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Št. zadetkov: 16
Zbornik recenziranih znanstvenih prispevkov na mednarodni ali tuji konferenci
Oznake: računalništvo;numerično modeliranje;posvetovanja;
Leto: 2007 Vir: Naravoslovnotehniška fakulteta (UL NTF)
Izvirni znanstveni članek
Oznake: lupine;velike rotacije;shells;large rotations;shell structures;finite rotation;
In this work we present interrelations between different finite rotation parametrizations for geometrically exact classical shell models (i.e. models without drilling rotation). In these kind of models the finite rotations are unrestricted in size but constrained in the 3-d space. In the finite elem ...
Leto: 2001 Vir: Fakulteta za gradbeništvo in geodezijo (UL FGG)
Izvirni znanstveni članek
Oznake: lupine;3d napetosti;higher-order shell model;3d constitutive equations;stress computation;
In this work we study the accuracy of modem higher-order shell finite element formulations in computation of 3d stress state in elastic shells. In that sense we compare three higher-order shell models: (i) with seven dislacement-like kinematic parameters, and (ii, iii) with six displacement-like kin ...
Leto: 2008 Vir: Fakulteta za gradbeništvo in geodezijo (UL FGG)
Objavljeni znanstveni prispevek na konferenci (vabljeno predavanje)
Oznake: lupine;končni elementi;modeli višjega reda;nekompatibilne oblike;shells;finite elements;higher order models;incompatible models;
We discuss a theoretical formulation of shell model accounting for through-the-thickness stretching, which allows for large deformations and direct use of 3d constitutive equations. Three different possibilities for implementing this model within the framework of the finite element method are examin ...
Leto: 2002 Vir: Fakulteta za gradbeništvo in geodezijo (UL FGG)
Izvirni znanstveni članek
Oznake: frame;failure analysis;shell-beam model;strong discontinuity;plasticity;softening hinge;
In this work we present a new modelling paradigm for computing the complete failure of metal frames by combining the stress-resultant beam model and the shell model. The shell model is used to compute the material parameters that are needed by an inelastic stress-resultant beam model; therefore, we ...
Leto: 2010 Vir: Fakulteta za gradbeništvo in geodezijo (UL FGG)
Izvirni znanstveni članek
Oznake: lupine;velike rotacije;časovne integracijske sheme;ohranitev energije;disipacija energije;shells;time-stepping schemes;energy conservation;energy decaying;finite rotations;nonlinear dynamics;finite elrments;
In this work we study the time-stepping schemes for shell models, which describe the shell-director vector motion by the finite rotations. Different possibilities for choosing director rotations are examined and their relationships are cast in terms of the commutative diagram. The Newmark time-stepp ...
Leto: 2003 Vir: Fakulteta za gradbeništvo in geodezijo (UL FGG)
Izvirni znanstveni članek
Oznake: gradbene konstrukcije;vgrajena neveznost;porušitev materiala;mehčanje;civil engineering;embedded discontinuity;material failure;softening;
We present a quadrilateral finite element with discontinuous displacement fields that can be used to model material failure in 2d brittle and ductile solids. The element provides mesh-objective results. The element's kinematics can represent linear displacement jumps along the discontinuity line in ...
Leto: 2010 Vir: Fakulteta za gradbeništvo in geodezijo (UL FGG)
Izvirni znanstveni članek
Oznake: plošče;ocena napake;modelske napake;plates;error analysis;finite element analysis;modelling;plate structures;
Purpose – The purpose of this paper is to address error-controlled adaptive finite element (FE) method for thin and thick plates. A procedure is presented for determining the most suitable plate model (among available hierarchical plate models) for each particular FE of the selected mesh, that is pr ...
Leto: 2009 Vir: Fakulteta za gradbeništvo in geodezijo (UL FGG)
Izvirni znanstveni članek
Oznake: lupinaste konstrukcije;dinamika;numerična analiza;shell structures;dynamics;numerical analysis;
Purpose – Aims to address the issues pertaining to dynamics of constrained finite rotations as a follow-up from previous considerations in statics. Design/methodology/approach – A conceptual approach is taken. Findings – In this work the corresponding version of the Newmark time-stepping sch ...
Leto: 2005 Vir: Fakulteta za gradbeništvo in geodezijo (UL FGG)
Izvirni znanstveni članek
Oznake: gradbeništvo;vstavljena nezveznost;hibridni končni elementi;porušitev materiala;embedded strong discontinuity;stress-hybrid finite element;non-homogeneous displacement jumps;material failure analysis;
Stress-hybrid quadrilateral finite element with embedded strong discontinuity for failure analysis of plane stress solids
Leto: 2013 Vir: Fakulteta za gradbeništvo in geodezijo (UL FGG)
Št. zadetkov: 16
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