Abstract: This paper analyzes the vibration and noise levels of permanent magnet synchronous motor (PMSM). Firstly, an equivalent single cylindrical shell model of motor is established, which ...

Abstract: New insights into polarization dynamics in hafnium oxide-based ferroelectrics with cylindrical shell structures are presented based on a phase-field modeling. By introducing in-plane radial ...

Oddly shaped conch shells found at Neolithic archaeological sites dating back 6,000 years could have served as technology for producing an extremely loud noise, scientists have discovered. The tests ...