to the functional requirements of road surfaces regarding noise and rolling resistance

    Author : Tiago Vieira; Sigurdur Erlingsson; Ulf Sandberg; Tony Parry; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Road; surface; noise; rolling resistance; tyre; mitigation; Vägbeläggning; vägyta; textur; buller; rullmotstånd; däck; Building Materials; Byggnadsmaterial;

    Abstract : Increased fuel consumption, increased greenhouse gas emission, diminishing real-estate prices and increased health issues are some of  the negative effects on the climate, on the environment and on the society from tyre/road rolling resistance and noise. The first two aspects are affected by energy dissipation in the tyre/pavement contact and are related to rolling resistance. READ MORE

  7. 5. Road Surface and Tyre Interaction : Functional Properties affecting Road Dust Load Dynamics and Storage

    Author : Joacim Lundberg; Sigurdur Erlingsson; Mats Gustafsson; Xavier Querol; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Road dust; Road abrasion wear; Studded tyre abrasion wear; Texture; Emissions; Abrasion wear model; NORTRIP; PM10; Particles; Stone Mastic Asphalt – SMA; Porous Pavements; Double Layered Porous Asphalt Concrete – DLPAC; Road traffic noise; Rolling Resistance; Friction; Holistic; Function; Functional properties; Functional demands; Temporal variation; Spatial variation; Vägdamm; Vägslitage; Dubbdäcksslitage; Textur; Emissioner; Slitagemodell; NORTRIP; PM10; Partiklar; Asfaltsbetong; stenrik - ABS; Dränerande beläggning; Dubbeldränerande beläggning; Buller; Rullmotstånd; Friktion; Holistisk; Funktion; Funktionskrav; Tidsvariation; Rumsvariation; Byggvetenskap; Civil and Architectural Engineering; Building Materials; Byggnadsmaterial;

    Abstract : Luftburna partiklar (PM) är ett problem för människans hälsa, där flertalet samband mellan negativa hälsoeffekter finns mellan luftföroreningar finns, bland annat för respiratoriska sjukdomar, lungcancer och kardiovaskulära sjukdomar med flera. I länder där dubbdäck används, till exempel Sverige, Finland och Norge, och sandning av vägar och gator genomförs vintertid för att säkerställa god friktion kommer en betydande andel av partiklarna från vägslitage och nedkrossning av sand vilket bidrar till PM10. READ MORE