Essays about: "mesh stiffness"

Showing result 16 - 20 of 29 essays containing the words mesh stiffness.

  1. 16. Offset modeling of shell elements : A study in shell element modeling using Nastran

    University essay from Linköpings universitet/Mekanik och hållfasthetslära

    Author : David Klarholm; [2016]
    Keywords : Offset shell elements; finite element; Nastran; shell element modeling; Rigid body connection; Rigid links; Kirchhoff shells; Multipoint constraint;

    Abstract : At Saab Aerostructures they are manufacturing a lot of parts for Airbus and Boeing. When these components are investigated using finite element analysis four-node Kirchhoff shell elements and a very fine mesh is often used. READ MORE

  3. 17. Experimental analysis of limitations in the strut-and-tie method

    University essay from Lunds universitet/Avdelningen för Konstruktionsteknik

    Author : Mikael Wahlgren; Niels Bailleul; [2016]
    Keywords : Strut-and-Tie method; Reinforced concrete; Concrete Damaged Plasticity; Fracture energy; Technology and Engineering;

    Abstract : One of the overall main purposes for a structural engineer is to design structures and structural elements so that they meet society’s safety requirements, yet use as little material as possible. In order to do so, the designer has to understand and simplify a complex reality. READ MORE

  4. 18. A Cut-Cell Implementation of the Finite Element Method in deal.ii

    University essay from Uppsala universitet/Institutionen för informationsteknologi

    Author : Afonso Alborghetti Londero; [2015]
    Keywords : ;

    Abstract : The modeling of problems where the boundary changes significantly over time may become challenging as the mesh needs to be adapted constantly. In this context, computational methods where the mesh does not conform to the boundary are of great interest. READ MORE

  5. 19. Anisotropic material modeling and impact simulation of a brush cutter casing made of a short fiber reinforced plastic

    University essay from Linköpings universitet/Hållfasthetslära; Linköpings universitet/Tekniska högskolan

    Author : Oskar Norman; [2014]
    Keywords : anisotropic material modeling; short fiber reinforced plastics; impact simulation; Digimat; LS-DYNA;

    Abstract : A popular way to reduce weight in industrial products without compromising the strength or stiffness is to replace components made of metal by plastics that have been reinforced by glass fibers. When fibers are introduced in a plastic, the resulting composite usually becomes anisotropic, which makes it much more complex to work with in simulation software. READ MORE

  6. 20. A comparison of two multilevel Schur preconditioners for adaptive FEM

    University essay from Avdelningen för beräkningsvetenskap

    Author : Christian Karlsson; [2014]
    Keywords : computational science; PDE; partial differential equations; FEM; finite element method; adaptive mesh refinement; Schur complement; multilevel method; iterative method; conjugate gradient method; beräkningsvetenskap; PDE; partiella differentialekvationer; FEM; finita elementmetoden; adaptivt beräkningsnät; adaptiv mesh; Schurkomplement; multilevelmetod; iterativ metod; konjugerade gradientmetoden;

    Abstract : There are several algorithms for solving the linear system of equations that arise from the finite element method with linear or near-linear computational complexity. One way is to find an approximation of the stiffness matrix that is such that it can be used in a preconditioned conjugate residual method, that is, a preconditioner to the stiffness matrix. READ MORE