탄화수소계 냉매를 이용한 수냉식 히트펌프의 성능특성에 관한 연구

Abstract

This paper discusses the lateral vibration of a bar which has its tip free. The uniform bar has a solution by summation of some simple exponential functions. But if its shape is not uniform, its solution could be by Bessel's function, or mathematical solution could not be existed. Even if the solution of Bessel's function exists, as Bessel function is a series function, we must get the solution by numerical method. Hereby the author proposes the ununiform beam solution of the matrix method by Ritz's method, and proposes a new deflection shape function.