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Multilevel Meshless Model for the Elasto-Plastic Torsion of Prismatic Bars


Kozulić, Vedrana; Gotovac, Blaž
Multilevel Meshless Model for the Elasto-Plastic Torsion of Prismatic Bars // ECCOMAS 2012 - European Congress on Computational Methods in Applied Sciences and Engineering, e-Book Full Papers
Vienna: Vienna University of Technology, 2012. str. 7591-7606 (predavanje, međunarodna recenzija, cjeloviti rad (in extenso), znanstveni)


Naslov
Multilevel Meshless Model for the Elasto-Plastic Torsion of Prismatic Bars

Autori
Kozulić, Vedrana ; Gotovac, Blaž

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
ECCOMAS 2012 - European Congress on Computational Methods in Applied Sciences and Engineering, e-Book Full Papers / - Vienna : Vienna University of Technology, 2012, 7591-7606

ISBN
978-3-9502481-9-7

Skup
ECCOMAS 2012 6th European Congress on Computational Methods in Applied Sciences and Engineering

Mjesto i datum
Beč, Austrija, 10-14.09.2012.

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Torsion problem of prismatic bars ; plastic failure ; atomic basis functions ; universality ; collocation method ; multilevel base

Sažetak
In the elasto-plastic analyses it is interesting to detect plasticized zones and monitor their propagation parallel with the increase of load. By numerical procedures based on the weak formulation, plastic failure always records before it really happens. More efficient solutions can be obtained by applying the procedure of the strong formulation with an arbitrary increase in the number of basis functions on the domain. Here, we implemented the Fup basis functions with compact support which belong to the class of atomic functions. Because of the property of universality, it is possible to hierarchically increase the number of basis functions during non-linear calculation (multilevel approach) in places where plastic yielding occurs. The numerical model is created by applying the collocation method (Fup Collocation Method - FCM) and incremental-iterative procedure for monitoring the propagation of plastic zones. The model is illustrated on examples of elasto-plastic behavior of a prismatic bar subjected to torsion. The results obtained by the FCM are compared with the existing exact solutions and numerical solutions obtained by the FEM. It is shown that the presented numerical model efficiently simulates the real non-linear behavior of the structure and provides excellent results for the elaborated problems.

Izvorni jezik
Engleski

Znanstvena područja
Građevinarstvo



POVEZANOST RADA


Projekt / tema
083-0831541-1534 - Adaptivno bezmrežno modeliranje u projektiranju građevinskih konstrukcija (Vedrana Kozulić, )

Ustanove
Fakultet građevinarstva, arhitekture i geodezije, Split

Časopis indeksira:


  • Scopus