Sökning: "Strain gradient"

Visar resultat 11 - 15 av 76 avhandlingar innehållade orden Strain gradient.

  1. 11. FE-Simulation of Metal Cutting Processes

    Författare :Ahmet Semih Ertürk; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Metal cutting; Ductile fracture; Gradient damage; Finite element method; Turning; Machining; Inverse identification;

    Sammanfattning : This thesis deals with the finite element (FE) simulation of machining processes. Realistic simulation of metal cutting processes enables a more resource-efficient machinability assessment for a given material in terms of cutting forces, chip shape and tool wear at different ranges of cutting conditions. LÄS MER

  3. 12. Active cellular forces in variable mechanical microenvironments

    Författare :Adele Khavari; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Traction force; Gradient substrate; Alginate 3D culture; Durotaxis; mechanics;

    Sammanfattning : Our bodies are immensely complex structures, with various systems, organs, and processes that are not only biochemically driven, but strongly dependent on physical mechanics.  At the heart of all these processes are cells, which must generate forces to adhere, spread, differentiate, grow, and move. LÄS MER

  4. 13. On the Modelling and Numerics of Gradient-Regularized Plasticity Coupled to Damage

    Författare :Thomas Svedberg; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : This thesis is primarily concerned with issues that arise in conjunction with the modelling of localization phenomena in solids using gradient-regularized plasticity with coupling to damage. The thermodynamic framework for a larger class of models is established, whereby gradients of the internal variables are included as arguments of the free energy. LÄS MER

  5. 14. Abdominal Aortic Wall Mechanics - Stress, Strain and Stiffness in A Medical Perspective : An Experimental Study in Man

    Författare :Jerker Karlsson; Jan Engvall; Toste Länne; Jonas Stålhand; Carl-Johan Carlhäll; Magnus Cinthio; Linköpings universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES;

    Sammanfattning : Background:  The stiffness of the abdominal aorta is considered a significant factor affecting the morbidity and mortality of cardiovascular disease. Estimating vascular stiffness is an integral part in cardiovascular risk assessment. LÄS MER

  7. 15. Nanoindentation on coatings

    Författare :Zhi-Hui Xu; KTH; []
    Nyckelord :nanoindentation; Berkovich; thin coatings; deformation behaviour; mechanical properties; mechanism-based strain gradient theory; dislocations; cracks; pileup; indentation size effect; atomic force microscopy; diamond-like-carbon; alumina; gold; alumi;

    Sammanfattning : .... LÄS MER