Electromechanical response of 1–3 piezoelectric composites: A numerical model to assess the effects of fiber distribution

摘要: Abstract A finite element-based numerical model is developed to characterize the effects of fiber distribution in 1–3 piezoelectric active fiber/active matrix composites under primarily static electric fields and elastic stress conditions. Upon identifying 14 characteristic periodic randomized configurations, influence on coupled response ceramic–matrix polymer–matrix with widely different constituent material properties examined. It demonstrated that: (i) while certain arrangements provide a higher packing density than others, fundamental elastic, dielectric constants remain largely insensitive nature (periodic or randomized) distributions matrix; (ii) figures merit composite are also invariant differences distribution; (iii) internal stresses mechanical loads tend be modulated by configuration, square edge providing reduced levels interfacial stresses.