Search for dissertations about: "elastic plastic bending"

Showing result 1 - 5 of 21 swedish dissertations containing the words elastic plastic bending.

  2. 1. Mechanical Characterization of Engineering Materials by Modal Testing

    Author : Daniel Larsson; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; material variability; modal testing; non-destructive test methods; damping ratios; timber beams; plastic panels; aluminium panel; elastic constants; concrete curing; wood-based panels; solids; high-strength concrete; anisotropic materials;

    Abstract : This thesis deals with the use of modal testing for establishing elastic constants of engineering materials and for indicating material variability in terms of stiffness and damping properties. The methodology using modal testing techniques, is applied to timber beams, high strength concrete prisms, wood-based panels (oriented strand board and chipboard), an aluminium alloy panel and plastic laminate panels (high-pressure laminate). READ MORE

  4. 2. Plastic design of steel bridge girders

    Author : Frank Axhag; Luleå tekniska universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Steel Structures; Stålbyggnad;

    Abstract : This thesis assesses the feasibility of a modified plastic design method for continuous steel or composite bridges with slender I-girders. The feasibility evaluation of the design method is closely connected to the moment-rotation relationship of the I-girders at internal supports. READ MORE

  5. 3. Prediction of springback in sheet metal forming: with emphasis on material modeling

    Author : Per-Anders Eggertsen; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Springback; Hardening law; Elastic degradation; Yield surface; Simulation; Bauschinger effect;

    Abstract : The prediction of springback is probably the area in sheet metal forming simulation, where the least success has been achieved in terms solution accuracy. The springback is caused by the release of the residual stresses in the work piece after the forming stage. READ MORE

  6. 4. Fabrication and Characterization of Zinc Oxide Nanostructures for Piezoelectric, Mechanical and Electrical Applications

    Author : Muhammad Yousuf Soomro; Magnus Willander; Omer Nur; Christian Falconi; Linköpings universitet; []
    Keywords : Nanotechnology; Zinc oxide; nanowires nanorods nanotubes; piezoelectric effect; nanogenerator; flexible substrate; p-type polymers; elastic modulus; LEDs; electrical characteristics;

    Abstract : Nanotechnology, the science of manipulating materials on an atomic or molecular scale is one of the fastest growing areas of research and technology. Nanotechnology has a vast range of applications in medicine, electronics, biomaterials and energy production. New developments in nanotechnology are growing all the time. READ MORE

  7. 5. Prediction of springback in sheet metal forming

    Author : Per-Anders Eggertsen; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Hardening law; Bauschinger effect; Springback; FE-simulation; Yield condition; Elastic stiffness degradation;

    Abstract : The prediction of springback is probably the area in sheet metal forming simulation, where the least success has been achieved in terms solution accuracy. The springback is caused by the release of the stresses in the workpiece after the forming stage. READ MORE