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Topology optimization of continuum structures subjected to uncertainties in material properties
Mechanical Engineering Department State, University of Santa Catarina, Joinville, Brazil.ORCID iD: 0000-0002-0684-9262
Mechanical Engineering Department State, University of Santa Catarina, Joinville, Brazil.
2016 (English)In: International Journal for Numerical Methods in Engineering, ISSN 0029-5981, E-ISSN 1097-0207, Vol. 106, no 3, p. 192-212Article in journal (Refereed) Published
Abstract [en]

This work addresses the use of the topology optimization approach to the design of robust continuum structures under the hypothesis of uncertainties with known second order statistics. To this end, the second-order perturbation approach is used to model the response of the structure and the midpoint discretization technique is used to discretize the random field. The objective function is a weighted sum of the expected compliance and its standard deviation. The optimization problem is solved using a traditional optimality criteria method. It is shown that the correlation length plays an important role in the obtained topology and statistical moments when only the minimization of the standard deviation is considered, resulting in more and thinner reinforcements as the correlation length decreases. It is also shown that the minimization of the expected value is close to the minimization of the deterministic compliance for small variations of Young's modulus.

Place, publisher, year, edition, pages
John Wiley & Sons, 2016. Vol. 106, no 3, p. 192-212
Keywords [en]
topology optimization, robust, random field, uncertainties
National Category
Engineering and Technology Mechanical Engineering Applied Mechanics
Identifiers
URN: urn:nbn:se:oru:diva-116015DOI: 10.1002/nme.5126ISI: 000372320900002Scopus ID: 2-s2.0-84954286465OAI: oai:DiVA.org:oru-116015DiVA, id: diva2:1897960
Available from: 2024-09-16 Created: 2024-09-16 Last updated: 2024-09-30Bibliographically approved

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Da Silva, Gustavo Assis

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