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Structural optimization using global stress-deviation objective function via the level-set methodPolajnar, Miha ; Kosel, Franc ; Dražumerič, RadovanThe paper deals with minimum stress design using a novel stress-related objective function based on the global stress-deviation measure. The shape derivative, representing the shape sensitivity ... analysis of the structure domain, is determined for the generalized form of the global stress-related objective function. The optimization procedure is based on the domain boundary evolution via the level-set method. The elasticity equations are, instead of using the usual ersatz material approach, solved by the extended finite element method. The Hamilton-Jacobi equation is solved using the streamline diffusion finite element method. The use of finite element based methods allows a unified numerical approach with only one numerical framework for the mechanical problem as also for the boundary evolution stage. The numerical examples for the L-beam benchmark and the notched beam are given. The results of the structural optimization problem, in terms of maximum von Mises stress corresponding to the obtained optimal shapes, are compared for the commonly used global stress measure and the novel global stress-deviation measure, used as the stress-related objective functions.Vir: Structural and multidisciplinary optimization. - ISSN 1615-147X (Vol. 55, iss. 1, Jan. 2017, str. 91-104)Vrsta gradiva - članek, sestavni delLeto - 2017Jezik - angleškiCOBISS.SI-ID - 15189787
Avtor
Polajnar, Miha |
Kosel, Franc |
Dražumerič, Radovan
Teme
structural optimization |
global stress-related objective function |
global stress-deviation measure |
level-set method |
extended finite element method |
streamline diffusion finite element method |
strukturna optimizacija |
metoda nivojske postavitve |
razširjena metoda končnih elementov |
metoda končnih elementov |
globalna cenilna funkcija |
globalni kriterij |
napetost
Vnos na polico
Trajna povezava
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
Baze podatkov, v katerih je revija indeksirana
Ime baze podatkov | Področje | Leto |
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Povezave do osebnih bibliografij avtorjev | Povezave do podatkov o raziskovalcih v sistemu SICRIS |
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Polajnar, Miha | 36507 |
Kosel, Franc | 01698 |
Dražumerič, Radovan | 22240 |
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