Sökning: "Bauschinger effect"

Visar resultat 1 - 5 av 7 avhandlingar innehållade orden Bauschinger effect.

  1. 1. Prediction of springback in sheet metal forming

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

    Sammanfattning : 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. LÄS MER

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

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

    Sammanfattning : 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. LÄS MER

  4. 3. On constitutive modelling in metal plasticity

    Författare :Kenneth Axelsson; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; viscoplasticity; finite element; plasticity; Anisotropy; anisotropic strain hardening; Bauschinger effect; distortonal hardening; nonlinear hardening;

    Sammanfattning : .... LÄS MER

  5. 4. Analysis and modelling of plastic bending processes

    Författare :Zheng Tan; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Manufacturing Systems Engineering; Produktionsutveckling;

    Sammanfattning : It is well known that anisotropic properties of material allect forming of sheet metals and that non-homogeneous deformation across thickness of a bend gives rise to residual stresses. The interaction between material and process parameters determines, in a very complex manner, the formability of material. LÄS MER

  7. 5. Plastic behaviour of steel : experimental investigation and modelling

    Författare :Jonas Gozzi; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Steel Structures; Stålbyggnad;

    Sammanfattning : This thesis deals with the plastic behaviour of steel. It comprises an investigation with focus on biaxial tests and constitutive modelling. Tests were performed on one stainless steel grade in two different strength classes, C700 and C850, as well as one extra high strength structural steel grade. LÄS MER