Sökning: "LS-Dyna"

Visar resultat 1 - 5 av 70 uppsatser innehållade ordet LS-Dyna.

  1. 1. Extraction of tool reaction forces using LS-DYNA and its use in Autoform sheet metal forming simulation

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

    Författare :Esbjörn Zachén; [2019]
    Nyckelord :Sheet Metal Forming; Stamping Die; blank holder; Structural Analysis; Finite Element Simulation;

    Sammanfattning : In product development there is still potential to decrease lead times with faster and more accurate simulations. The objective of this thesis was to study whether Finite Element (FE) simulations using explicit LS-DYNA to extract reaction forces from sheet metal forming tools during forming, could be used to improve existing FE models in sheet metal forming software AutoForm. LÄS MER

  2. 2. Sheet Metal Forming Simulations with Elastic Dies: Emphasis on Computational Cost

    Master-uppsats, Blekinge Tekniska Högskola/Institutionen för maskinteknik

    Författare :Sara Allesson; [2019]
    Nyckelord :Elastic Sheet Metal Forming Simulation; Computational Cost; Decomposition; LS-DYNA; Elastisk plåtformningssimulering; beräkningskostnad; dekomposition; LS-DYNA;

    Sammanfattning : The car industry produces many of their car parts by using sheet metal forming, where one of the most time-consuming phases is the development and manufacturing of new forming tools. As of today, when a new tool is to be evaluated in terms of usability, a forming simulation is conducted to predict possible failures before manufacturing. LÄS MER

  3. 3. Numerical Methods for Simulating the Metal Shearing Process : A Novel Numerical Model for the Punching of Metals

    Uppsats för yrkesexamina på avancerad nivå, Luleå tekniska universitet/Material- och solidmekanik

    Författare :Andreas Svanberg; [2019]
    Nyckelord :Punching; Blanking; Smoothed Particle Galerkin; SPG; LS-DYNA; FEM; Metal shearing; cutting; particle method; thesis; Stansning; klippning;

    Sammanfattning : When dealing with the separation of materials, the metal shearing process such as punching, is widely used in theindustry due to its time efficient manner. There is however, a need to better understand the process in order toimprove quality of the final product. LÄS MER

  4. 4. Industrial Sheet Metal Forming Simulation with Elastic Dies

    Master-uppsats, Blekinge Tekniska Högskola/Institutionen för maskinteknik; Blekinge Tekniska Högskola/Institutionen för maskinteknik

    Författare :Markus Lind; Viktor Sjöblom; [2018]
    Nyckelord :Elastic Stamping Dies; FEA; LS-Dyna; Sheet Metal Forming; Structural Analysis;

    Sammanfattning : As part of the development process for new stamping dies, in the automotive sheet metal forming (SMF) industry, the majority of all forming operations are simulated with the Finite Element Method (FEM) before the dies are manufactured. Today, these simulations are conducted with rigid tools under the assumption that there are no tool deformations. LÄS MER

  5. 5. Validation of blast simulation models via drop-tower tests

    Uppsats för yrkesexamina på avancerad nivå, Umeå universitet/Institutionen för fysik

    Författare :Joakim Rydman; [2018]
    Nyckelord :Screw; bolt; screw joint; bolted connection; simulation; model; FEM; FEA; finite element; LS-DYNA; drop-tower tests; validation;

    Sammanfattning : This study aims to validate a screw joint simulation model used by BAE Systems in LS-DYNA during blast simulations. It is important that the screw joint simulation model is physically correct, since the simulation results can influence major design decisions. LÄS MER