Sökning: "slip resistance"

Visar resultat 1 - 5 av 10 uppsatser innehållade orden slip resistance.

  1. 1. Planetary Rover Wheel and Lower Leg Structural Design to Reduce Rock Entanglements

    Master-uppsats, Luleå tekniska universitet/Institutionen för system- och rymdteknik

    Författare :Natalie Lawton; [2020]
    Nyckelord :Mars; rover; wheels; planetary rover wheels; flexible wheels; rigid wheels;

    Sammanfattning : This thesis looks at the SherpaTT planetary rover. The rover is a hybrid walking and driving rover that has been developed and built by DFKI and has already been deployed on several Mars analogue field studies. The SherpaTT rover wheels were found to become entangled in rocks during the last field deployment in Morocco. LÄS MER

  3. 2. Influence of nitrocarburization on the thermomechanical fatigue properties of ductile iron for exhaust components : Analysis and comparisons of TMF-properties

    Master-uppsats, Karlstads universitet/Fakulteten för hälsa, natur- och teknikvetenskap (from 2013)

    Författare :Karl Larsson; [2019]
    Nyckelord :Thermo-mechanical fatigue; low cycle fatigue; thermal strain; ductile cast iron; nitrocarburizing;

    Sammanfattning : New stricter environmental legislation requires lower emissions and fuel consumption of automotive engines. Therefore the fuel efficiency must be increased but this leads to higher loads in the engine. As for the exhaust system it is affected by higher thermomechanical loads. LÄS MER

  4. 3. Study of glue-laminated timber connections with high fire resistance using expanded steel tubes

    Uppsats för yrkesexamina på avancerad nivå, Luleå tekniska universitet/Byggkonstruktion och brand

    Författare :David Ronstad; Niklas Ek; [2018]
    Nyckelord :Expanded steel tubes; Glue-laminated timber; Fire resistance; Glue-laminated timber connection; Expanderade ståltuber; Limträ; Brandmotstånd; Limträförband;

    Sammanfattning : A key factor regarding fire safety of timber buildings is the performance of connections between the structural elements, since this determines the load-carrying capacity of the structure. Traditional timber connections do generally perform poorly in a fire compared to surrounding parts since the joints often consist of exposed metal parts and cavities which locally decreases the fire resistance. LÄS MER

  5. 4. Improving Traction Efficiency in Off-Road Vehicles - A Sliding Mode Approach

    Master-uppsats, KTH/Optimeringslära och systemteori

    Författare :Payam Maroufi; [2018]
    Nyckelord :Slip efficiency; sliding mode controller; sliding mode observer; articulated vehicles; wheel loader dynamic.; Slipeffektivitet; sliding mode regulator; sliding mode observerare; ledat fordon; hjullastarens dynamik.;

    Sammanfattning : This report evaluates the option of using an equal slip controller, an effective rolling radius and rolling resistance force observer in a 4WD wheel loader. The vehicle studied is an under development- vehicle designed by Volvo CE. LÄS MER

  7. 5. Drag Torque and Synchronization Modelling in a Dual Clutch Transmission

    Master-uppsats, Lunds universitet/Maskinelement

    Författare :Mikael Lund; [2018]
    Nyckelord :drag torque; synchronization; dual clutch transmission; Technology and Engineering;

    Sammanfattning : Noise, vibration and harshness (NVH) is a big consideration in the automotive industry. In order to create an as pleasant driving experience as possible for the driver, NVH should be minimized. One of the sources of NVH comes from the transmission due to the synchronization process. LÄS MER