http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
점용접 시 압흔 깊이 감소를 위한 최적 용접조건 선정에 관한 연구
서승일,이재근,장상길,차병우 대한용접접합학회 1996 대한용접·접합학회지 Vol.14 No.2
In this paper, authors are trying to find optimum spot weldig conditions to minimize indentation of the plate surface which is crucial to quality of stainless rolling stocks. At first, to derive a simple equation to estimate the depth of indentation, a simplified one-dimensional bar model is proposed and validity of the model is confirmed by experiments. And also, to find proper welding conditions giving satisfied tensile strength of the welded joint, a simple formula is derived referring to the standard spot welding conditions by AWS. Optimization problem is formulated to find welding conditions such as welding current, time and applied force which give minimum indentation and proper tensile strength of joint, and solutions are found out. According to the results, the depth of indentation can be expressed by applied electrode froces and it can be shown that an optimum applied force exists.
스텐레스 차체 스폿용접부의 최적 피치 선정에 관한 연구
서승일(Seo Seung-il),차병우(Cha Byoung-woo) 한국철도학회 1998 한국철도학회 학술발표대회논문집 Vol.- No.-
The pitch of spot-weld is a important variable in a view of both production cost and strength of car-body. Various conditions for the selection of pitches have been researched and especially in this paper the buckling analysis is carried out for the 2-sheet pannel structures. The optimal pitch is obtained by optimization program and FEM, which can enhance the buckling strength.