Essays about: "stress limit"

Showing result 1 - 5 of 80 essays containing the words stress limit.

  1. 1. Rock Wedge Stability Assessment : A Comparative Analysis of Limit Equilibrium and Discrete Element Methods

    University essay from Luleå tekniska universitet/Institutionen för samhällsbyggnad och naturresurser

    Author : Vilma Nordh; [2024]
    Keywords : Numerical modelling; wedge stability; 3DEC; UnWedge;

    Abstract : Rock wedge stability is a common concern in underground excavations. Since the wedge stability influences the support design, it is important to use a wedge stability analysis method that can capture factors like excavation geometry, joint parameters and properties, rock mass properties, rock cover, and stress field as accurately as possible. READ MORE

  3. 2. AC Gate Bias Stress of 4H-SiC MOSFETs : An investigation into threshold voltage instability of SiC Power MOSFETs under the influence of bipolar gate stress

    University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Author : Agnimitra Saha; [2023]
    Keywords : Silicon Carbide; Gate Bias Stress; Threshold Voltage; On-state Resistance; Temperature; kiselkarbid; gate spännings-stress; tröskelspänning; on-resistansen; temperatur;

    Abstract : Silicon Carbide, a wide band gap (WBG) semiconductor, has pushed electrical limits beyond Silicon (Si) when it comes to power electronics. It has offered the electrification of society showing promise for a greener future. READ MORE

  4. 3. Wildfire growth modelling in Sweden - a suitability assessment of available data

    University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Author : Henrik Hagelin; [2023]
    Keywords : Geography; GIS; Geographic Information Science; Physical geography; Prometheus; WiSE-FASS; The 2014 Västmanland wildfire; Wildfire growth modelling; Wildfire suppression support; Wildfire behaviour; MESAN; Earth and Environmental Sciences;

    Abstract : Wildfires are worldwide problems that stress societies by damaging their economies and they cause serious, sometimes fatal, health implications among the populations. In recent years, the rate of wildfire occurrence has increased as the global average temperature has risen. Because of global climate change, this rate is expected to continue rising. READ MORE

  5. 4. Evaluation of load distribution on ballasted reinforced concrete railway trough bridges

    University essay from Luleå tekniska universitet/Byggkonstruktion och brand

    Author : Alex Eriksson; [2023]
    Keywords : Concrete; numerical analysis; trough bridge; railway bridge; finite element model; discrete element method; Betong; numeriskanalys; trågbro; tågbro; finita elementmetoden; diskreta elementmetoden;

    Abstract : A significant portion of the reinforced concrete railway bridges in Sweden are reaching their designed lifespan and are scheduled to be demolished and replaced in the upcoming years. To limit the econom-icand environmental impact related to the replacement of existing railway infrastructure, a comprehen-siveevaluation of their capacity is required with the aim of extending its lifespan. READ MORE

  6. 5. Gatuträd för framtidens klimat och infrastruktur : förslag på lämpliga trädarter till ett stadsträdsarboretum i Ultuna

    University essay from SLU/Dept. of Urban and Rural Development

    Author : Malkolm Bonander; [2023]
    Keywords : Stadsträdsarboretum; gatuträd; kolmakadam; växtbädd; spårväg; infrastruktur; klimatförändringar; diversitet; exotiska arter;

    Abstract : Arbetet syftar till att inhämta och analysera aktuell kunskap och forskning för att ange kriterier för lämpliga trädarter och växtbäddar som kan möta infrastruktursatsningar i ett allt varmare klimat i urban miljö. Exploatering med tungt trafikerade gator skapar tuffa levnadsförhållanden för stadens gatuträd. READ MORE