As modern industries are highly being developed, it is required that mechanical parts have to be manufactured with a high precision. In order to have precise parts, error-free designs have to be done before manufacturing with accuracy. For this intention being fulfilled, a mechanical analysis is essential for design proof. Nowadays, FEM simulation is a popular tool for verifying a machine design. In this paper, an impeller, being utilized in a compressor or an oil mixer as an actuator, is studied for an evaluation. The purpose of this study is to present a safety of an impeller for a proof of its mechanical stability. A static analysis for stress, strain, and deformation within a regular usage is examined. This simulation test shows 357.26×106 Pa for maximum equivalent stress and 0.207mm for total deformation. A fatigue test is carried to provide durability and its result shows that minimum safety factor is 3.2889, which guarantees that it runs without a fatigue failure in 106 cycles. The natural frequencies for the impeller is ranged from 228.09Hz to 1,253.6Hz for the 1st to the 6th mode. Total deformations at these natural frequencies are shown from 6.84mm to 12.631mm. Furthermore, Campbell diagram reveals that a critical speed is not found throughout regular rotational speeds. From the test results for the analysis, this paper concludes that the suggested impeller is proved for its mechanical safety and good to utilize at industries.

1. 서 론
2. 임펠러 형상 및 모델링
    2.1 임펠러 형상
    2.2 임펠러 모델링
3. 임펠러 구조해석
    3.1 메시(Mesh) 생성
    3.2 구조해석 조건 적용
    3.3 구조해석의 경계조건
4. 임펠러 구조해석 Simulation
    4.1 정해석
    4.2 피로해석
    4.3 진동 특성
5. 결과 분석 및 결론
    5.1 임펠러 해석 결과 분석
    5.2 결론
References

• Jong Yun Jung(창원대학교 산업시스템및조선해양융합공학부) | 정종윤 Corresponding Author