인장시험과 유한요소해석을 통한 농업용 트랙터 보호구조물용 강재의 물성치 결정을 위한 연구
Determination of the Properties of Structural Steel for Agricultural Tractor Roll-over Protective Structure by Tensile Test and Finite Element Analysis
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초록
This study was carried out to standardize the material properties of roll-over protective structure (ROPS) for agricultural tractor. The material properties which were obtained from stress-strain curve, a result of tensile test stress, were used to apply to the virtual test and varied from one production lot to the other and from one manufacturer to the other. And the finite element analysis was performed on the ROPS according to the OECD code. The results show that the load-displacement curves of virtual test were approximately equal to the actual test curves. The manufacturer or lot has been shown to have little effect on the properties of the material. Therefore, it is expected that the representative values that can be used in the finite element analysis can be determined by averaging the property values.
Abstract
This study was carried out to standardize the material properties of roll-over protective structure (ROPS) for agricultural tractor. The material properties which were obtained from stress-strain curve, a result of tensile test stress, were used to apply to the virtual test and varied from one production lot to the other and from one manufacturer to the other. And the finite element analysis was performed on the ROPS according to the OECD code. The results show that the load-displacement curves of virtual test were approximately equal to the actual test curves. The manufacturer or lot has been shown to have little effect on the properties of the material. Therefore, it is expected that the representative values that can be used in the finite element analysis can be determined by averaging the property values.
참고문헌 (7)
- National Institute of Agricultural Sciences, "Current Status of Damage for Farmers Related to Agricultural Machineries", 20~ (2019)
- C. Song, "A Study on the Geometric Nonlinear Analysis of ROPS Structures", Autumn Conference of The Korean Society of Mechanical Engineers, pp.559~564 (1998)
- 하창욱, "OECD규정(제4항)에 기초한 농업용 트랙터 캐빈의 유한요소해석", Journal of Biosystems Engineering, 28(4), pp.305~314 (2003), 한국농업기계학회
- 장효성, "다구찌 실험계획을 이용한 트랙터 캐빈 프레임의 최적설계", 한국산학기술학회논문지, 16(11), pp.7377~7384 (2015), 한국산학기술학회[DOI]
- Korean Agency for Technology and Standards, "KS B 0802: 2013 - Method of tensile test for metallic materials", 6~ (2013)
- "OECD Standard, Code for the Official Testing of Protective Structures on Agricultural and Forestry Tractors (Static Test)", 7~17 (2019)
- "OECD Standard, Code for the Official Testing of Rear Mounted Roll-over Protective Structure on Narrow-track Agricultural and Forestry Tractors", 8~22 (2019)