A Study on Improvement of Strength Safety Factor for K55A1 APU Engine Mounts

Kim, Byung Hyun; Seo, Jae Hyun; Park, Young Il; Kim, Yong Wook; Kim, Byung Ho

doi:2016.19.3.281

J. KIMS Technol > Volume 19(3); 2016 > Article

Journal of the Korea Institute of Military Science and Technology 2016;19(3):281-287.
DOI: https://doi.org/10.9766/KIMST.2016.19.3.281

A Study on Improvement of Strength Safety Factor for K55A1 APU Engine Mounts

Byung Hyun Kim, Jae Hyun Seo, Young Il Park, Yong Wook Kim, Byung Ho Kim

Changwon Center, Defense Agency for Technology and Quality

자주포 보조동력장치 엔진 마운트 강도안전율 향상에 관한 연구

김병현, 서재현, 박영일, 김용욱, 김병호

국방기술품질원 창원센터

Abstract

The purpose of this study is to analyze the vibration characteristics and develop a mounting which can improve the strength safety factor to replace the high failure rate APU(auxiliary power unit) imported metal mounts with rubber mount that can be domestically produced. For this study, we analyzed in 3 kinds of rubber mounts hardness for the natural frequency to avoid the average excited frequency of the APU. In addition, allowed vibration acceleration of rubber mount confirmed to 90.8 g by adding a strength safety factor. To assure the validity of the design, we measure the vibration acceleration equipped with a metal mount and rubber mount 2 species(Hs 50 and 60). As a result, the proposed design method in this study is reasonable because the rubber mounts is excellent strength safety factor and vibration transmissibility than metal mounts.

Key Words: Self Propelled Artillery, Auxiliary Power Unit, Natural Frequency, Strenth Safety Factor