Picture of athlete cycling

Open Access research with a real impact on health...

The Strathprints institutional repository is a digital archive of University of Strathclyde's Open Access research outputs. Strathprints provides access to thousands of Open Access research papers by Strathclyde researchers, including by researchers from the Physical Activity for Health Group based within the School of Psychological Sciences & Health. Research here seeks to better understand how and why physical activity improves health, gain a better understanding of the amount, intensity, and type of physical activity needed for health benefits, and evaluate the effect of interventions to promote physical activity.

Explore open research content by Physical Activity for Health...

Effect of circular holes on the ratchet limit and crack tip plastic strain range in a centre cracked plate

Chen, Haofeng and Chen, Weihang and Li, Tianbai and Ure, James Michael (2011) Effect of circular holes on the ratchet limit and crack tip plastic strain range in a centre cracked plate. Engineering Fracture Mechanics, 78 (11). pp. 2310-2324. ISSN 0013-7944

[img] PDF
Chen_HF_Pure_Effect_of_circular_holes_on_the_ratchet_limit_and_crack_tip_plastic_strain_range_in_a_centre_cracked_plate_May_2011.pdf - Preprint

Download (418kB)

Abstract

In this paper a centre cracked plate subjected to cyclic tensile loading and cyclic bending moment is considered. The effect of circular holes drilled in the region of the crack tip on the ratchet limit and crack tip plastic strain range is studied. Direct evaluation of the ratchet limit and crack tip plastic strain range is solved by employing the new Linear Matching Method (LMM). Parametric studies involving hole diameter and location are investigated. The optimum hole location for reducing the crack tip plastic strain range with the least reduction in ratchet limit is identified, and located at a distance 10% of the semi-crack length from the crack tip on the side opposite the ligament for both cyclic tensile loading and cyclic bending moment cases. It is also observed that the optimum location is independent of the hole size for both cyclic loading cases.