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조재웅(Jae-Ung Cho),민병상(Byung-Sang Min),한문식(Moon-Sik Han) 한국기계가공학회 2009 한국기계가공학회 춘추계학술대회 논문집 Vol.2009 No.6
The air resistance about Automotive body is studied by the flow analysis in this study. Maximum air flow velocity is shown with 28 to 30 ㎧ on the upper roof of Automotive body. The air flow does not become regular at Automotive body model 1 but regular at the model of 2 or 3. The maximum air resistance pressure is shown with 413 to 420 Pa at the front bumper of Automotive body. The flow velocity at inlet or middle plane of Automotive body is shown as the contour same with the model of 1, 2, or 3. But the velocity at outlet plane at model 1 is shown as the contour different with the model of 2 or 3.
조재웅(Jae-Ung Cho),민병상(Byung-Sang Min),한문식(Moon-Sik Han) 한국기계가공학회 2009 한국기계가공학회 춘추계학술대회 논문집 Vol.2009 No.6월
The air resistance about Automotive body is studied by the flow analysis in this study. Maximum air flow velocity is shown with 28 to 30 ㎧ on the upper roof of Automotive body. The air flow does not become regular at Automotive body model 1 but regular at the model of 2 or 3. The maximum air resistance pressure is shown with 413 to 420 Pa at the front bumper of Automotive body. The flow velocity at inlet or middle plane of Automotive body is shown as the contour same with the model of 1, 2, or 3. But the velocity at outlet plane at model 1 is shown as the contour different with the model of 2 or 3.
조재웅(Jae-Ung Cho),민병상(Byung-Sang Min),한문식(Moon-Sik Han) 한국기계가공학회 2009 한국기계가공학회지 Vol.8 No.1
This study is to analyze the impact of automotive body with computer simulation. The total deformation, equivalent strain and strain and principal stress are analyzed respectively in case of front, rear and side impacts. The maximum total deformation of side impact is more than 6 times as large as that of rear impact. The maximum equivalent strain or stress of side impact is more than 4 times as large as that of rear impact. These deformation, strain and stress of front impact are a little more than those of rear impact. The maximum principal stress of side impact is more than 4.5 times as large as that of rear impact. This stress of front impact is a little more than that of rear impact.