Sökning: onr:"swepub:oai:DiVA.org:liu-164857" >
Topology optimizati...
-
Suresh, ShyamLinköpings universitet,Mekanik och hållfasthetslära,Tekniska fakulteten
(författare)
Topology optimization using a continuous-time high-cycle fatigue model
- Artikel/kapitelEngelska2020
Förlag, utgivningsår, omfång ...
-
2019-11-26
-
SPRINGER,2020
-
electronicrdacarrier
Nummerbeteckningar
-
LIBRIS-ID:oai:DiVA.org:liu-164857
-
https://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-164857URI
-
https://doi.org/10.1007/s00158-019-02400-wDOI
-
https://urn.kb.se/resolve?urn=urn:nbn:se:miun:diva-48640URI
Kompletterande språkuppgifter
-
Språk:engelska
-
Sammanfattning på:engelska
Ingår i deldatabas
Klassifikation
-
Ämneskategori:ref swepub-contenttype
-
Ämneskategori:art swepub-publicationtype
Anmärkningar
-
We propose a topology optimization method that includes high-cycle fatigue as a constraint. The fatigue model is based on a continuous-time approach where the evolution of damage in each point of the design domain is governed by a system of ordinary differential equations, which employs the concept of a moving endurance surface being a function of the stress and back stress. Development of fatigue damage only occurs when the stress state lies outside the endurance surface. The fatigue damage is integrated for a general loading history that may include non-proportional loading. Thus, the model avoids the use of a cycle-counting algorithm. For the global high-cycle fatigue constraint, an aggregation function is implemented, which approximates the maximum damage. We employ gradient-based optimization, and the fatigue sensitivities are determined using adjoint sensitivity analysis. With the continuous-time fatigue model, the damage is load history dependent and thus the adjoint variables are obtained by solving a terminal value problem. The capabilities of the presented approach are tested on several numerical examples with both proportional and non-proportional loads. The optimization problems are to minimize mass subject to a high-cycle fatigue constraint and to maximize the structural stiffness subject to a high-cycle fatigue constraint and a limited mass.
Ämnesord och genrebeteckningar
Biuppslag (personer, institutioner, konferenser, titlar ...)
-
Lindström, StefanLinköpings universitet,Mekanik och hållfasthetslära,Tekniska fakulteten(Swepub:miun)stelin2200
(författare)
-
Thore, Carl-JohanLinköpings universitet,Mekanik och hållfasthetslära,Tekniska fakulteten(Swepub:liu)carth26
(författare)
-
Torstenfelt, BoLinköpings universitet,Mekanik och hållfasthetslära,Tekniska fakulteten(Swepub:liu)boto13
(författare)
-
Klarbring, AndersLinköpings universitet,Mekanik och hållfasthetslära,Tekniska fakulteten(Swepub:liu)andkl97
(författare)
-
Linköpings universitetMekanik och hållfasthetslära
(creator_code:org_t)
Sammanhörande titlar
-
Ingår i:Structural and multidisciplinary optimization (Print): SPRINGER61:3, s. 1011-10251615-147X1615-1488
Internetlänk
Hitta via bibliotek
Till lärosätets databas