Application of the Three-Dimensional Local Hybrid Method to the Structure with a Surface Crack Subjected to Bending Load

Abstract:

We developed the 3-D local hybrid method to evaluate the 3-D stress field inside the specimen from displacement data on the free surface obtained from the 2-D intelligent hybrid method. When a uniform load was applied to the structure with a surface crack, high accuracy was already acquired in stress analyses. The 3-D local hybrid method was anew applied to a structure with a surface crack which is subjected to bending load. It is expected that the accuracy depends on local model size. In this study, the width, the thickness and the height of the local model were changed widely, and analyses were carried out. Then the size of the local model necessary for the analyses was examined. Assessment of analyses was performed by comparing J integral value of a whole model and a local model.

• Periodical: Key Engineering Materials (Volumes 345-346)
• Pages: 469-472
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.345-346.469
• Online since: August 2007
• Authors: Kenji Machida, Takanori Ueno
• Keywords: 2-D Intelligent Hybrid Method, 3D Local Hybrid Method, Ĵ-Integral, Surface Crack

References

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[7] K. Machida. and G. Mizukami: Trans. JSEM, Vol. 5-2 (2005), p.54. Table 1 Analysis result when b and t are twice the crack length Table 2 Analysis result when b and t are 3 times the crack length.