Essays about: "Crack Initiation"

Showing result 1 - 5 of 34 essays containing the words Crack Initiation.

  1. 1. Fracture simulation with a hyperelastic phase field model

    University essay from KTH/Hållfasthetslära

    Author : Adrien Fradet; [2023]
    Keywords : Fracture; Phase field modeling; Hyperelasticity; Brott; fasfält-methoden; hyperelasticite;

    Abstract : The phase field method is a versatile tool to study crack initiation and propagation in systems with complex geometries. Based on a variational formulation of the equilibrium equations, the sharp crack topology is regularized by a crack with diffusive edges and the damage is described by a continuous phase field variable. READ MORE

  3. 2. Standardization in additivemanufacturing : Recommended parameters and fixture solutions for hybrid printing

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

    Author : Patrik Andersson; [2023]
    Keywords : Additiv tillverkning; Standardisering; PBF-LB;

    Abstract : This study analyses and examines the hybrid printing process at Uddeholms AB in Hagfors.The objective of this study is to present recommended parameters to achieve optimal printingresults in a newly developed steel as well as a steel powder material designed for additivemanufacturing. READ MORE

  4. 3. Mechanical design guidelines and criteria for mooring components in wave energy devices : Finding the optimum chain and shackle parameters

    University essay from Uppsala universitet/Tillämpad mekanik

    Author : Arvin Modiri; [2022]
    Keywords : Chain; shackle; finite element method; wave energy converter; WEC; Kedja; kätting; schackel; finita element metoden; vågkraftverk;

    Abstract : Obtaining the perfect renewable energy source is one of the most important questions of our lifetime. One renewable energy source that could be of interest in this question because of the characteristics of the power that could be extracted from it is wave energy. READ MORE

  5. 4. Micro-CT based finite element models for mechanical strength assessment of glass ceramic scaffolds obtained through the robocasting technique

    University essay from KTH/Hållfasthetslära

    Author : Gustav Thessén; [2022]
    Keywords : µ-CT modelling; phase-field method; bio-glass scaffolds; strength assessment; Mikrotomografi; μ-CT; fasfältsmetoden; bio-glas stödstrukturer; brottgräns;

    Abstract : In this thesis, micro computed tomography (μ−CT) scans of a bio-glass scaffold produced by the robocasting technique was used to create finite element method (FEM) models with the purpose of determining its mechanical strength. Prior to this, a Matlab script was used to create several simplified geometries of the scaffold in an effort to determine the importance of scaffold design parameters (such as the fiber compenetration between two adjacent printing planes) on the strength of the scaffold. READ MORE

  6. 5. Shear Failure of Steel Fiber and Bar Reinforced Concrete Beams Without Stirrups : Predictions based on Nonlinear Finite Element Analyses

    University essay from KTH/Betongbyggnad

    Author : David Andersson; [2022]
    Keywords : Nonlinear finite element analysis; Shear failure; Fiber reinforced concrete beams; ATENA;

    Abstract : Shear failure in concrete beams are often brittle in nature and potentially dangerous without adequatereinforcing measures. In design of concrete, it is commonly recommended to install transversalreinforcement along the shear span to induce a more ductile structural response, improving the shearcapacity all together and providing sufficient warning prior to collapse. READ MORE