A multi-scale model is proposed in the present work based on the effort of reducing the stress concentrations in an infinite aluminum homogeneous plate with a hole that is subjected to several types of far-field loading conditions. A set of concentric composite layers reinforced using solid or hollow fibers are employed to replace the homogenous material in the vicinity around the hole. The homogenized moduli of each layer can be easily calculated from the proposed locally exact homogenization theory. The continuity equations and boundary conditions are applied to solve the boundary value problems at structural level using assumed displacement field in terms of complex potentials, then the stress distributions at the local microstructures are investigated. It is found that the hollow fibers are more efficient than solid ones in reducing the stress concentrations at both homogenized and microstructural levels. The particle swarm optimization technique is finally introduced to search for the optimal design parameters to reduce the stress concentrations. It can be concluded that the local stresses in the matrix phase of the innermost layer are still very large and prone to suffer cracks even if the homogenized stress concentration factors are significantly reduced.
Fusion Engineering and Design – Elsevier
Published: Oct 1, 2018
It’s your single place to instantly
discover and read the research
that matters to you.
Enjoy affordable access to
over 18 million articles from more than
15,000 peer-reviewed journals.
All for just $49/month
Query the DeepDyve database, plus search all of PubMed and Google Scholar seamlessly
Save any article or search result from DeepDyve, PubMed, and Google Scholar... all in one place.
Get unlimited, online access to over 18 million full-text articles from more than 15,000 scientific journals.
Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.
All the latest content is available, no embargo periods.
“Hi guys, I cannot tell you how much I love this resource. Incredible. I really believe you've hit the nail on the head with this site in regards to solving the research-purchase issue.”Daniel C.
“Whoa! It’s like Spotify but for academic articles.”@Phil_Robichaud
“I must say, @deepdyve is a fabulous solution to the independent researcher's problem of #access to #information.”@deepthiw
“My last article couldn't be possible without the platform @deepdyve that makes journal papers cheaper.”@JoseServera