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Safety Cage Homologation 위한 설계, 해석 및 제작
박민근(Mingeun Park),나종호(Jongho Na),박준규(Junegyu Park) 한국자동차공학회 2016 한국자동차공학회 학술대회 및 전시회 Vol.2016 No.11
Safety is very important factor in Racecar. So Roll Cage for Racecar has been developed and optimized using FEA or CAE program. But In this Country, Many Motor Sports Teams have not been proceeding this process. In order for Motor Sports in Korea to improve, Vehicle Engineering is very important factor. So In this paper, we introduce easy design and analysis for many Motor Sports Team in Korea. Also we verified our i30 Racecar Roll Cage’s safety and stiffness using CAE program. And we compared Hyundai WRC i20 Safety Cage’s stiffness.
분해모델과 구멍 메움 알고리즘을 이용한 냉장고 내부 용적의 자동 계산
박래성(Raesung Park),Jianhui Fu,정융호(Yoongho Jung),박민근(Mingeun Park) (사)한국CDE학회 2017 한국CDE학회 논문집 Vol.22 No.1
Internal capacity of a refrigerator is an important indicator for design and purchasing criteria. The components facing the internal space may have holes or gaps between parts. In traditional way, design engineers manually remodeled the parts to fill the holes and the gaps for enclosed boundary of the internal space. Then they calculated internal volume by subtracting the assembly of parts from its enclosing volume. However, filling holes and gaps is not an automated process requiring a plenty of labor and time. In this research, we have developed a voxel-based method to estimate the internal volume of a refrigerator automatically. It starts transforming all components facing the interior space into voxels and fills all holes and gaps automatically by the developed hole-filling algorithm to form a completely closed boundary of the assembly. Then, it identifies the boundary voxels that are facing to the internal voxels with any part of the component. After getting the intersection points between the boundary voxels and the surfaces of components, it generates the boundary surface of triangular facets with the intersection points. Finally, it estimates the internal volume by adding volume of each tetrahedron composed of a triangle of boundary surface and an arbitrary point.
Jianhui Fu,박래성(Raesung Park),박민근(Mingeun Park),정융호(Yoongho Jung) (사)한국CDE학회 2016 한국 CAD/CAM 학회 학술발표회 논문집 Vol.2016 No.동계
Refrigerator has been used across the various fields in society as a device for keeping cold foods or medications. As the refrigeration technology advances, important issue such as enlargement has been arised. It is therefore important that the design having a maximum internal space volume in a limited space are very important. The internal space of refrigerator is consisted of a component such as a door and the inner case. The volume calculation of that is performed by a Boolean operation function of the 3D CAD software. However, many pre-processing operations by the user, such as hole filling and construction closed space by filling in the gaps between parts take a lot of time. In this research, we developed a decomposition modelbased automatic volume calculation program of refrigerator internal space satisfying the interior volume measurement standard. Though we have developed the program by applying to refrigerator assembly, application of the program can be extended to the assembly made up of many parts.