Sökning: "Damage Mechanics"

Visar resultat 1 - 5 av 35 uppsatser innehållade orden Damage Mechanics.

1. 1. Technical requirements for mooring goods in the Swedish Navy

   Master-uppsats, KTH/Hållfasthetslära

   Författare :Dennis Ekman; [2023]
   Nyckelord :Mechanics; Solid Mechanics; Navy; FMV; Defence; Ship; Boat; Hawser; Mooring; Mooring goods; FEM; Mekanik; Hållfasthetslära; Marinen; Marin; Flottan; FMV; Försvaret; Skepp; Båt; Tågvirke; Förtöjningsgods; Tamp;

   Sammanfattning : The objective of this thesis is to generate and enhance technical specifications for mooring equipment designated for the Swedish Navy, as commissioned by the Swedish Defence Materiel Administration. The technical specifications will primarily emphasize the capacity to endure various load scenarios imposed by the Swedish Defence on the mooring equipment. LÄS MER

3. 2. Numerical Modelling of Combined Forming and Punching of Sheet Metal for Heat Exchanger Applications

   Uppsats för yrkesexamina på avancerad nivå, Lunds universitet/Hållfasthetslära; Lunds universitet/Institutionen för byggvetenskaper

   Författare :Erik Stålbrand; [2023]
   Nyckelord :Solid Mechanics; Material Modelling; Damage Modelling; Sheet Metal Damage; Punching Simulation; Forming Simulation; Heat Exchanger; Technology and Engineering;

   Sammanfattning : In this work a strategy for numerical simulation of punching during concurrent pressing of stainless steel sheet metal has been investigated accounting for the stress triaxiality and Lode angle parameter. Modelling of the damage evolution of a sheet metal is a useful tool within the field of engineering and materials science, and can provide useful information regarding material capabilities in a design process. LÄS MER

4. 3. Validation of An Iteration Free Material Model for Paperboard (NEO)

   Uppsats för yrkesexamina på avancerad nivå, Lunds universitet/Hållfasthetslära; Lunds universitet/Institutionen för byggvetenskaper

   Författare :Samuel Thomas Staines; [2022]
   Nyckelord :Paperboard; orthotropic; Constitutive equilibrium free; Non-linear; Curve fit constitutive relation; switch-wise history dependence; total formulation; explicit constitutive relation; In-plane; Elastic-plastic; Technology and Engineering;

   Sammanfattning : 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

5. 4. Transformation of In-Flight Measured Loads to a Fatigue Test Spectrum

   Master-uppsats, Linköpings universitet/Mekanik och hållfasthetslära

   Författare :Patrick Dümig; [2022]
   Nyckelord :Aerospace engineering; Aircraft load spectra; ASIP; Crack growth; Fatigue testing; Flight loads; Flight test; Fracture mechanics; FSFT; In-flight measurements; Load spectrum reduction; Racetrack filtering; Strain gauge measurements;

   Sammanfattning : Fatigue is a well-recognized issue in lightweight and high-performance aircraft structures. As fatigue failures have led to serious accidents and caused significant economic impact in the past, design against fatigue is crucial. LÄS MER

7. 5. The influence of post-buckling damage on the tensile properties of single wood pulp fibers

   Master-uppsats, KTH/Hållfasthetslära

   Författare :Raphael Andreolli; [2021]
   Nyckelord :Solid Mechanics; single fiber testing; wood pulp fibers; post-buckling damage; experiments; development of testing methods; tensile properties; tensile stiffness; tensile strength; Hållfasthetslära; enskild fiber testning; pappersmassa fiber; skada efter knäckning; experiment; utveckling av testutrustning; dragegenskaper; dragstyvhet; draghållfasthet;

   Sammanfattning : The rapid growth of plastic waste from food packaging around the world demands renewable substitutes, such as natural fibers and biocomposites. Wood fibers are natural fibers extracted from trees and are commonly used in packaging. LÄS MER