Sökning: "Larsgunnar Nilsson"

Visar resultat 6 - 10 av 25 avhandlingar innehållade orden Larsgunnar Nilsson.

  1. 6. Multidisciplinary Design Optimization of Automotive Structures

    Författare :Rebecka Domeij Bäckryd; Larsgunnar Nilsson; Per-Olof Marklund; Linköpings universitet; []
    Nyckelord :Multidisciplinary design optimization MDO ; single-level optimization methods; multi-level optimization methods; metamodel-based design optimization MBDO ; automotive structures;

    Sammanfattning : Multidisciplinary design optimization (MDO) can be used as an effective tool to improve the design of automotive structures. Large-scale MDO problems typically involve several groups who must work concurrently and autonomously for reasons of efficiency. When performing MDO, a large number of designs need to be rated. LÄS MER

  3. 7. A Study on Microstructure-Dependent Deformation and Failure Properties of Boron Alloyed Steel

    Författare :Stefan Golling; Larsgunnar Nilsson; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Hållfasthetslära; Solid Mechanics;

    Sammanfattning : Developments in the automotive industry are driven by customer desires and legislative authorities. Legislation has restricted the emissions standards for vehicles, and has mandated the need for higher safety standards. LÄS MER

  4. 8. Finite Element Analysis of Sheet Metal Assemblies : Prediction of Product Performance Considering the Manufacturing Process

    Författare :Alexander Govik; Larsgunnar Nilsson; Ramin Moshfegh; Mats Oldenburg; Linköpings universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : This thesis concerns the development of methodologies to be used to simulate complete manufacturing chains of sheet components and the study of how different mechanical properties propagate and influence succeeding component performance.Since sheet metal assemblies are a major constituent of a wide range of products it is vital to develop methodologies that enable detailed evaluation of assembly designs and manufacturing processes. LÄS MER

  5. 9. Simulation of the Manufacturing Process of Sheet Metal Assemblies

    Författare :Alexander Govik; Larsgunnar Nilsson; Ramin Moshfegh; Kjell Mattiasson; Linköpings universitet; []
    Nyckelord :;

    Sammanfattning : The increased complexity of products and narrow lead times for product development have intensified the use of virtual prototyping, also called simulation-based design. The simulation of each individual manufacturing process is an important part of product development, However it is also necessary to study the complete sequences of manufacturing processes. LÄS MER

  7. 10. Hydro-mechanical forming of aluminium tubes : on constitutive modelling and process design

    Författare :Mikael Jansson; Larsgunnar Nilsson; Odd Sture Hopperstad; Linköpings universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Hydroforming; Aluminium Extrusions; Anisotropic material; Solid mechanics; Fastkroppsmekanik;

    Sammanfattning : Tube hydroforming is a forming method which has several advantages. By using pressure in combination with material feeding it is possible to manufacture products with high structural integration and tight dimensional tolerances. The forming method is especially suited for aluminium alloys which have a relatively low ductility. LÄS MER