Sökning: "Ulf Sellgren"

Visar resultat 11 - 15 av 19 avhandlingar innehållade orden Ulf Sellgren.

  1. 11. Suspended forestry machines for sustainable forestry

    Författare :Abbos Ismoilov; Ulf Sellgren; Kjell Andersson; Viktor Berbyuk; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Machine Design; Maskinkonstruktion;

    Sammanfattning : Cut-to-length (CTL) logging is a mechanized two-machine solution. The harvester processes treestems into smaller logs and a forwarder transports the logs from the logging site to a landing areaaccessible by trucks. LÄS MER

  3. 12. Automated Computer Systems for Manufacturability Analyses and Tooling Design : Applied to the Rotary Draw Bending Process

    Författare :Joel Johansson; Staffan Sunnersjö; Ulf Sellgren; Jönköping University; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Design For Manufacturability; Design Automation; Rotary Draw Bending; and Knowledge-based Engineering KBE ; Other technology; Övriga teknikvetenskaper; Other industrial engineering and economics; Övrig industriell teknik och ekonomi;

    Sammanfattning : Intensive competition on the global market puts great pressure on manufacturing companies to develop and produce products that meet requirements from customers and investors. One key factor in meeting these requirements is the efficiency of the product development and the production preparation processes. LÄS MER

  4. 13. Supporting complete vehicle reliability forecasts

    Författare :Julia Lindén; Ulf Sellgren; Anders Söderberg; Fredrik Elgh; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Reliability forecast; interactive function; operating conditions; Machine Design; Maskinkonstruktion;

    Sammanfattning : Reliability is one of the properties that customers of heavy trucks value highest.Dependent on all parts and functions of the vehicle, reliability is a complexproperty, which can normally be measured only towards the end of a developmentproject. At earlier development stages, forecasts can give valuable decision supportfor project planning. LÄS MER

  5. 14. A mechanical model of an axial piston machine

    Författare :Rasmus Löfstrand Grip; Ulf Sellgren; Niclas Strömberg; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Multi-body mechanical model; axial piston; Z-shaft; wobble plate; Sophia; Engineering mechanics; Teknisk mekanik;

    Sammanfattning : A mechanical model of an axial piston-type machine with a so-called wobble plate and Z-shaft mechanism is presented. The overall aim is to design and construct an oil-free piston expander demonstrator as a first step to realizing an advanced and compact small-scale steam engine system. LÄS MER

  7. 15. Forestry machine and soil interaction for sustainable forestry

    Författare :Abdurasul Pirnazarov; Ulf Sellgren; Kjell Andersson; Sally Shoop; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; CTL-logging; forestry machine; forwarder; multi-body simulations; roots; terramechanics; wheel-soil interaction; WES model; Machine Design; Maskinkonstruktion;

    Sammanfattning : More than 50 percent of the land area of the Nordic countries Finland, Norway, and Sweden are covered by dense forests and they are among the most important producers of forest products in the world. Forestry in these countries is based on sustainable management principles – reforestation follows harvesting. LÄS MER