Sökning: "Finite strains"

Visar resultat 1 - 5 av 73 avhandlingar innehållade orden Finite strains.

  1. 1. Modeling of coupled thermoplasticity at finite strains

    Detta är en avhandling från Div. of Solid Mechanics, Lund University, P.O. Box 118, SE-221 00 Lund

    Författare :Paul Håkansson; Lunds universitet.; Lund University.; [2007]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Mechanical engineering; hydraulics; vacuum technology; vibration and acoustic engineering; Maskinteknik; Heat generation; Phase transformation; Void growth; Thermoplasticity; hydraulik; vakuumteknik; vibrationer; akustik; Crystal plasticity; Finite element;

    Sammanfattning : In this thesis, models for simulation of inelastic phenomena, such as plastic anisotropy, texture evolution, void growth and phase transformation are presented. Special emphasized is put on the modeling of heat generation due to plastic work. All models are formulated within a thermodynamic framework that allows large deformations. LÄS MER

  2. 2. Nonlinear micromechanics of open-cell cellular solids

    Detta är en avhandling från Div. of Solid Mechanics, Lund University, P.O. Box 118, SE-221 00 Lund

    Författare :Per Hård af Segerstad; [2008]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; FEM; Finite strains; Foams; Micropolar theory; Constitutive modelling;

    Sammanfattning : An approach for modelling the response of open-cell cellular solids at finite strainsis developed. The model framework comprises a mechanistic formulation wherethe cellular solid is considered as a network of struts, each connecting two vertexpoints. LÄS MER

  3. 3. Behaviour and resistance of composite slabs experiments and finite element analysis

    Detta är en avhandling från Luleå : Luleå tekniska universitet

    Författare :Milan Veljkovic; Luleå tekniska universitet.; [1996]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Stålbyggnad; Steel Structures;

    Sammanfattning : Composite slab flooring systems are used in steel framed buildings as well as in conjunction with concrete, prestressed concrete and timber structures. Composite slabs consist of a thin-walled profiled steel sheet, reinforcement and in-situ cast concrete. LÄS MER

  4. 4. Generation of Patient Specific Finite Element Head Models

    Detta är en avhandling från Stockholm : KTH

    Författare :Johnson Ho; KTH.; [2008]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Injury Prevention; Patient Specific; Finite Element Head Model; Anatomical Structures; TECHNOLOGY; TEKNIKVETENSKAP;

    Sammanfattning : Traumatic brain injury (TBI) is a great burden for the society worldwide and the statisticsindicates a relative constant total annual rate of TBI. It seems that the present preventativestrategies are not sufficient. To be able to develop head safety measures against accidents ine.g. LÄS MER

  5. 5. 3D Finite Element Modeling of Cervical Musculature and its Effect on Neck Injury Prevention

    Detta är en avhandling från Stockholm : KTH

    Författare :Sofia Hedenstierna; KTH.; [2008]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Finite Element; Cervical Musculature; Neck injury prediction; Continuum Mechanics; Solid Elements; TECHNOLOGY; TEKNIKVETENSKAP;

    Sammanfattning : Injuries to the head and neck are potentially the most severe injuries in humans, since they may damage the nervous system. In accidents, the cervical musculature stabilizes the neck in order to prevent injury to the spinal column and is also a potential site for acute muscle strain, resulting in neck pain. LÄS MER