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Visar resultat 1 - 5 av 12 uppsatser som matchar ovanstående sökkriterier.
1. Finite Element Macro-modeling of a Historical Masonry Building : Influence of Isotropic vs Anisotropic Plastic Material Model Assumption in Static Analysis
Master-uppsats, KTH/Bro- och stålbyggnadSammanfattning : In this study, a macro-modeling strategy is implemented in a bearing wall with arch openings in an existing historical masonry building. This is to investigate what differences and similarities can be observed from the assumption of an orthotropic versus an isotropic constitutive material model. LÄS MER
2. FE Simulation of protective insulation of catalysts in exhaust after-treatment systems of trucks and buses : Investigation and characterization of catalytic converter support mat material for accurate modeling in finite element simulations
Master-uppsats,Sammanfattning : The increase of new and ever more stringent emission legislation has brought about with it a surge in the demand for more sustainable automotive solutions. This has particularly been the case for automobiles, including heavy-duty vehicles like trucks and buses, with internal combustion engines, which now require the design and manufacturing of more durable and reliable components. LÄS MER
3. Validation of An Iteration Free Material Model for Paperboard (NEO)
Uppsats för yrkesexamina på avancerad nivå, Lunds universitet/Hållfasthetslära; Lunds universitet/Institutionen för byggvetenskaperSammanfattning : The NEO model, developed by Lindström (2019) for paperboard, is a non-linear material model that utilizes empirically based constitutive relations with switches to mimic elastic-plastic responses. Due to the explicit definition of the constitutive relations, the NEO model does not require a constitutive equilibrium loop. LÄS MER
4. Shear Failure of Steel Fiber and Bar Reinforced Concrete Beams Without Stirrups : Predictions based on Nonlinear Finite Element Analyses
Master-uppsats, KTH/BetongbyggnadSammanfattning : 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. LÄS MER
5. Machine learning for constitutive modeling
Kandidat-uppsats, KTH/Skolan för teknikvetenskap (SCI)Sammanfattning : Constitutive modeling of nonlinear materials is a computationally complex and time-intensive process. To mitigate this, a neural network was used to simulate complex behaviors of non-linear materials. With supervised learning the machine learning model was able to predict the stresses in a material when given the strains. LÄS MER
