Contact analysis for collinear multiple cracks in residual stress field

Journal Article · Sun May 01 04:00:00 EDT 1994 · Journal of Pressure Vessel Technology; (United States)

DOI:https://doi.org/10.1115/1.2929571· OSTI ID:7173977

Nishimura, T ^[1]

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1. Mitsubishi Heavy Industries, Ltd., Nagoya (Japan). Nagoya Aerospace Systems Works

A method is proposed for analyzing stress intensity factors and crack profiles for collinear multiple cracks perpendicular to welded joints in an infinite plate. Using the basic solution of a single crack and taking unknown density of fictitious tractions, Fredholm integral equations and algebraic equations are formulated based upon traction-free conditions and crack face displacements, respectively. These equations are solved simultaneously, considering the contact effect of crack surfaces. Using the derived density of fictitious tractions, the stress intensity factors and displacements of multiple cracks are determined. Some numerical examples are analyzed.

• OSTI ID: 7173977
• Journal Information: Journal of Pressure Vessel Technology; (United States), Journal Name: Journal of Pressure Vessel Technology; (United States) Vol. 116:2; ISSN JPVTAS; ISSN 0094-9930
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420200* -- Engineering-- Facilities
Equipment
& Techniques
CRACK PROPAGATION
JOINTS
MECHANICAL STRUCTURES
ORIENTATION
PLATES
STRESS ANALYSIS
STRESS INTENSITY FACTORS
WELDED JOINTS