Examination of the Optimal Local Model Size in the Three-Dimensional Local Hybrid Method

Kenji Machida; Takanori Ueno; Hirohisa Oyama

doi:10.4028/www.scientific.net/KEM.326-328.991

Paper Titles

Fatigue Fracture Behavior of Mg-Zn-Y Alloy
p.975

Fatigue Life Evaluation for Nuclear Power Plant Using Green’s Function and Real Operating Histories
p.979

A Study on the Lower Flanges Fracture of Endplate Bolted Connection
p.983

Random Fatigue Analysis of Automotive Bevel Gear
p.987

Examination of the Optimal Local Model Size in the Three-Dimensional Local Hybrid Method
p.991

A Comparative Study on the Fatigue Evaluation for Weldments under Out-of Plane Bending Load Using Structural Stress and Hot Spot Stress
p.995

Nondestructive Detection of Delamination of Thermally Sprayed Material Using ESPI
p.999

Dynamic Fracture of Mode I Crack in Orthotropic Composites Studied by Caustics Method
p.1003

Evaluation of Corrosion Fatigue Crack Initiation Life of 13Cr Steel
p.1007

HomeKey Engineering MaterialsKey Engineering Materials Vols. 326-328Examination of the Optimal Local Model Size in the...

Examination of the Optimal Local Model Size in the Three-Dimensional Local Hybrid Method

Abstract:

The interior stress field of the surface crack specimen subjected to a uniform tensile load has been successfully analyzed by the 3-D local hybrid method. In this study, it was examined whether the 3-D local hybrid method was applicable to the specimen subjected to the bending load. It has been understood that the decision of the optimal size of the local model is indispensable in the improvement of accuracy from the previous research. Then, the width and thickness of the local model were changed widely, and analyses were carried out to find the optimal hybrid local model size. Moreover, it was examined how to decide the optimal size of the hybrid local model with various crack length and aspect ratio of the specimen. The optimal size of the hybrid local model was examined from the comparison with the J integral of the whole model.

You might also be interested in these eBooks

Experimental Mechanics in Nano and Biotechnology

View Preview

Info:

Periodical:

Key Engineering Materials (Volumes 326-328)

Pages:

991-994

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.326-328.991

Citation:

Cite this paper

Online since:

December 2006

Authors:

Kenji Machida, Takanori Ueno, Hirohisa Oyama

Keywords:

2-D Intelligent Hybrid Method, 3D Local Hybrid Method, Ĵ-Integral, Surface Crack

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

Citation:

References

[1] K. Machida, M. Geni and H. Okmura: Eds. Geni, M. and Kikuchi, M., Key Engineering Materials, Vols. 243-244(2003), p.153.

Google Scholar

[2] K. Machida and K. Usui: Trans. JSME, Vol. 68-676A (2002), p.1794.

Google Scholar

[3] K. Machida: Adv. Comp. & Exp. Eng. & Sci., (2003), CD-ROM Ver.

Google Scholar

[4] K. Machida. and G. Mizukami: Proc. 2004 SEM X (2004), CD ROM Ver.

Google Scholar

[5] K. Machida: Adv. in Exp. Mech., Ed. Carmine Pappalettere, EURASEM (2004), CD ROM Ver.

Google Scholar

[6] K. Machida. and G. Mizukami: Trans. JSME, Vol. 71-709A (2005), p.1220.

Google Scholar

[7] K. Machida. and G. Mizukami: Trans. JSEM, Vol. 5-2 (2005), p.54.

Google Scholar

90. 3 0. 4 0. 5 Aspect ratio Thickness/b c=6mm c=7mm c=8mm Fig. 7 Relation between optimal thickness and aspect ratio Table 1 Analysis result by presumed optimal local models c a/c Relative error (%).

2 -0. 36 6mm.

6 -1. 43.

2 3. 50 7mm.

6 -0. 47.

2 1. 39 8mm.

6 0. 55 �.