Abstract:

A serious in-car noise problem was found for our newly developed home elevator, which was designed using low-cost and light-weight material for its cab panels. After a series of real-run measurements, the main source for in-car noise was identified to be the car panel vibration. Numerical analysis using the FEM method has also been performed for understanding the panel dynamic behaviors. The cab panels were redesigned based on measurement and numerical analysis results. The newly designed cab gives a nearly 9-dB in-car noise reduction, which enables that type of home elevator to be sold in the Japanese market as a Nippon Otis product. [See NOISE-CON Proceedings for full paper.]