유한요소법을 이용한 절연 고소작업차 붐의 최적화 연구 = A study on optimization of the insulation telescopic aerial boom using the finite-element method

다국어 초록 (Multilingual Abstract)

Aerial platform truck are used for the high places of construction and maintenance and inspection machines. In addition aerial platform truck is being used in a wide variety of fields BY improve the working environment, the efficiency of the operation.
The telescopic aerial lift boom system is used to transfer objects to elevated position or to facilitate work at high locations. Occasionally, user’s careless operation or overloading on the working platform causes it to rollover. As the length increases compared with the width or the height of the cross section of the boom system, the intensity and rigidity are lowered along with the safety. Accordingly, a countermeasure is needed. In this paper, the structural analysis of the design of composite-insulated telescopic aerial lift boom system is presented. The structural analysis done with the aid of FEA software enabled the evaluation of the initial design in order to establish baseline structural performances under the defined conditions. Due to the complexity of the actual system which includes various contact conditions and nonlinear materials, the simplified finite element analysis model is verified by experimental measurement. The telescopic aerial lift boom with insulation performance is designed and the comparative verification is done by Finite element analysis (FEA) software.
In this paper show the result of FEM analysis. On the basis of The actual experiment of telescopic aerial lift boom system. In this paper, we compare existing steel boom with composite-insulated telescopic aerial boom(Applying 4th boom of GFRP) proposed. A point of stress concentration was verified 1st boom. In the case of the existing steel boom contrast GFRP boom, the weight was lightweight. As to the boom of the interpretation result GFRP material, the strain increased in comparison with the existing boom. However, equivalent stress and maximum shear stress was decreased in the GFRP boom.

목차 (Table of Contents)

• 제 1 장 서 론 1
• 1.1 연구 배경 1
• 1.2 국내외 기술현황 3
• 1.2.1 국내 관련 기술현황 3
• 1.2.2 국외 관련 기술현황 4
• 제 2 장 이론적 배경 5
• 2.1 유한요소법 5
• 2.1.1 해석 기법 6
• 2.2 최적화 기법 8
• 2.3 Von-Mises Stress 이론 13
• 2.3.1 Von-Mises Stress 이론 13
• 2.3.2 Von-Mises Stress 항복조건 14
• 제 3 장 고소작업 Boom의 기초 설계 20
• 3.1 End, 3rd, 2nd, 1st Boom 기초 설계 20
• 3.2 End Boom의 재질 및 성형 방법 선정 25
• 3.2.1 End Boom 재료 선정 25
• 3.2.2 성형 방법 27
• 제 4 장 유한요소해석 기법의 검증 29
• 4.1 기존 28m급 고소작업차의 유한요소해석결과 및 실험결과 비교
• 29
• 4.1.1 응력해석을 위한 가속도 센서 부착 29
• 4.1.2 Boom 시스템의 유한요소해석 각도 결정 32
• 4.1.3 28m 급 고소작업차의 물성치 및 Boom 시스템 제원 36
• 4.1.3 28m 급 고소작업차의 유한요소해석 수행 및 결과 분석 37
• 제 5 장 절연 Boom 최적화 설계 42
• 5.1 절연 End Boom의 두께 별 해석 수행 42
• 5.2 절연 End Boom 최적 설계 49
• 5.3 절연 End Boom해석 결과 53
• 5.4 절연 Boom 진동 특성 해석 57
• 제 6 장 결론 및 고찰 60
• 참고문헌 62