Essays about: "LS-Dyna"

Showing result 16 - 20 of 91 essays containing the word LS-Dyna.

  1. 16. An Arbitrary Lagrangian-Eulerian Finite Element Method for Shock Wave Propagation: Validating Simulations of Underwater Explosions

    University essay from KTH/Numerisk analys, NA

    Author : Sebastian Sandström; [2021]
    Keywords : finite element; applied mathematics; computational mathematics; hydrocode; arbitrary lagrangian-eulerian; LS-DYNA; tillämpad matematik; beräkningsteknik; finita elementmetoden; hydrokod; arbitrary lagrangian-eulerian; LS-DYNA;

    Abstract : Underwater explosions are often modeled with Arbitrary Lagrangian-Eulerian (ALE) Finite Element Methods. The objective of this thesis is to validate the simulation method, with respect to the propagating shock wave. A two-dimensional axisymmetric model of a spherical TNT charge submerged in water is simulated using LS-DYNA. READ MORE

  3. 17. Structural Analysis of Underwater Detonations

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

    Author : Edvin Sjöstrand; [2021]
    Keywords : UNDEX; LS-Dyna; MMALE;

    Abstract : The knowledge how an object withstand an underwater detonation is critical within the defense industry. This is mostly done today with physicals test which are both time consuming and connected with high costs. READ MORE

  4. 18. Modelling and Evaluation of the Methods for Compression Testing of Thermoplastics

    University essay from KTH/Teknisk mekanik

    Author : Abdul Rahman Itani; [2021]
    Keywords : hermoplastics; polyamide 6; yield criteria; uniaxial stress; compression test; triaxiality; Mohr’s Circle; Lode Parameter; LS-DYNA; ermoplaster; polyamid 6; flyttspänningskriterier; enaxlig spänning; kompressionsprov; triaxialitet; Mohrs Cirkel; Lode Parameter; LS-DYNA;

    Abstract : The application of thermoplastics as load-carrying components in furniture applications is an attractive prospect at IKEA. Thermoplastics can be used instead of metal where advanced geometries and aesthetics are considered. READ MORE

  5. 19. Warpage Prediction of Electronic Underfill Components During Curing

    University essay from Umeå universitet/Institutionen för fysik

    Author : David Lindblom; [2021]
    Keywords : Warpage; viscoelastic;

    Abstract : To ensure the shelf life of a semiconductor, the integrated circuits are usually embedded in an epoxy molding compound (EMC) to shield it from stress and corrosion. The EMC is a viscoelastic material and is categorized as a thermoset. Working with viscoelastic material appose a challenge due to the cure-induced warpage. READ MORE

  6. 20. Numerical simulations of shear reinforced concrete beams subjected to blast loads

    University essay from KTH/Betongbyggnad

    Author : Anton Frank; Andreas Fristedt; [2021]
    Keywords : Numerical simulations; shear reinforcement; blast loads; dynamic shear failure; Numeriska simuleringar; tvärkraftsarmering; luftstötvåg; dynamiskt skjuvbrott;

    Abstract : Historical accidents and experimental investigations have made apparent that blast loaded concrete members are prone to fail in brittle shear rather than a ductile flexure mode. Air blasts from accidental detonations or explosives may cause severe damage to buildings and infrastructure and it is of great importance that load carrying members can withstand the impulse that arise to avoid progressive collapses. READ MORE