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A model of information processing and interactions in teams developing technical systems
A model of information processing and interactions in teams developing technical systems
Tomislav Martinec
Teamwork is often regarded as a critical operation element of product development organisations, whereas an efficient team-based approach to engineering design activities is a prerequisite for the success of technical systems development projects. Design team members thus need assistance in the form of methods and tools that will facilitate collaboration during team design activities, inasmuch as researchers and project managers require support in developing and prescribing the most...
Aerodynamic and aeroelastic characteristics of cablesupported bridges with roadway
 wind barriers
Aerodynamic and aeroelastic characteristics of cablesupported bridges with roadway wind barriers
Andrija Buljac
Strong cross-winds on bridges and viaducts may cause dynamic instabilities for passing vehicles. To protect vehicles from those adverse cross-wind effects, wind barriers are commonly placed on bridges. While these barriers proved to be successful in sheltering vehicles from cross-winds, their influence on bridge aerodynamic and aeroelastic characteristics is still fairly unknown. This is particularly important for long-span cablesupported bridges that are susceptible to dynamic...
Algoritam za tehnološku klasifikaciju na temelju CAD 3D modela izratka
Algoritam za tehnološku klasifikaciju na temelju CAD 3D modela izratka
Dražen Antolić
Rad se bavi istraživanjem mogućnosti automatizirane tehnološke klasifikacije na temelju CAD 3D modela izratka, što je nužan uvjet za automatizirano projektiranje osnovnih tehnoloških procesa, odnosno procjenu troškova izrade. Postavljena je hipoteza istraživanja: „Moguća je automatizirana tehnološka klasifikacija izradaka na temelju CAD 3D modela“. Pretpostavljeno je da u digitalnom zapisu CAD 3D modela postoje tehnološke značajke izratka koje je moguće izdvojiti u posebnu...
Analiza pouzdanosti u konceptualnom projektiranju konstrukcije broda
Analiza pouzdanosti u konceptualnom projektiranju konstrukcije broda
Karlo Pirić
Teorija pouzdanosti konstrukcija racionalno razmatra neizvjesnosti koje se javljaju prilikom strukturne analize i projektiranja konstrukcija, za razliku od tradicionalnih metoda koje pretpostavljaju da su svi parametri koji utječu na čvrstoću i opterećenje konstrukcije determinističke veličine. Određivanje vjerojatnosti oštećenja jedno je od ključnih područja interesa teorije pouzdanosti. U uvodnim razmatranjima ovog rada, dan je pregled dosadašnjih istraživanja i kratak opis...
Analiza uzdužne granične nosivosti u konceptualnoj sintezi tankostjenih konstrukcija
Analiza uzdužne granične nosivosti u konceptualnoj sintezi tankostjenih konstrukcija
Stanislav Kitarović
Ekonomski i ekološki aspekti gradnje i uporabe složenih tankostjenih konstrukcija (zrakoplov, brod, itd.) u današnje vrijeme uvjetuju sve izraženije zahtjeve za što većim smanjenjem pri tome utrošenog materijala i energije, tj. za iznalaženjem što racionalnijih i ekonomičnijih projektnih varijanti, koje stoga neminovno karakteriziraju i sve manje rezerve sigurnosti. U konceptualnoj sintezi nosivih konstrukcija razmatranje graničnih stanja omogućava neposredno razmatranje...
Atomistic-to-continuum modelling in solid mechanics
Atomistic-to-continuum modelling in solid mechanics
Eduard Marenić
We focus primarily on the conceptually new class of materials that are only one atom thick, called by common name “graphene”. The experimental measurement of the mechanical properties of graphene is still considered a difficult task, thus quantifying the mechanical properties by the numerical simulations is of great importance.rnWe use molecular mechanics and assume that atoms are the smallest unit needed to be modelled. Due to the lack of computational power, performing a fully...
Bezmrežna numerička metoda za analizu ploča
Bezmrežna numerička metoda za analizu ploča
Josip Hoster
U radu su predložene nove bezmrežne numeričke metode za analizu deformiranja ploča koje se temelje na metodi lokalnog težinskog ostatka (reziduala), odnosno lokalnoj Petrov-Galerkinovoj (MLPG) metodi. Pritom se provodi integracija slabog oblika uvjeta ravnoteže po lokalnom području integracije. Izbor težinske funkcije u težinskom ostatku je proizvoljan. Ploče su promatrane kao trodimenzijska tijela što omogućuje primjenu trodimenzijskih materijalnih modela. Diskretizacija je...
Development of numerical model for green water loading by coupling the mesh based flow models with the meshless models
Development of numerical model for green water loading by coupling the mesh based flow models with the meshless models
Josip Bašić
The interaction between a moving vessel and incident waves leads to large relative motions and strong nonlinearities. This can result in violent water dynamics so that water flows onto the deck of the vessel, known as green water, and reaches crucial equipment and other deck structures. Green water events are considered as serious threat to the stability and operability of vessels, which should be reliably predicted and properly assessed in the design stage. Due to complexity of the...
Development of numerical models within the liquid film and Lagrangian spray framework
Development of numerical models within the liquid film and Lagrangian spray framework
Jakov Baleta
Liquid film flow sheared by an external air flow field is a physical phenomenon encountered in many engineering applications such as: burners, rain on vehicle windows and aircraft wings, rocket nozzles, mist eliminators, heat exchangers, steam turbine blades and especially internal combustion (IC) engines. Specifically, liquid wall films affect chemical composition of the gas phase and wall thermal behaviour of these systems. The goal of this research is additional improvement of the...

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