Numerical Analysis Of Fracture In Smart Composite Structures
Author(s)
M. Kuna
Abstract
Numerical analysis of fracture in smart
composite structures
Meinhard Kuna
Freiberg University of Mining and Technology, Germany,
Institute of Mechanics and Machine Components
Abstract
Modern adaptive mechanical systems consists of composite structures with inte-
grated sensors and actuators made of smart materials, as e.g. piezoelectric ce-
ramics. For the development and application of such smart composite structures,
problems of fracture and fatigue play an essential role. In the paper, the concepts
of piezoelectric fracture mechanics are applied to crack-like defects in smart
composite structures subjected to electrical and mechanical loads. Effective finite
element techniques are suggested for computing the singular coupled electrome-
chanical fields at the crack tips and for determining the fracture controlling pa-
rameters like mechanical as well as electrical stress intensity factors and energy
release rates. Their potential use for fracture analysis
Keywords
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