The aerospace community has long studied active flutter control. Recently, a novel idea, which is energy harvesting from wing vibration under the assumption that certain magnitude of allowed, been attracting attention. balancing problem between piezoelectric and control an research topic. In our previous work, we developed coupled analysis system for piezoelectric–structure–fluid interaction pr...

The application of ultrasonic vibration to the casting process can be realized through mould (die) vibration. However, resonant is always accompanied by a non-uniform distribution at different parts, which may induce complex liquid flow and affect fluidity during filling process. influence on AlSi9Cu3 alloy was studied with gradients. It found that generate two opposite effects fluidity: first,...