Design optimisation of linear structures subjected to dynamic random loads with respect to fatigue life
Source abstract
Abstract
Abstract This work concerns the optimisation of linear two-dimensional planar metallic structures subjected to stationary Gaussian random loads. A strategy intended to improve the design of this category of structures is proposed according to the multiaxial high-cycle fatigue, by varying the thicknesses of the zones where the structure is assumed to be divided. To achieve this goal, a computationally efficient framework for the determination of the fatigue life is firstly proposed. It is based on a frequency formulation of the Sines’ fatigue criterion, adapted according to Pitoiset and Preumont works [1] . Two examples are presented to demonstrate the ability of the methodology to provide better structural topologies.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Probabilistic and Robust Engineering Design · Fatigue and fracture mechanics · Structural Load-Bearing Analysis
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References (23)
Show source-provided references
1. Spectral methods for multiaxial random fatigue analysis of metallic structures10.1016/S0142-1123(00)00038-4 ↗
2. Numerical implementation of multiaxial high-cycle fatigue criterion to structural optimization
3. Weber B, Labesse-Jied F, Robert JL. Comparison of multiaxial high cycle fatigue criteria and their application to fatigue design of structures. In: Carpinteri A, Freitas de M, Spagnoli A, editors. Sixth international conference on biaxial/multiaxial fatigue and fracture, vol. 31. Lisbon: Elsevier; 2001. p. 195–202.
4. Improvements of multiaxial fatigue criteria computation for a strong reduction of calculation duration10.1016/S0927-0256(98)00129-3 ↗
5. A comparative study of multiaxial high-cycle fatigue criteria for metals10.1016/S0142-1123(96)00064-3 ↗
6. Fatigue life calculation by means of the cycle counting and spectral methods under multiaxial random loading10.1111/j.1460-2695.2005.00877.x ↗
7. A stress invariant based spectral method to estimate fatigue life under multiaxial random loading10.1016/j.ijfatigue.2011.01.013 ↗
8. Expected principal stress directions under multiaxial random loading. Part I & II10.1016/S0142-1123(98)00046-2 ↗
9. Spectral methods to estimate local multiaxial fatigue failure for structures undergoing random vibrations10.1046/j.1460-2695.2001.00394.x ↗
10. A probabilistic model for the fatigue reliability of structures under random loadings with phase shift effects10.1016/j.ijfatigue.2009.09.007 ↗
11. Bendsøe · 2003
12. Duysinx P. Layout optimization: a mathematical programming approach. LTAS-Report OA-41. Belgium: University of Liege; 1996.
13. Huang · 2010
14. Meirovitch · 1975
15. Stephens · 2000
16. Wu B, Ferraton L, Robin C, Mesmacque G, Zakrzewski D. Application de critères de fatigue multiaxiale aux structures en alliage d’aluminium. Conf G2RT, TILT; December 2003 [in French].
17. Von Mises stresses in random vibration of linear structures10.1016/j.compstruc.2009.06.008 ↗
18. Probability distribution of extremes of Von Mises stress in randomly vibrating structures10.1115/1.2110865 ↗
19. On the peak factor of stationary Gaussian processes10.1016/0022-460X(85)90339-6 ↗
20. Pagnacco E, Zidani H, Sampaio R, Ellaia R, Souza de Cursi E. Multi-objective optimization of the dynamic of a bridge pillar and a truss structure subjected to random load by a new hybridized method. Mecánica Computacional, vol. XXX. p. 3339–55.
21. Haftka · 1992
22. Statics and inverse dynamics solvers based on strain-mode disassembly
23. Géradin · 1998