Crack Analysis in Piezoelectric Semiconductors

Abstract:

Mechanical and electric loads are considered for 2-d crack problems in conducting piezoelectric materials. The electric displacement in conducting piezoelectric materials is influenced by the electron density and it is coupled with the electric current. The coupled governing partial differential equations (PDE) for stresses, electric displacement field and current are satisfied in a local weak-form on small fictitious subdomains. Nodal points are spread on the analyzed domain and each node is surrounded by a small circle for simplicity. Local integral equations are derived for a unit function as the test function on circular subdomains. All field quantities are approximated by the moving least-squares (MLS) scheme.

• Periodical: Key Engineering Materials (Volume 627)
• Pages: 269-272
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.627.269
• Online since: September 2014
• Authors: Jan Sladek*, Vladimir Sladek
• Keywords: Impact Loads, Impermeable Conditions, Intensity Factors, Meshless Local Petrov-Galerkin Method (MLPG), Moving Least-Squares Approximation, Static

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