Sökning: "Gradient plasticity"
Visar resultat 1 - 5 av 30 avhandlingar innehållade orden Gradient plasticity.
1. Computational modeling of polycrystals using gradient crystal plasticity
Sammanfattning : This thesis treats the modeling of grain size dependence inmicrostructure models of metals. It is shown how gradient hardening, in a thermodynamically consistent fashion, can be included into a crystal plasticity model, which is used as the constitutive model in each grain of the polycrystal. LÄS MER
2. On computational homogenization of gradient crystal inelasticity
Sammanfattning : Crystal inelasticity is the main modeling technique employed to study the mechanical behavior of polycrystalline metallic materials. This class of models has the capability to represent micromechanical phenomena such as plastic slip, grain boundary interactions, and dislocation pile-up. LÄS MER
3. Strain Gradient Plasticity Modelling of Precipitation Strengthening
Sammanfattning : The introduction of particles and precipitates into a matrix material results in strengthening effects. The two main mechanisms involved in this matter are referred to as Orowan and shearing. To numerically study this phenomenon is the motivation to the research done, which is presented here in this thesis. LÄS MER
4. Phenotypic plasticity and local adaptation in tadpoles
Sammanfattning : Amphibian larvae are plastic in many traits. Can plasticity buffer population divergence, so that local adaptation is more common in non-plastic traits? I argue that this may be the case for adaptive plastic responses. LÄS MER
5. From geography to genes: evolutionary perspectives on salinity tolerance in the brackish water barnacle Balanus improvisus
Sammanfattning : How species respond to changes in their environment is a fundamental question in biology. This has become an increasingly important issue as anthropogenic effects of climate change and biological invasions have major impacts on marine ecosystems worldwide. LÄS MER