Essays about: "hyperelastic material"

Showing result 6 - 10 of 20 essays containing the words hyperelastic material.

  1. 6. Machine learning for constitutive modeling

    University essay from KTH/Skolan för teknikvetenskap (SCI)

    Author : Anna Robbins; Gustav Vittberg; [2021]
    Keywords : ;

    Abstract : Constitutive modeling of nonlinear materials is a computationally complex and time-intensive process. To mitigate this, a neural network was used to simulate complex behaviors of non-linear materials. With supervised learning the machine learning model was able to predict the stresses in a material when given the strains. READ MORE

  3. 7. Product Development and Finite Element Analysis of Polyurethane Press Shoe : Produktutveckling och finit element analys av press-sko i polyuretan

    University essay from Karlstads universitet/Fakulteten för hälsa, natur- och teknikvetenskap (from 2013)

    Author : Mikael Bergström; [2021]
    Keywords : FEM; Finite Element Analysis; Polyurethane Casting; PUR; Hyperelaticity; ABAQUS; Casting; Shoe Press; Press Shoe; Paper Making; Paper Machines; Tissue machine;

    Abstract : The press-section of a paper machine holds several different types of press rolls. One of the many press roll variants is the Valmet produced press roll, ViscoNip. This press roll utilizes an extended nip in order to increase the amount of water removed. READ MORE

  4. 8. Simulation of ultrasonic time of flight in bolted joints

    University essay from KTH/Hållfasthetslära

    Author : David Chlebek; [2021]
    Keywords : Acoustoelastic effect; User material subroutine; Murnaghan hyperelastic material model; Explicit FEM; Ultrasonic preload; Fortran; Akustoelastiska effekten; Användar material; Murnaghan hyperelastisk materialmodell; Explicit FEM; Ultraljudsmätning av klämkraft; Fortran;

    Abstract : Ultrasonic measurements of the preload in bolted joints is a very accurate method since it does not depend on the friction and other factors which cause difficulties for common methods. The ultrasonic method works by emitting an ultrasonic pulse into the bolt which is reflected at the end and returned to the transducer, the change in the time of flight (TOF) can be related to the elongation of the bolt and therefore the preload. READ MORE

  5. 9. Improving comfort simulations of sleeping mattresses for IKEA

    University essay from Lunds universitet/Innovation

    Author : Joel Elinder; [2020]
    Keywords : LS-Dyna; explicit finite element simulations; compressive testing; human soft tissue material models; mass scaling; hyperelastic material model validation; material validation; explicit timestep; Technology and Engineering;

    Abstract : It is beneficial for a furniture company like IKEA to objectively and accurately evaluate what makes a mattress comfortable. But what defines comfort? IKEA currently investigates mattress comfort through extensive real-life user testing. Through which, six parameters of comfort have been identified. READ MORE

  6. 10. Material Characterization for the Simulation of Drop Tests Against PMMA Sheets

    University essay from Jönköping University/JTH, Material och tillverkning

    Author : Arturo Sancho Montagut; [2020]
    Keywords : Abaqus; Polymers; PMMA; Acrylic; Simulation; Material Models; Hyperelasticity; Plasticity; Viscoelasticity; Drucker Prager; Yeoh; Drop Test; Luminaires;

    Abstract : There is a high demand for implementing simulations in the design and product devel-opment processes, avoiding the execution of costly tests on prototypes and giving thechance of discarding unsuitable designs, as well as exploring possible ones without much cost added.This project assignment is to find a suitable way to simulate drop tests on two typesof PMMA sheets, a material widely used on luminaire covers. READ MORE