Energy-Based Optimal Placement of Piezoelectric Actuator on Smart Thin Plate

Abstract Purpose To establish a smart thin plate in which structural health monitoring (SHM) and active vibration control purposes are integrated, the locations of attached piezoelectric ceramic (PZT) actuators as well their applied normalized voltage investigated. Method Normal strains such coupled electro-mechanical systems defined using Kirchoff's classical laminate theory (CLPT), then, by Ritz solution, these normal converted to spatially dependent functions that employed define virtual work for function location voltage. Finally, genetic algorithm (GA)-based iterative optimization is carried out locate determine each them desired modes. Results Three plates with different boundary conditions studied optimal placement PZT actuator/s . The optimally placed where maximum amount exerted reached fulfil perfect excitation needed SHM provide highest damping energy undesired at designated results show optimum lies sum is. Conclusion proposed process valid any mixed on number square minimum computational effort, both can be manipulated via GA achieve done natural mode.