MOAA and topology judgment for mesh construction

Date

2004-11-17

Author

Cheng, Wen-Jie
Sorguç, Arzu
Shinoda, Junichi
Hagiwara, Ichiro

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

70
views

0
downloads

In this paper, the Maximum Opposite Angulation Approach (MOAA) for 3-D including the topology optimization is discussed. The MOAA algorithm is developed to generate meshes in 2-D and 3-D. The basic principles of the algorithm both in 2-D applications and in 3-D applications, is to pre-set uniformity to the initial data set to form point pairs yielding possible shortest line segments. These line segments are connected with the points providing the maximum angle for the vertex of the triangular mesh to be constructed. Thus, the algorithm provides triangular meshes having well balanced interior angles and good aspect ratios. The MOAA algorithm can be proved similar to the Delaunay’s approach in 2-D from the principle and with the quickest speed. In 3-D, it was also shown that it is much more efficient than many Delaunay class algorithms with mesh architectures preserving the topology, for uniformly organized data points. In this study, the topology optimization together with the MOAA algorithm is presented to improve the precision of reconstruction of the original surface. In this context, topology judgment for intersection problem in 3-D, distortion phenomenon, the possibility of loosing some characteristics of the original surface is thoroughly investigated.

Subject Keywords

The MOAA approach, Triangular mesh, Topology judgment

URI

https://hdl.handle.net/11511/35316

DOI

https://doi.org/10.1115/pvp2004-2768

Collections

Department of Architecture, Conference / Seminar

Suggestions

OpenMETU
Core

Least-squares finite element solution of Euler equations with H-type mesh refinement and coarsening on triangular elements AKARGUN, Hayri Yigit; Sert, Cüneyt (2014-01-01) Purpose - The purpose of this paper is to demonstrate successful use of least-squares finite element method (LSFEM) with h-type mesh refinement and coarsening for the solution of two-dimensional, inviscid, compressible flows.
Moving mesh discontinuous Galerkin methods for PDEs with traveling waves UZUNCA, MURAT; Karasözen, Bülent; Kucukseyhan, T. (2017-01-01) In this paper, a moving mesh discontinuous Galerkin (dG) method is developed for nonlinear partial differential equations (PDEs) with traveling wave solutions. The moving mesh strategy for one dimensional PDEs is based on the rezoning approach which decouples the solution of the PDE from the moving mesh equation. We show that the dG moving mesh method is able to resolve sharp wave fronts and wave speeds accurately for the optimal, arc-length and curvature monitor functions. Numerical results reveal the effi...
FORCED HARMONIC RESPONSE ANALYSIS OF NONLINEAR STRUCTURES USING DESCRIBING FUNCTIONS TANRIKULU, O; KURAN, B; Özgüven, Hasan Nevzat; IMREGUN, M (1993-07-01) The dynamic response of multiple-degree-of-freedom nonlinear structures is usually determined by numerical integration of the equations of motion, an approach which is computationally very expensive for steady-state response analysis of large structures. In this paper, an alternative semianalytical quasilinear method based on the describing function formulation is proposed for the harmonic response analysis of structures with symmetrical nonlinearities. The equations of motion are converted to a set of nonl...
Optimization of Power Conversion Efficiency in Threshold Self-Compensated UHF Rectifiers With Charge Conservation Principle Gharehbaghi, Kaveh; KOÇER, FATİH; Külah, Haluk (2017-09-01) This paper presents a compact model for threshold self-compensated rectifiers that can be used to optimize circuit parameters early in the design phase instead of time-consuming transient simulations. A design procedure is presented for finding the optimum aspect ratio of transistors used in the converter and number of rectifying stages to achieve the maximum power conversion efficiency. In the presented analysis, the relation between the power conversion efficiency and the load current over the variation o...
ADM formulation of generic massless spin-2 gravity Doğru, Müslüm; Tekin, Bayram; Department of Physics (2018) We give a review of the article [1], which uses the Dirac constraint analysis and 3 + 1 split of geometrodynamics[2] to create the Hamiltonian formulation of some gravitational actions. We apply the suggested methods to, Born-Infeld extension of New Massive Gravity, (BINMG) theory and find out the constraints and their classifications except for two constraints. The number of degrees of freedom in BINMG depends on the classification of these two constraints. We could not determine the classes of these two c...

Citation Formats

W.-J. Cheng, A. Sorguç, J. Shinoda, and I. Hagiwara, “MOAA and topology judgment for mesh construction,” 2004, vol. 482, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/35316.