Zobrazeno 1 - 10
of 13
pro vyhledávání: '"Chau H. Le"'
Publikováno v:
Computer Methods in Applied Mechanics and Engineering. 345:805-825
Fatigue resistance is an important structural design criterion. In this work, we present a method for the topology optimization of structures subject to non-proportional cyclic loading with regard to fatigue criteria. The non-proportionality of the l
Publikováno v:
Structural and Multidisciplinary Optimization. 56:571-586
A multiresolution topology optimization approach is proposed using the p-version finite element method (p-version FEM). Traditional topology optimization, where a density design variable is assigned to each element, is suitable for low-order h-versio
Autor:
Chau H. Le, Ashley E. Sproles, Stephen P. Mayfield, Francis J. Fields, Tressa N Smalley, Amr Badary
Publikováno v:
Algal Research. 53:102158
The development of more sustainable food, feed, and bio-products is critical to mitigating the environmental stresses facing our world today. Algae, which includes seaweeds, eukaryotic microalgae, and cyanobacteria, are a promising platform to achiev
Publikováno v:
Acta Mechanica. 227:2881-2897
Minimum energy principles and generalized polarization trial fields are used to derive bounds on the effective elastic moduli of d-dimensional random cell polycrystals, which are extensions of our earlier 3D (3-dimensional) results. The bounds are sp
Publikováno v:
International Journal for Numerical Methods in Engineering. 92:507-530
SUMMARY Unlike the traditional topology optimization approach that uses the same discretization for finite element analysis and design optimization, this paper proposes a framework for improving multiresolution topology optimization (iMTOP) via multi
Publikováno v:
Journal of the Mechanics and Physics of Solids. 60:351-378
We describe a systematic approach to design material microstructures to achieve desired energy propagation in a two-phase composite plate. To generate a well-posed topology optimization problem we use the relaxation approach which requires homogeniza
Publikováno v:
Computer Methods in Applied Mechanics and Engineering. 200:985-996
In shape optimization, the independent node movement approach, wherein finite element node coordinates are used directly as design variables, allows the most freedom for shape change and avoids the time-consuming parameterization preprocess. However,
Publikováno v:
Structural and Multidisciplinary Optimization. 41:525-539
This paper presents a multiresolution topology optimization (MTOP) scheme to obtain high resolution designs with relatively low computational cost. We employ three distinct discretization levels for the topology optimization procedure: the displaceme
Publikováno v:
Structural and Multidisciplinary Optimization. 41:605-620
We propose an effective algorithm to resolve the stress-constrained topology optimization problem. Our procedure combines a density filter for length scale control, the solid isotropic material with penalization (SIMP) to generate black-and-white des
Autor:
Glaucio H. Paulino, Chau H. Le
Publikováno v:
Structural and Multidisciplinary Optimization. 37:255-264
Design variable and displacement fields are distinct. Thus, their respective material and finite element meshes may also be distinct, as well as their actual location of nodes for the two fields. The proposed Q4/Q4M element possesses design variable