Sökning: "rigid body motion"

Visar resultat 11 - 15 av 45 avhandlingar innehållade orden rigid body motion.

  1. 11. Simplified mechanical models for the nonlinear dynamic analysis of elasto-plastic steel structures impacted by a rigid body

    Författare :Piseth Heng; Jean-Marc Battini; Mohammed Hjiaj; Bassam Izzuddin; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Byggvetenskap; Civil and Architectural Engineering;

    Sammanfattning : Buildings subjected to impact and explosion are usually studied using large scale and highly nonlinear finite element model which are time-consuming. The first part of the thesis deals with the development of simple and accurate models for evaluating the nonlinear inelastic behaviour of steel frame structures subjected to impact. LÄS MER

  3. 12. Adaptive Bounding Volume Hierarchies for Efficient Collision Queries

    Författare :Thomas Larsson; Björn Lisper; Tomas Akenine-Möller; Stefane Redon; Mälardalens högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Bounding volume hierarchies; Collision detection; Rigid bodies; Deformable models; Data structures; Simulation; Animation; Three-dimensional graphics and realism; Computer science; Datavetenskap; Datavetenskap;

    Sammanfattning : The need for efficient interference detection frequently arises in computer graphics, robotics, virtual prototyping, surgery simulation, computer games, and visualization. To prevent bodies passing directly through each other, the simulation system must be able to track touching or intersecting geometric primitives. LÄS MER

  4. 13. Numerical modelling of particulate matter deposition in exhaust gas after-treatment systems

    Författare :Ananda Subramani Kannan; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Immersed boundary method; DNS; Brownian motion; PM transformation and Rarefied gas; Nanoscales;

    Sammanfattning : As urban air quality declines, the corresponding levels of particulate matter (PM), that include pollutants such as sulfates, nitrates and black carbon, rise posing the greatest risks to human health. Hence, the control of these particulate emissions constitutes a major global challenge that commands serious attention. LÄS MER

  5. 14. Performance, Processing and Perception of Communicative Motion for Avatars and Agents

    Författare :Simon Alexanderson; Jonas Beskow; John Glauert; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Tal- och musikkommunikation; Speech and Music Communication;

    Sammanfattning : Artificial agents and avatars are designed with a large variety of face and body configurations. Some of these (such as virtual characters in films) may be highly realistic and human-like, while others (such as social robots) have considerably more limited expressive means. LÄS MER

  7. 15. High-Speed Vision and Force Feedback for Motion-Controlled Industrial Manipulators

    Författare :Tomas Olsson; Institutionen för reglerteknik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; robotics; Automation; Force vision control; Visual tracking; Visual servoing; control engineering; Automatiska system; robotteknik; reglerteknik;

    Sammanfattning : Over the last decades, both force sensors and cameras have emerged as useful sensors for different applications in robotics. This thesis considers a number of dynamic visual tracking and control problems, as well as the integration of these techniques with contact force control. LÄS MER