Multi-scale design of an architected composite structure with optimized graded properties

2020 ◽  
Vol 252 ◽  
pp. 112608 ◽  
Author(s):  
Arnaldo Casalotti ◽  
Francesco D’Annibale ◽  
Giuseppe Rosi
Keyword(s):  
Composite Structure ◽  
Multi Scale ◽  
Graded Properties ◽  
Scale Design

Multi-scale design optimization of modern offshore wind farms

2021 ◽  
Author(s):  
Davide Cazzaro ◽  
Alessio Trivella ◽  
Francesco Corman ◽  
David Pisinger
Keyword(s):  
Design Optimization ◽  
Wind Farms ◽  
Offshore Wind ◽  
Offshore Wind Farms ◽  
Multi Scale ◽  
Scale Design

Multi-scale design using a holonic approach

2013 ◽  
Author(s):  
H. Issa ◽  
M.Z. Tzen ◽  
M. Lenczner ◽  
R. Habib ◽  
E. Ostrosi ◽  
...  
Keyword(s):  
Multi Scale ◽  
Scale Design

Methodology for multi-scale design of isothermal laminar flow networks

2011 ◽  
Vol 173 (2) ◽  
pp. 541-551 ◽  
Author(s):  
J.-M. Commenge ◽  
M. Saber ◽  
L. Falk
Keyword(s):  
Laminar Flow ◽  
Flow Networks ◽  
Multi Scale ◽  
Scale Design

A New Sampling Approach for the Multi-Scale Design of Metallic Materials

2020 ◽  
Vol 142 (8) ◽  
Author(s):  
Pinar Acar
Keyword(s):  
Material Properties ◽  
Sampling Method ◽  
Solution Space ◽  
Computational Time ◽  
Polycrystalline Materials ◽  
Microstructure Design ◽  
Multi Scale ◽  
Generate Property ◽  
Scale Design ◽  
Sampling Approach

Abstract We present a new sampling method for the multi-scale design of polycrystalline materials, which improves the computational time efficiency compared to the existing computational approaches. The solution strategy aims to find microstructure designs that optimize component-scale mechanical properties. The microstructure is represented with a probabilistic texture descriptor that quantifies the volume fractions of different crystallographic orientations. However, the original microstructure design space is high-dimensional and thus optimization in this domain is not favorable. Instead, we generate property closures, which are the reduced spaces of volume-averaged material properties that are computed in terms of the microstructural texture descriptors. We observe that the traditional design approaches which are based on sampling in the original microstructure space and sampling on the property closure are inefficient as they lead to highly concentrated design samples in the solution space. Therefore, we introduce a new sampling method in the property closure, which creates simplexes using the triangulation of the property hull and then generating samples for each simplex. Example problems include the optimization of Galfenol and α-titanium microstructures to improve non-linear material properties. The new sampling approach is shown to obtain better solutions while decreasing the required computational time compared to the previous microstructure design methods.

scholarly journals A Multi-Scale Model of Soft Imperfect Interface with Nonlocal Damage

2019 ◽  
Vol 10 (01) ◽  
pp. 1841001
Author(s):  
Asghar Ali Maitlo ◽  
Frédéric Lebon ◽  
Caroline Bauzet
Keyword(s):  
Asymptotic Expansions ◽  
Composite Structure ◽  
Imperfect Interface ◽  
Unilateral Constraint ◽  
Microscopic Level ◽  
Scale Model ◽  
Nonlocal Damage ◽  
Multi Scale ◽  
Bonded Interface ◽  
Unilateral Conditions

The aim of this paper is to propose a model of bonded interface including nonlocal damage and unilateral conditions. The model is derived from the problem of a composite structure made by two adherents and a thin adhesive. The adhesive is damaged at microscopic level and is subjected to two regimes, one in traction and one in compression. The model of interface is derived by matched asymptotic expansions. In this paper, two cases corresponding to the two regimes are discussed. Moreover, this model can be considered as a model of contact with adhesion and unilateral constraint. At the end of the paper, a simple numerical example is presented to show the evolution of the model.

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