文档介绍：Seismic Analysis of an Axial Blower using ANSYS
Hyung-Bin Im
LG Electronics, Inc., Core Technology Group
Seoul, Korea
Sewan Kim
LG Electronics, Inc., Core Technology Group
Seoul, Korea
Jintai Chung
Hanyang University, Mechanical Engineering
Seoul, Korea
Abstract
A seismic analysis is one of crucial design procedures of an axial blower used in nuclear power plants. The
blower should withstand and operate under emergency situations such as earthquake. For the seismic
analysis, we performed modal analysis and then evaluated Required Response Spectrum (RRS) from the
given Floor Response Spectrum (FRS). Prior studies have been done similar to this method [1][2].
A finite element model of the blower is established by mercial FEM software, ANSYS. After the
finite element modeling, natural frequencies, mode shapes and the participation factors are obtained from
the modal analysis. The RRS is acquired by numerical approach on the basis of the principle of mode
superposition. We were able to verify the structural safety of the axial blower and confirmed the validity of
the present seismic analysis results.
Introduction
Equipment used at nuclear power plants requires robust and reliable designs because in case of disaster,
such as earthquake, small damage can turn into an unpredictable result. Blower used at nuclear power
plants is im