Affiliations: [a] School of Astronautics, Harbin Institute of Technology, Harbin, Heilongjiang, China | [b] Department of Engineering Mechanics, Shijiazhuang Tiedao University, Shijiazhuang, Hebei, China | [c] Department of Civil Engineering, The University of Hong Kong, Hong Kong, China
Correspondence:
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Corresponding author: L.L. Liu, School of Astronautics, Harbin Institute of Technology, Harbin, Heilongjiang, China. E-mail: liulingling2002@126.com
Abstract: The fracture behavior of a penny-shaped crack in a constrained
magnetoelectroelastic cylinder of finite radius under magnetoelectromechanical
loads is investigated. The crack surfaces are assumed to be magnetoelectrically
permeable. Eight kinds of possible boundary conditions at infinity are
considered. The potential function theory and Hankel transform method are used
to obtain a system of dual integral equations, the solution of which is further
given by solving a Fredholm integral equation of the second kind. The field
intensity factors are obtained and analyzed. The effects of both the ratio of
crack radius to cylinder radius and the applied magnetoelectrical loads at
infinity on the stress intensity factor are evaluated. The obtained results
and/or conclusions could be of particular interest to the analysis and design
of smart sensors/actuators constructed from magnetoelectroelastic composite
laminates.
Keywords: Penny-shaped crack, cylinder, field intensity factors, magnetoelectroelastic material
