A Method for Determining the Elastic-Plastic Response Ahead of a Notch Tip

C. H. Wang; W. Guo; L. R. F. Rose

doi:10.1115/1.2812380

Journal of Engineering Materials and Technology | Volume 121 | Issue 3 | TECHNICAL PAPERS

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A Method for Determining the Elastic-Plastic Response Ahead of a Notch Tip

C. H. Wang, W. Guo and L. R. F. Rose

[+] Author and Article Information

C. H. Wang

Aeronautical and Maritime Research Laboratory, Defence Science and Technology Organisation, Melbourne VIC 3001, Australia

W. Guo

Department of Engineering Mechanics, Xian Jiaotong University, People’s Republic of China

L. R. F. Rose

Aeronautical and Maritime Research Laboratory, Defence Science and Technology Organisation, Melbourne VIC, Australia

J. Eng. Mater. Technol 121(3), 313-320 (Jul 01, 1999) (8 pages) doi:10.1115/1.2812380 History: Received September 08, 1998; Revised November 17, 1998; Online November 27, 2007

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Abstract

The stress distribution ahead of a notch tip is the prerequisite to calculating the driving force for cracks emanating from notches. This article first examines whether two commonly used engineering methods, which are often employed to determine the response at a notch tip, can be applied to evaluate the elastic-plastic response ahead of a notch tip. It is found that both methods would significantly underestimate the stress-strain distribution ahead of a notch tip. Based deformation theories of plasticity, and analytical method is then developed, taking into account of the effects of stress redistribution induced by notch plasticity and the in-plane and through-thickness constraints near the notch root. Predictions are shown to be in close correlation with finite element results.

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Wang CH, Guo WW, Rose LF. A Method for Determining the Elastic-Plastic Response Ahead of a Notch Tip. ASME. J. Eng. Mater. Technol. 1999;121(3):313-320. doi:10.1115/1.2812380.

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A Method for Determining the Elastic-Plastic Response Ahead of a Notch Tip

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