Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : September 08, 2019 - September 11, 2019
This paper deals with the rocking motion of cabinets and the acceleration of electronics in cabinets. In power plants or chemical plants, there are many control cabinets containing important electronics. In many cases, these cabinets are put directly. Thus, it is thought that in the worst case, cabinets may turn over by rocking motion during earthquakes and electronics may be in danger of breaking. Therefore, it is needed to develop methods that can reduce rocking motion and prevent electronics damage simultaneously. In this study, adjacent cabinets are connected with an elasto-plastic damper. The elasto-plastic damper has a bilinear hysteretic characteristic and can absorb the energy of earthquake inputs. Firstly, we evaluate the maximum rocking angle of single cabinet and the maximum acceleration of electronics in single cabinet for seismic wave input. Next, we simulate connected cabinets under the same conditions. In these simulations, it is assumed that cabinets do not collide with each other. Thus we compare the maximum rocking angle and the maximum acceleration of single cabinet with that of connected cabinets.
