Search for dissertations about: "residual stress finite elements"
Showing result 1 - 5 of 12 swedish dissertations containing the words residual stress finite elements.
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1. Comprehensive numerical analysis of stress state in adhesive layer of joint including thermal residual stress and material non-linearity
Abstract : The main objective of this work is to improve understanding of the stress state in the adhesive layer of bonded joints and identify key parameters which govern performance of adhesive joints. This information is crucial for the prediction of the failure initiation and propagation with the further estimation of the durability and strength of adhesively bonded structures. READ MORE
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2. Simulation of additive manufacturing using a mechanism based plasticity model
Abstract : This thesis presents finite element (FE) simulations of additive manufacturing (AM) and physically based material modeling of alloy 625 and alloy 718. In recent years, there has been an increasing interest in AM and there has been a dramatic increase in publications in the field. READ MORE
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3. Fatigue crack growth experiments and analyses - from small scale to large scale yielding at constant and variable amplitude loading
Abstract : This thesis is on fatigue crack growth experiments and assessments of fatigue crack growth rates. Both constant and variable amplitude loads in two different materials are considered; a nickel based super-alloy Inconel 718 and a stainless steel 316L. READ MORE
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4. Mechanical Properties of Resistance Spot Welds in Lightweight Applications
Abstract : This licentiate thesis is concerned with residual stresses in aluminum alloy 6061-T6 resistance spot welded joint. Several topics related to mechanical strength of welded structures are treated such as; nugget size and microhardness and microstructures of weld zone and their influence on mechanical strength of welded structure, failure load measurement using tensile-shear test, resistance spot welding simulation, residual stress measurement by X-ray diffraction method and analysis effect of welding parameters on the mechanical strength and the residual stresses. READ MORE
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5. Colliding asperities : a tribological event on micro scale
Abstract : In order to predict and optimize energy efficiency, fuel consumption and service life, friction and wear need to be predetermined with higher accuracy than what is possible today. This prediction and optimization is crucial for the development of sustainable mechanical components and systems with excellent environmental performance. READ MORE