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| Avtorstvo: |
Boštjan BRANK // 1.01 Izvirni znanstveni članek
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| Leto: |
2006 |
| Citat: |
KEGL, Marko, BRANK, Boštjan. Shape optimization of
truss-stiffened shell structures with variable thickness. Comput. methods
appl. mech. eng.. [Print ed.], 2006, vol. 195, iss. 19/22, str. 2611-2634.
http://dx.doi.org/10.1016/j.cma.2005.05.020.
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| Povzetek: |
This paper presents an effective approach to shape optimal design of
statically loaded elastic shell-like structures. The shape parametrization is
based on a design element technique. The chosen design element is a rational
Bézier body, enhanced with a smoothly varying scalar field. A body-like
designelement makes possible to unify the shape optimization of both pure shells
and truss-stiffened shell structures. The scalar field of the design element is
obtained by attaching to each control point a scalar quantity, which is an
add-on to the position and weight of the control point. This scalar field is
linked to the shell thickness distribution, which can be optimized
simultaneously with the shape of the shell. For linear and non-linear analysis
of shell structures, a reliable 4-node shell finite element formulation is
utilized. The presented optimization approach assumes the employment of a
gradient-based optimization algorithm and the use of the discrete method of
direct differentiation to perform the sensitivity analysis.Four numerical
examples of shell and truss-stiffened shell optimization are presented in detail
to illustrate the performance of the proposed approach. [COBISS.SI-ID 10296342]
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| Tipologija: |
1.01 Izvirni znanstveni članek |
| COBISS ID |
10296342 Polni zapis iz sistema COBISS |
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Vpisal 2009/06/10 11:56
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