Sökning: "Material failure model"
Visar resultat 21 - 25 av 145 uppsatser innehållade orden Material failure model.
21. Understanding the correlation between molecular structure of chilled dairy creams and the risk of environmental stress cracking in Tetra Pak® carton packages
Master-uppsats, Lunds universitet/Livsmedelsteknik och nutrition (master)Sammanfattning : Multilayer food packaging are lined with an inner layer of plastic and has excellent barrier properties. However, plastics lose their mechanical properties after being exposed to certain conditions; the combination of factors generates failures in the material such as the appearance of cracks, this phenomenon is known as environmental stress cracking (ESC). LÄS MER
22. Strain rate-dependent mechanical properties of high-density polyethylene(HDPE)
Uppsats för yrkesexamina på avancerad nivå, Blekinge Tekniska Högskola/Institutionen för maskinteknikSammanfattning : In today’s packaging industry HDPE is widely used and correct understanding of itsproperties and how to model them is of vital importance. HDPE is a semi-crystallinepolymer with a known strain rate dependence, that is a higher yield and lower strainto failure at higher strain rates. LÄS MER
23. Att få människor att utrymma vid ett dammbrott, svårare i praktiken än teorin? : Faktorer som påverkar en utrymning utifrån ett individ- och tjänstemannaperspektiv
Master-uppsats, Karlstads universitet/Institutionen för samhälls- och kulturvetenskap (from 2013)Sammanfattning : Introduktion: Dammbrott är en olycka som har en låg sannolikhet att ske men om den skulle inträffa ha katastrofala konsekvenser. Ett område som skulle drabbas vid ett dammbrott i Luleälven är Luleå kommun som ligger i mynningen av Luleälven. LÄS MER
24. Non-Linear strain paths in Sheet Metal Forming
Uppsats för yrkesexamina på avancerad nivå, Blekinge Tekniska Högskola/Institutionen för maskinteknikSammanfattning : Today's automotive requirements have resulted in complex Sheet Metal Forming (SMF) processes of Sheet Metal (SM) with reduced formability, and thus it is crucial to be able to predict formability accurately to prevent material failure during SMF. Formability predictions today utilize Forming Limit Curves (FLC)s in Finite Element Analysis (FEA), but FLCs are not valid for the Non-Linear Strain Paths (NLSP)s generated during SMF. LÄS MER
25. Tensile strength reduction for insufficient thread engagement A FEM study of a wall-shoe assembly
Master-uppsats, KTH/HållfasthetsläraSammanfattning : The purpose of this master thesis is to determine whether or not it exist, a model that can describethe reduction in strength, due to missing threads in a bond between a bolt and nut. And how thereduction in strength might effect a wall-shoe assembly, used to connect a wall to another wall or aconcrete base plate. LÄS MER