Essays about: "Diskontinuitet"

Showing result 1 - 5 of 8 essays containing the word Diskontinuitet.

1. 1. Numerical analysis of a bearing strength in delaminated composite joint

   University essay from KTH/Lättkonstruktioner, marina system, flyg- och rymdteknik, rörelsemekanik

   Author : Olavi Kukkonen; [2023]
   Keywords : Bearing strength; Single-lap shear; Delamination; Countersinking; Hole size;

   Abstract : Composite structures are commonly joined using adhesive or mechanical joints, withmechanical joints being preferred when components need to be removable for maintenancepurposes. However, the presence of mechanical joints introduces a discontinuity in theload path, which can serve as an initiation point for failure and needs to be taken intoaccount in the design of the joint. READ MORE

3. 2. Statistical Survey of Earth’s Magnetopause Using MMS Data : Pressure Balance, Total Pressure Contributions and Magnetopause Velocity near the Subsolar Point, Dawn- and Dusk Flanks

   University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

   Author : Arthur Grönlund; [2021]
   Keywords : Magnetopause; Magnetosheath; Magnetosphere; Pressure balance; Total pressure contributions; Magnetopause velocity;

   Abstract : The magnetopause is an important feature in near-Earth space, where the continuously emitted solar wind from the sun meets the magnetic field of the Earth. This boundary region between the so-called magnetosheath on the outside and magnetosphere on the inside is a constantly back-and-forth moving discontinuity upheld by a pressure balance on both sides, upon which an important process in mass and energy transportation through the universe called magnetic reconnection occurs. READ MORE

4. 3. 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

5. 4. Crack growth based FEM with embedded discontinuities

   University essay from KTH/Hållfasthetslära

   Author : David Lindblom; [2021]
   Keywords : PUFEM; Fracture Mechanics; J2-plasticity; FEAP; Strong discontinuity; Variational formulation; XFEM; PUFEM; Brottmekanik; J2-plasticitet; FEAP; Diskontinuitet; variationskalkyl;

   Abstract : In recent years there have been a major developments in the computational mechanics community when it comes to modelling of fracture mechanics. There are now several well established numerical methods that are implemented in commercial programs such as: Phase Field Modelling, Enhanced Assumed Strain (EAS), Smeared Crack Methods, Extended Finite Element Method (XFEM) and Partition of Unity Finite Element Method (PUFEM). READ MORE

6. 5. Material Properties of Adhesive Joint

   University essay from KTH/Hållfasthetslära

   Author : Shuyue Wang; [2020]
   Keywords : ;

   Abstract : The development of the commercial 5G network with high-frequency mmWave requires tighter base station grid, which increases the demand for smaller and more unobtrusive products. One way to connect materials of different properties and keeping the product size small is to use adhesive joints instead of screw joints. READ MORE