Sökning: "constitutive model"
Visar resultat 21 - 25 av 328 avhandlingar innehållade orden constitutive model.
21. Multiscale Constitutive Modeling of Heterogeneous Engineering Materials
Sammanfattning : This work deals with different methods used to determine heterogeneous constitutive model parameters for macro-scale finite element models, based on microstructural variations, caused by the manufacturing process. These methods could be applied to decrease modeling errors associated with the material behavior, improving the predictive capabilities of structural analyses in simulation-driven industrial product development. LÄS MER
22. Truck tyre rolling resistance : Experimental testing and constitutive modelling of tyres
Sammanfattning : Global warming sets a high demand to reduce the CO2 emissions of vehicles. In the European Union heavy-duty road transports account for 6 % of the total greenhouse gases and one of the main factors affecting these emissions is related to the rolling resistance of tyres. LÄS MER
23. Constitutive modeling of a nickel base superalloy : with a focus on gas turbine applications
Sammanfattning : Gas turbines are used where large amounts of energy is needed, typically as engines in aircraft, ferries and power plants. From an efficiency point of view it is desirable to increase the service temperature as much as possible. LÄS MER
24. Strain rate dependent material model for polymer composites
Sammanfattning : We propose a micromechanical model that is able to predict the nonlinear behaviour and failure of unidirectional fibre reinforced polymer composites subjected to dynamic loading conditions. This novel material model is heterogeneous on the micro level and homogeneous on the ply level. LÄS MER
25. Behaviour and modelling of a natural soft clay : triaxial testing, constitutive relations and finite element modelling
Sammanfattning : The main objectives if the research project have been to create an experimental basis for a more general theoretical modelling of Swedish clays and to improve the knowledge of the mechanical behaviour of natural soft clays. Another objective has been to investigate the effects of end restraint on the mechanical behaviour obtained in triaxial tests, by means of numerical simulations. LÄS MER