Essays about: "ls dyna"

Showing result 11 - 15 of 91 essays containing the words ls dyna.

  1. 11. Linear Impact of Bicycle Helmet – Experimental Testing and FE-modelling

    University essay from KTH/Hållfasthetslära

    Author : Ludvig Dahlin; Ebba Larsson Regnström; [2022]
    Keywords : FEM; Finite element method; bicycle helmet; impact modelling; solid mechanics; FEM; Finita element-metoden; cykelhjälm; islagsmodellering; hållfasthetslära;

    Abstract : The aim with this master thesis was to set up a FE-simulation of an impact test of a bike helmet in LS-DYNA that correlates well with the peak acceleration score of a real life impact test. Furthermore, a parametric study has been performed in LS DYNA to investigate the robustness of the model, as well as to see which parameters have a great influence on the peak acceleration score. READ MORE

  3. 12. Non-Linear strain paths in Sheet Metal Forming

    University essay from Blekinge Tekniska Högskola/Institutionen för maskinteknik

    Author : Anton Eriksson; [2021]
    Keywords : 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 .;

    Abstract : 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. READ MORE

  4. 13. A bonded discrete element approach to simulate loading with hydraulic mining excavators

    University essay from Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

    Author : Carl Andersson; [2021]
    Keywords : DEM; bonded DE; granular material; hydraulic excavator; wear; Archard s wear law; LS-DYNA; simulation;

    Abstract : When operating hydraulic mining excavators the loading equipment is exposed to harsh conditions which lead to extensive wear of the equipment, especially the bucket and bucket teeth. Simulations are used to better understand the wear development and to evaluate new methods to operate excavators more efficiently. READ MORE

  5. 14. Continuum damage modeling of delamination in paperboard

    University essay from Lunds universitet/Institutionen för byggvetenskaper; Lunds universitet/Hållfasthetslära

    Author : Erik Jakobsson; [2021]
    Keywords : Creasing; Folding; MD-direction; EB material model; LS-Dyna; eGISSMO; Technology and Engineering;

    Abstract : This work concerns the creasing and folding of a continuum paperboard material model developed by Eric Borgqvist. Creasing is an operation that induces permanent deformation in the material, undertaken for the folding to be performed along a straight fold line without any in-plane cracks. READ MORE

  6. 15. Analysis of wear life and mechanical stability for wear steel

    University essay from Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

    Author : Alexandra Uusaro; [2021]
    Keywords : ;

    Abstract : This thesis work is carried out in collaboration with Olofsfors AB. They manufacture steel products such as tracks and chains for forest machines and wear steel for plows and graders. The focus of this project is on wear steel. READ MORE