Sökning: "machining simulations"

Visar resultat 21 - 25 av 36 avhandlingar innehållade orden machining simulations.

  1. 21. Microstructure and wear mechanisms of textured CVD alumina and titanium carbonitride coatings

    Författare :Siamak Shoja; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Plastic deformation; Texture; TKD; Electron microscopy; Coatings; CVD; TiCN; α-alumina; Wear mechanisms;

    Sammanfattning : The aim of this thesis is to find the reasons behind how the wear performance of hard coatings produced by chemical vapor deposition (CVD) is influenced by their texture, as this is today not fully known. Therefore, differently textured coatings were synthesized, and subsequently analyzed both before and after specially designed machining tests. LÄS MER

  3. 22. Numerical investigation on the formation mechanism of residual stress in metal cutting

    Författare :Yang Liu; Industriell Produktion; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Residual stress; FEM; ; Metal cutting; Thermal-mechanical load; Plastic deformation;

    Sammanfattning : Residual stress can be introduced unintentionally into the workpiece with various magnitudes and distributions through all manufacturing processes. These stresses have a significant effect upon the performance of the final component. LÄS MER

  4. 23. Active control of vibration and analysis of dynamic properties concerning machine tools

    Författare :Henrik Åkesson; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Active Control; Modal Analysis; Analog Controller;

    Sammanfattning : Vibration in internal turning is a problem in the manufacturing industry. Vibrations appear under the excitation applied by the material deformation process during the machining of a workpiece. LÄS MER

  5. 24. Metamodel Based Multi-Objective Optimization with Finite-Element Applications

    Författare :Kaveh Amouzgar; Amos H. C. Ng; Kent Salomonsson; Tobias J. Andersson; Johan Ölvander; Högskolan i Skövde; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Production and Automation Engineering; Produktion och automatiseringsteknik;

    Sammanfattning : As a result of the increase in accessibility of computational resources and the increase of computer power during the last two decades, designers are able to create computer models to simulate the behavior of complex products. To address global competitiveness, companies are forced to optimize the design of their products and production processes. LÄS MER

  7. 25. Investigation of Forces and Contact Area for Modelling Turning Processes

    Författare :Ove Bayard; KTH; []
    Nyckelord :Modelling; turning processes; cutting forces; contact length; Quick Stop Device; QSD; simulation programs; FEM; predictive models.; NATURAL SCIENCES; NATURVETENSKAP;

    Sammanfattning : This thesis is focused on an investigation of forces andcontact area for modelling turning processes. The primary taskin short term research has been to take a first steptowards animproved model of the cutting process. LÄS MER