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혼합모드 균열의 응력확대계수 해석과 정도 개선에 대한 고찰
배원호(Won-Ho Bae) 한국산업융합학회 2004 한국산업융합학회 논문집 Vol.7 No.4
The finite element method were used to determine the stress intensity factor of cracked plate. The stress method, displacement method and J Integral are most popular finte element method. ANSYS proposed another a kind of displacement method. In this paper, it was examined that the accuracy and utility of the ANSYS method could believable to determine the stress intensity factors of centered inclined crack. Generally, inclined crack has two portion of stress intensity factors, tensile mode F1 and shear mode F2. For the purpose of increasing the accuracy of stress intensity factors, examined the effect of the numbers of nodes and elements, crack tip element size and number of partition of the crack tip vicinity. It was found that the method proposed by ANSYS is useful and has high accuracy. Accuracy of calculated stress intensity factors was increased by increase of the number of nodes and elements, and at the small size of crack tip elements can get more highly accuracy.<br/> <br/>
배성원(Seong Won Bae),허덕(Deok Huh),오세기(Saikee Oh),진심원(Simon Jin) 대한설비공학회 2010 대한설비공학회 학술발표대회논문집 Vol.2010 No.6
The pipe line vibration control is one of the most difficult items for AC company until 2005. Even though several test methods were frequently used for vibration control before development of ACON, those were complex, inconvenient and time & resource spending job. To reduce pipe line development time and show vibration phenomena, the pipe line vibration analysis program for air conditioner(ACON) was developed for 2 years.