Sökning: "Icke linjär FE-analys"

Hittade 5 uppsatser innehållade orden Icke linjär FE-analys.

1. 1. Linear and non-linear FE-analysis of cracking behavior of wing walls in integral bridges

   Uppsats för yrkesexamina på avancerad nivå, Lunds universitet/Avdelningen för Konstruktionsteknik

   Författare :Andreas Ekman; Christoffer Sandin; [2018]
   Nyckelord :Non linear FE-modelling; Concrete Damage Plasticity; Wing wall; Crack propagation; Serviceability Limit State; Slab Frame Bridge; Technology and Engineering;

   Sammanfattning : Wing walls on slab frame integral bridges has traditionally been designed for mainly earth pressure and its self-weight. It has also been designed separately from the rest of the bridge. Traditionally no 3D effects have been considered in the design of the wing walls. LÄS MER

3. 2. FE-analys av luftinlopp samt karaktärisering av EPDM-gummi

   Master-uppsats, Lunds universitet/Hållfasthetslära

   Författare :Linda Johannesson; [2015]
   Nyckelord :icke-linjär; materialstyvhet; styvhet; lasthistorik; temperatur; töjningshastighet; töjningsamplitud; töjning; linjär-elastisk; linjärelastisk; hyperelastisk; kurvanpassning; EPDM-gummi; luftinlopp; turbokrök; gummibälg; lastbil; gummi med fyllmedel; linjär analys; deformation; non-linear; stiffness; loading history; temperature; strain rate; strain amplitude; strain; hose; turbo; Catia GAS; Catia; Abaqus; FEM; FE-analysis; FE-simulations; linear elastic; hyperelastic; curve fitting; truck; Scania; EPDM; filled rubber; linear analysis; Technology and Engineering;

   Sammanfattning : The aim of this study was to examine if simplified linear analysis can be used to capture the complex and non-elastic behaviour that filled rubber exhibits. Linear analysis includes both linear elastic material models and a linear solving technique. LÄS MER

4. 3. Second-order FE Analysis of Axial Loaded Concrete Members According to Eurocode 2

   Master-uppsats, KTH/Betongbyggnad

   Författare :Nessa Yosef Nezhad Arya; [2015]
   Nyckelord :Second-order; nonlinear; slender reinforced concrete column; ABAQUS; FE analysis; curvature method; nominal stiffness method; eccentrically loaded; benchmark experiment; parametric study; Andra ordningens effekt; icke-linjär; slank armerad betongpelare; ABAQUS; FE-modellering; krökningsmetoden; styvhetsmetoden; excentrisk last; utvärderingsförsök; parameterstudie;

   Sammanfattning : A nonlinear finite element analysis was performed for an axial loaded reinforced concrete column subjected to biaxial bending taking into account second-order effects. According to Eurocode there are two ways to take second-order effects into consideration: nonlinear FE analysis and hand calculation based on the simplified methods explained in Eurocode 2. LÄS MER

5. 4. Shear cracks in reinforced concrete in serviceability limit state

   Master-uppsats, KTH/Betongbyggnad

   Författare :Alexander Chemlali; Rickard Norberg; [2015]
   Nyckelord :Shear cracks; Serviceability limit state; Modified compression field theory; Reinforced concrete panels; Non-linear FE analysis; Wing wall; Skjuvsprickor; Bruksgränstillstånd; Modifierad tryckfältsteori; Armerade betongpaneler; Icke linjär FE-analys; Vingmur;

   Sammanfattning : Shear cracks are formed when high oblique tensile stresses, e.g. in thin webs, exceed the tensile strength. A known example of this phenomenon is the extensive shear cracks that were found on the box-girder bridges Gröndal and Alvik, which were mainly caused by insufficient amount of shear reinforcement. LÄS MER

7. 5. Local limit load solutions for semi-elliptical surface cracks in plates subjected to combined membrane load and bending load.

   Magister-uppsats, KTH/Hållfasthetslära (Inst.)

   Författare :Wilhelm Novak; [2014]
   Nyckelord :;

   Sammanfattning : Local limit load solutions for plates containing semi-elliptical surface cracks subjected to pure membrane loading cases, pure bending loading cases and combinations of the two are determined using non-linear finite element analysis. Both loading cases that open the crack and loading cases that close the crack are considered. LÄS MER