Sökning: "Barlat"

Hittade 3 uppsatser innehållade ordet Barlat.

  1. 1. Non-Linear strain paths in Sheet Metal Forming

    Uppsats för yrkesexamina på avancerad nivå, Blekinge Tekniska Högskola/Institutionen för maskinteknik

    Författare :Anton Eriksson; [2021]
    Nyckelord :Sheet metal forming SMF ; Non-Linear strain path NLSP ; Test procedures; Failure models; Finite Element FE ; Plåtformning; Icke-linjära töjningsbanor; Test procedurer; brott model; Finita Element FE .;

    Sammanfattning : Today's automotive requirements have resulted in complex Sheet Metal Forming (SMF) processes of Sheet Metal (SM) with reduced formability, and thus it is crucial to be able to predict formability accurately to prevent material failure during SMF. Formability predictions today utilize Forming Limit Curves (FLC)s in Finite Element Analysis (FEA), but  FLCs are not valid for the Non-Linear Strain Paths (NLSP)s generated during SMF. LÄS MER

  3. 2. Simulation of GPHE diagonal based on full material history

    Uppsats för yrkesexamina på avancerad nivå, Lunds universitet/Institutionen för byggvetenskaper; Lunds universitet/Hållfasthetslära

    Författare :Anna Gunnarsson; Jenny Hoang; [2021]
    Nyckelord :Technology and Engineering;

    Sammanfattning : The objectives for this thesis is to further develop a finite element analysis methodology where the material history is evaluated in every step. The processing of the plate from coil to fully formed plate mounted in a heat exchanger should be taken into consideration. Material phenomena such as necking and springback are important to capture. LÄS MER

  4. 3. Simulation of the anisotropic material properties in polymers obtained in thermal forming process

    Master-uppsats, Högskolan i Jönköping/JTH, Produktutveckling

    Författare :Ali Bazzi; Andreas Angelou; [2018]
    Nyckelord :Plastics; Acrylonitrile Butadiene Styrene; Vacuum Thermoforming; Strain Induced Anisotropy; Hyperelasticity; Ogden; Barlat; LS-DYNA; FEM Analysis; Forecasting Material Properties; Thickness Distribution; Process Simulation;

    Sammanfattning : In an attempt to improve the quality in finite element analysis of thermoformed components, a method for predicting the thickness distribution is presented. The strain induced anisotropic material behaviour in the amorphous polymers of concern is also taken into account in the method. LÄS MER