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Showing result 1 - 5 of 34 swedish dissertations matching the above criteria.

  2. 1. On modally distributed damping in heavy vehicles

    Author : Peter Holen; Annika Stensson Trigell; Zbigniew Lozia; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; damping; modal damping; chassis suspension; heavy vehicle; attachment compliance; Physics; Fysik;

    Abstract : This thesis investigates passive damping system performance in heavy vehicles through analytical expressions, simulations with different vehicle models as well as through experimental evaluation in a tractor semi trailer combination. The objective is to study what levels of chassis suspension damping that are desirable for different vehicle modes and how this may be achieved with passive damping systems. READ MORE

  4. 2. Improving Machining System Performance through designed-in Damping : Modelling, Analysis and Design Solutions

    Author : Lorenzo Daghini; Cornel Mihai Nicolescu; Miroslav Píška; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Machining performance; Cutting stability; Passive damping; High Damping Interface; Boring bar; Turret; SRA - Production; SRA - Produktion;

    Abstract : With advances in material technology, allowing, for instance, engines to withstand higher combustion pressure and consequently improving performance, comes challenges to productivity. These materials are, in fact, more difficult to machine with regards to tool wear and especially machine tool stability. READ MORE

  5. 3. A study of active-passive damping treatments

    Author : Hélène Illaire; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; active vibration control; damping mechanisms; active constrained layers;

    Abstract : Active Constrained Layer (ACL) treatment is a vibration-damping treatment which consists of a viscoelastic layer constrained by an actuator. It dissipates energy simultaneously by the shearing of the viscoelastic layer and by the action of the actuator. READ MORE

  6. 4. Passive vibration damping in machining systems

    Author : Amir Rashid; KTH; []
    Keywords : ;

    Abstract : .... READ MORE

  7. 5. On passive and active control of machining system dynamics : analysis and implementation

    Author : Amir Rashid; Cornell Mihai Nicolescu; Drogos A. Axinte; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; machining system; chatter; productivity; palletised workholding; damping; tuned viscoelastic damper; Manufacturing engineering; Produktionsteknik;

    Abstract : .... READ MORE