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Št. zadetkov: 13
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Oznake: večploskovna plastičnost;lupine;integracijski algoritmi;
In this work, we revisit the stress resultant elastoplastic geometrically exact shell finite element formulation that is based on the Ilyushin–Shapiro two-surface yield function with isotropic and kinematic hardening. The main focus is on implicit projection algorithms for computation of updated val ...
Leto: 2012 Vir: Fakulteta za gradbeništvo in geodezijo (UL FGG)
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Oznake: armiranobetonske plošče;mejna nosilnost;metoda končnih elementov;
Račun mejne nosilnosti armiranobetonskih plošč
Leto: 2006 Vir: Fakulteta za gradbeništvo in geodezijo (UL FGG)
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Oznake: jeklene plošče;mejna nosilnost;metoda končnih elementov;materialna nelinearnost;
Račun mejne nosilnosti jeklenih plošč
Leto: 2006 Vir: Fakulteta za gradbeništvo in geodezijo (UL FGG)
Izvirni znanstveni članek
Oznake: gradbeništvo;konstrukcije;plastičnost;Hellinger-Reissner;modeliranje odpovedi materiala;vgrajena neveznost;civil engineering;structures;2D solid;elasto-plasticity;embedded-discontinuity;fracture modelling;softening-plasticity;stress-hybrid quadrilateral;plasticity;
The Hellinger-Reissner principle is applied to derive a hybrid-mixed quadrilateral finite element with embedded-discontinuity in displacements, which can model a discrete crack (interface) within the element, and its sliding (and opening). The chosen material models are elasto-plasticity with harden ...
Leto: 2020 Vir: Fakulteta za gradbeništvo in geodezijo (UL FGG)
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Oznake: gradbeništvo;konstrukcije;modeliranje loma;fazno polje;računske sheme;vgrajena neveznost;civil engineering;structures;fracture modeling;phase-field;monolithic;coupled;staggered;uncoupled;
A unified framework for an impromptu switching between the coupled (i.e., the monolithic), the staggered, and the uncoupled solution strategies for the phase-field based computations of material fracture is presented. As a model problem, a 2d quasi-brittle solid phase-field formulation, which is bas ...
Leto: 2021 Vir: Fakulteta za gradbeništvo in geodezijo (UL FGG)
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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)
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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)
Samostojni znanstveni sestavek ali poglavje v monografski publikaciji
Oznake: shape memory alloys;superelasticity;3D-shell model;finite elements;
A finite element formulation for the analysis of large strains of thin-walled shape memory alloys is briefly presented. For the shell model we use a seven-kinematic-parameter model for large deformations and rotations, which takes into account the through-the-thickness stretch and can directly incor ...
Leto: 2020 Vir: Fakulteta za strojništvo (UL FS)
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Oznake: embedded crack;plain concrete;finite elements;dicontinuities;
We present a quadrilateral finite element with an embedded crack that can be used to model tensile fracture in two-dimensional concrete solids and the crack growth. The element has kinematics that can represent linear jumps in both normal and tangential displacements along the crack line. The cohesi ...
Leto: 2010 Vir: Fakulteta za gradbeništvo in geodezijo (UL FGG)
Izvirni znanstveni članek
Oznake: zlitine z oblikovnim spominom;superelastičnost;velike specifične deformacije;smart memory alloys;superlasticity;large strains;thin-walled structures;finite strains;seven-parameter shell model;
Many shape memory alloy (SMA) applications, such as biomedical devices, electromechanical actuators, and elastocaloric cooling devices, are based on thin-walled flat or shell-like structures. An advanced design of such structures requires the development of an efficient and accurate numerical tool f ...
Leto: 2021 Vir: Fakulteta za strojništvo (UL FS)
Št. zadetkov: 13
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