Št. zadetkov: 10
Izvirni znanstveni članek
Oznake:
injection molding;numerical simulation;residual stresses;shrinkage;ejection;
Injection molded products, produced from semi-crystalline polymers may include undercut features which can introduce distortion to the shape of the product during ejection. A thermo-mechanical modeling approach for simulating these advanced ejection problems is developed. The approach is formed by c ...
Leto:
0
Vir:
Fakulteta za strojništvo (UL FS)
Doktorska disertacija
Oznake:
brizganje plastike;izmetavanje;zaostale napetosti;skrček;napoved oblike;numerično modeliranje;
Razvit je pristop numerične simulacije brizganja plastike, pri katerem je cilj napovedati končno obliko izdelka, ki je odvisna tudi od faze izmetavanja. Modeliranje faz zapolnjevanja, naknadnega tlaka in ohlajanja je izvedeno kot problem računalniške dinamike tekočin. Zaostale napetosti v izdelku so ...
Leto:
2019
Vir:
Fakulteta za strojništvo (UL FS)
Izvirni znanstveni članek
Oznake:
mechanical properties;modelling and process simulation;stress relieving;viscouselastic-
plastic constitutive model;stainless steel;
V delu je predstavljen pristop k numeričnim simulacijam žarjenja za odpravljanje zaostalih napetosti. Obravnavano je avstenitno nerjavno jeklo 316L (AISI) s popolnoma avstenitno strukturo v celotnem temperaturnem razponu od sobne temperature do temperature okolice. Jeklo, zaradi povišanih temperatur ...
Leto:
2009
Vir:
Fakulteta za strojništvo (UL FS)
Izvirni znanstveni članek
Oznake:
material properties;modelling simmulation;process simulations;residual stresses;
Mathematical modelling of thermo-mechanical processes, such as welding and heat
treatment processes, requires the choice of an appropriate material constitutive model on one
hand and the use of a consistent set of material parameters on the other. However, possible
untrustworthiness of the materi ...
Leto:
2011
Vir:
Fakulteta za strojništvo (UL FS)
Izvirni znanstveni članek
Oznake:
mikrostrukture;hitrost segrevanja;lasersko kaljenje;računalniške simulacije;prior microstructures;heating rate;laser hardening;computer simulations;
The response of the hypo-eutectoid steel to laser hardening, which is measured as the depth of the increased hardness, depends not only on the set of the process parameters but also on the prior microstructure of the workpiece. The multiple preliminary stages of the treatment of the workpiece in the ...
Leto:
2018
Vir:
Fakulteta za strojništvo (UL FS)
Izvirni znanstveni članek
Oznake:
common carotid artery;finite element method;residual stresses;thermomechanics;
This work deals with the prediction of the mechanical response of a section of a human common carotid artery (CCA). The arterial residual stress state is accounted for using the thermomechanical analogy (TMA) approach, which is applied in this work to model the mechanical response of a two-layered a ...
Leto:
2017
Vir:
Fakulteta za strojništvo (UL FS)
Izvirni znanstveni članek
Oznake:
residual stresses;zero-stress state of arteries;finite element method;thermomechanics;
The prediction of the arterial zero-stress state is as of yet an unresolved problem in the field of modelling the mechanical response of patientspecific arteries. This is because the configuration associated with arterial zero-stress state is impossible to obtain experimentally. However, the zero-st ...
Leto:
2015
Vir:
Fakulteta za strojništvo (UL FS)
Izvirni znanstveni članek
Oznake:
model viskoznosti krvi;tok krvi;ne-newtonovske tekočine;računalniška dinamika tekočin;mehanika tekočin;blood viscosity model;non-newtonian;blood flow;computational fluid dynamics;
The purpose of this work is to predict the effect of impaired red blood cells (RBCs) deformability on blood flow conditions in human carotid artery bifurcation. First, a blood viscosity model is developed that predicts the steady-state blood viscosity as a function of shear rate, plasma viscosity, a ...
Leto:
2016
Vir:
Fakulteta za strojništvo (UL FS)
Izvirni znanstveni članek
Oznake:
človeška arterija;skupna karotidna arterija;zaostale napetosti;breznapetostno stanje arterij;termomehanika;metoda končnih elementov;nega;bolniki;patient-specific artery;common carotid artery;residual stresses;arterial zero-stress state;thermomechanics;finite element method;
In this work, the residual stress state of a human common carotid artery is predicted using the so-called thermomecha- nical analogy approach. The purpose of the approach is to enable consistent mapping of residual stresses and the respec- tive configuration from a circular arterial segment to a pat ...
Leto:
2016
Vir:
Fakulteta za strojništvo (UL FS)
Doktorska disertacija
Oznake:
gradbeništvo;disertacije;metoda stohastičnih končnih elementov;stohastičo polje;Karhunen- Loèvova dekompozicija;stohastični končni elementi;avtomatsko odvajanje;perturbacijska metoda;
V disertaciji je razvit splošni simbolni pristop k avtomatizaciji metode stohastičnih končnih elementov v modeliranju konstrukcij. Uporabljen je hibridni simbolnonumerični pristop, v katerem so kombinirani: program za simbolno računanje Mathematica, avtomatski generator kode z vgrajeno tehniko avtom ...
Leto:
2014
Vir:
Fakulteta za gradbeništvo in geodezijo (UL FGG)