Št. zadetkov: 13
Pregledni znanstveni članek
Oznake:
utrujanje;rast razpoke;razširjena metoda končnih elementov;zvarni spoji;življenjska doba zvarnega spoja;udarna žilavost;trdnost spojev;fatigue crack growth;extended finite element method;welded joints;fatigue life;highstrength low-alloyed steel;
Numerical simulation of fatigue crack growth in welded joints is not well represented in the literature, especially from the point of view of material heterogeneity in a welded joint. Thus, several case studies are presented here, including some focusing on fracture, presented by two case studies of ...
Leto:
2024
Vir:
Fakulteta za strojništvo (UM FS)
Izvirni znanstveni članek
Oznake:
varjenje površine;vmesna plast;zvar;žilavost;parametri rasti razpoke;
Leto:
2011
Vir:
dLib.si Digitalna knjižnica Slovenije
Izvirni znanstveni članek
Oznake:
shipping container;structural steel;zinc hot-dip galvanizing;transient heat transfer;distortion;
Glavni namen te študije je bila izdelava modela za numerično simulacijo vročega potopnega cinkanja 20 ft ISO transportnega kontejnerja. Zato smo analizirali osnovni termomehanski problem jeklene konstrukcije zaradi vpliva toplote med vročim potopnim cinkanjem. Numerični izračuni so bili izvršeni za ...
Leto:
2013
Vir:
Fakulteta za strojništvo (UM FS)
Izvirni znanstveni članek
Oznake:
obočno varjene cevi;lokalno upogibanje;kritična tlačna deformacija;neenakomerna debelina;kombinirane obremenitve;girth-welded pipes;local buckling;critical compressive strain;unequal thickness misalignment;combined loads;
This study investigates the bending capacity of large diameter girth-welded pipes. A nonlinear buckling analysis model subjected to combined internal pressure and bending loads is established. The effects of misalignment types, amplitudes, angles and mixed misalignments on the buckling behavior are ...
Leto:
2026
Vir:
Fakulteta za strojništvo (UM FS)
Izvirni znanstveni članek
Oznake:
obočno varjene cevi;lokalno upogibanje;kritična tlačna deformacija;neusklajenost;kombinirane obremenitve;girth-welded pipes;local buckling;critical compressive strain;misalignment;combined loads;
The compressive strain capacity of large diameter girth-welded pipelines is a primary concern in strain-based design, especially under severe geohazard loading. To accurately evaluate this capacity, a nonlinear buckling analysis model subjected to combined internal pressure and bending loads is esta ...
Leto:
2026
Vir:
Fakulteta za strojništvo (UM FS)
Izvirni znanstveni članek
Oznake:
constraint effect;ductile fracture;finite element analysis;material mismatching;stress triaxiality;transferability;
In this paper, constraint effect on ductile fracture initiation and propagation has been studied. Three-dimensional finite element analyses of mismatched welded joints made of high strength steel, have been performed for centre-cracked tensile (CCT) specimens. Different weld widths and material mism ...
Leto:
2011
Vir:
Fakulteta za strojništvo (UM FS)
Izvirni znanstveni članek
Oznake:
lomna mehanika;duktilni lom;visokotrdnostna nizko legirana jekla;razpoke;nekovinski vključki;rast praznin;mikromehanski model;trdnostno neenaki zvarni spoji;fracture mechanics;ductile fracture;high strength low alloyed steel;cracks;micromechanical model;mismatched welded joints;constraint effect;void growth;
In this paper the micromechanical approach to ductile fracture was applied in a study of constraint effect crack growth initiation in mismatched welded joints. The single edged- notched bend specimens (precrack length ▫$a_o/W=0.32$▫) were experimentally and numerically analysed. The coupled micromec ...
Leto:
2007
Vir:
Fakulteta za strojništvo (UM FS)
Izvirni znanstveni članek
Oznake:
superplasticity;Al alloys;deformation mechanisms;
We have investigated the superplastic deformation mechanism of a powder-metallurgy, high-zinc X7093 Al alloy. The objective was to examine the rate-controlling mechanisms that govern its superplastic deformation. The investigations were carried out in the temperature range 490–524 °C and strain rate ...
Leto:
2014
Vir:
Fakulteta za strojništvo (UM FS)
Izvirni znanstveni članek
Oznake:
varjenje;simulacije;numerična analiza;termična analiza;toplotna prevodnost;welding simulations;numerical analysis;thermal analysis;simulations;transient heat conduction;moving heat source;
The three-dimensional transient nonlinear thermal analysis of the hard facing process is performed by using the finite element method. The simulations were executed on the open source Salome platform using the open source finite element solver Code Aster. The Gaussian double ellipsoid was selected i ...
Leto:
2013
Vir:
Fakulteta za strojništvo (UM FS)
Izvirni znanstveni članek
Oznake:
friction-stir welding;welding parameters;metallography;mechanical test;numerical simulation;plinge stage;temperature;force;
This paper defines a set of welding parameters for the Friction-Stir Welding (FSW) of two forged panels of the alloy EN AW 7049A in a T652 temper and discusses the plunge stage of FSW using numerical modeling. This multi-component aluminum alloy is characterized by high strength, reduced plasticity ...
Leto:
2012
Vir:
dLib.si Digitalna knjižnica Slovenije