Avancerad sökning
Visar resultat 1 - 5 av 371 avhandlingar som matchar ovanstående sökkriterier.
1. Effects of cracks and other geometrical changes on the vibration of structures : with special application to turbine blades
Sammanfattning : .... LÄS MER
2. Modelling Fiber Network Materials:Micromechanics, Constitutive Behaviour and AI
Sammanfattning : This thesis focuses on understanding the mechanical behavior of fiber-based materials by utilizing various modeling approaches. Particular emphasis is placed on their structural variability, anisotropic properties, and damage behavior. LÄS MER
3. Modeling of structural integrity of aged low alloy steels using non-local mechanics
Sammanfattning : Ageing of low alloy steels affects the structural integrity assessment as it most commonly causes embrittlement and a hardening of the material. This is due to theevolution of the microstructure during operation in the specific application. LÄS MER
4. Micro-mechanical characterization and modeling of paper and paperboard
Sammanfattning : Fiber networks made of cellulose fibers from trees are used as information carriers (paper) and as packaging (paperboard). This thesis investigates the mechanical performance of paper and paperboard via micro-mechanical modeling and presents new methods for the mechanical characterization of the micro scale, necessary in such models. LÄS MER
5. Continuum modelling of work hardening in precipitation hardened alloys
Sammanfattning : This thesis deals with prediction of macroscopic work hardening in a precipitation hardened alloy. The focus is on the particle contribution. A hierarchical modelling approach is adopted where work hardening in a representative material volume on the microscale is homogenized and used to represent the macroscopic hardening. LÄS MER