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Special Graduate Schools
Graduate School of Engineering
Department of Mechanical Engineering
3. Theses(Master)
자동차 정션 블록의 열적 특성 및 진동 특성에 대한 수치 해석적 연구
- Alternative Title
- A Numerical Study on Thermal and Vibrational Characteristics of the Automotive Junction Block
- Author(s)
- 김관희
- Alternative Author(s)
- Kim Kwanhee
- Advisor
- 김동권
- Department
- 공학대학원 기계공학과
- Publisher
- The Graduate School, Ajou University
- Publication Year
- 2017-08
- Language
- kor
- Abstract
- 본 논문에서는 자동차 정션 블록의 강건 설계를 위하여 수치 해석적 방법을 통해 문제점을 검증하는 것을 제안하였다. 정션 블록은 차량 내 전류 분배와 통신, 바디 제어를 담당하는 부품이며 과도한 발열로 인한 열화, 진동으로 인한 파손 문제가 주로 발생한다. 이를 사전에 예방하기 위해 열 유동 해석과 진동 해석 방법을 개발하였다. 정션 블록 구성요소에 대한 발열 특성을 확인하기 위해 퓨즈, 릴레이에 대한 시편을 제작하여 온도 상승 시험을 실시하였고 동일조건의 해석을 진행하여 물성을 구축하였다. 열 유동 해석을 위해 정션 블록의 복잡한 형상을 단순화 하고 전류의 흐름에 따라 근사모델을 구성하였다. 열 유동 해석 한 결과 시험 값과 평균 2.17℃, 최대 6.88℃ 오차가 발생하였다. 진동해석은 엔지니어링 플라스틱의 인장 및 피로시험을 수행하여 물성치를 확보하였다. 모달 해석을 통해 고유진동수를 도출하고 랜덤진동해석으로 수명을 예측하였다.
- Alternative Abstract
- In this thesis, it was proposed to verify the problem by means of numerical analysis for the robustness of the vehicle junction block. The junction block is the part of the vehicle that is responsible for the distribution of current, the communication and the body control, and is usually damaged by excessive heating and vibration due to excessive heating. Analysis of heat flow and vibration analysis method is developed in order to prevent it in advance. In order to verify the heating characteristics of the junction block components. A specimen was produced by producing a temperature increase test for the purpose of the fuse, relay. The analysis was conducted the same conditions to construct the properties. Heat flow analysis for the junction block was in accordance with the flow of power and simplify complex features of the approximate model configuration. The result of analysis indicates that average error was 2.17℃, maximum error was 6.88℃. In the case of vibration analysis, the tensile and fatigue testing of engineering plastics was performed to obtain the properties of the material. Through the modal analysis, a natural frequency was derived, prediction of life cycle through the random vibration analysis.
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