Št. zadetkov: 14
Magistrsko delo
Oznake:
inverzna identifikacija;pogojenost eksperimenta;snovni parametri;konstitutivni model;digitalna korelacija slik;metoda končnih elementov;optimizacija;
Razvoj in testiranje izdelkov potekata vedno pogosteje v virtualnem okolju, kjer simulacije potekajo na podlagi matematično-fizikalnih modelov in lastnosti izdelkov, med katere spadajo tudi elasto-plastične lastnosti materiala. Cilj naloge je preveriti izvedljivost identifikacije le-teh z uporabo di ...
Leto:
2017
Vir:
Fakulteta za strojništvo (UL FS)
Doktorska disertacija
Oznake:
disertacije;inverzna identifikacija;konstitutivni modeli;snovni parametri;korelacija digitalnih slik;polja deformacij;metoda končnih elementov;optimizacija;
Za zagotovitev točnega izračuna mehanskega odziva izdelka je treba v izračunu upoštevati čim bolj realen odziv materiala, ki ga popišemo s konstitutivnim modelom. Za določitev parametrov modela se v zadnjem času uporablja metode inverzne identifikacije na podlagi nehomogenih polj deformacij. V delu ...
Leto:
2021
Vir:
Fakulteta za strojništvo (UL FS)
Izvirni znanstveni članek
Oznake:
full-field measurements;digital image correlation;specimen shape recognition;surface registration;iterative closest point;
In the paper, an alignment methodology of finite element and full-field measurement data of planar specimens is presented. The alignment procedure represents an essential part of modern material response characterisation using heterogeneous strain-field specimens. The methodology addresses both the ...
Leto:
2021
Vir:
Fakulteta za strojništvo (UL FS)
Izvirni znanstveni članek
Oznake:
3D tiskanje;FFF;PLA;tlačni preizkus;ciklično obremenjevanje;3D printing;compression test;cyclic loading;
In designing high-performance, lightweight components, cellular structures are one of the approaches to be considered. The present study aimed to analyze the effect of the infill line distance of 3D printed circular samples on their compressive elastic behavior. Lightweight cellular poly-lactic acid ...
Leto:
2020
Vir:
Fakulteta za strojništvo (UL FS)
Objavljeni znanstveni prispevek na konferenci
Oznake:
heterogeneous test;digital image correlation;full-field measurements;confidence intervals;mechanical testing;
This paper aims to compare different heterogeneous test designs from the perspective of the confidence interval quantification of inversely identified parameters, where the influence of a DIC optical system systematic and random error are taken into account. Because the errors in optical measurement ...
Leto:
2021
Vir:
Fakulteta za strojništvo (UL FS)
Izvirni znanstveni članek
Oznake:
plasticity;biaxial testing;numerical simulation;identification;full-field measurement;YLD2000-2d;
Conventionally, plastic anisotropy is calibrated by using standard uniaxial tensile and biaxial test results. Alternatively, heterogeneous strain field specimens in combination with full-field measurements can be used for this purpose. As reported by the literature, such an approach reduces the numb ...
Leto:
2020
Vir:
Fakulteta za strojništvo (UL FS)
Izvirni znanstveni članek
Oznake:
fixed joints;cold-formed joints;DIC measurements;extruded brass;crimping;
Conventional crimp joints show high sensitivity to process conditions which makes it difficult to ensure joint quality. Low sensitivity of a joint to process conditions increases the structural integrity and performance of the product, yielding a more reliable structure. In this work, we address thi ...
Leto:
2021
Vir:
Fakulteta za strojništvo (UL FS)
Izvirni znanstveni članek
Oznake:
kolokacijske metode;numerična integracija;navadne diferencialne enačbe;trdi sistemi;collocation methods;numerical integration;ordinary differential equations;stiff systems;
In this work, a novel class of collocation methods for numerical integration of ODEs is presented. Methods are derived from the weighted integral form of ODEs by assuming that a polynomial function at individual time increment approximates the solution of the ODE. A distinct feature of the approach, ...
Leto:
2021
Vir:
Fakulteta za strojništvo (UL FS)
Izvirni znanstveni članek
Oznake:
confidence intervals;nncertainty;full-field measurements;digital image correlation;mechanical testing;heterogeneous test;
Digital image correlation (DIC) is a powerful tool for characterising materials and determining material model parameters. To assess the reliability of the full-field measurement-based inverse identification procedures, it is crucial to investigate the impact of the measurement errors on the identif ...
Leto:
2024
Vir:
Fakulteta za strojništvo (UL FS)
Izvirni znanstveni članek
Oznake:
Arcan fixture;basalt fibre composites;digital image correlation;finite element analysis;
A cross-ply basalt V-notched butterfly specimens were subjected to pure tension, combined tension-shear, and shear stress-strain state using a modified Arcan test fixture with loading angles from 0° to 90° with 15° increment. Multiaxial stress and strain states were studied using the principal stres ...
Leto:
2024
Vir:
Fakulteta za strojništvo (UL FS)