서지주요정보
박판 페어의 기계적 접합을 위한 공정에 관한 연구 = Study on the mechanical joining process of a sheet metal pair
서명 / 저자 박판 페어의 기계적 접합을 위한 공정에 관한 연구 = Study on the mechanical joining process of a sheet metal pair / 윤희주.
저자명 윤희주 ; Yoon, Hee-Ju
발행사항 [대전 : 한국과학기술원, 2002].
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소장정보

등록번호

8012789

소장위치/청구기호

학술문화관(문화관) 보존서고

MME 02046

휴대폰 전송

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초록정보

The established technologies for joining sheet metals are welding, riveting and bolting. However, it is difficult to join dissimilar sheet metals and unweldable materials by welding. Riveting and bolting have a disadvantage that additive part must be provided. The mechanical joining process of a sheet metal pair has been developed in order to replace the resistance spot welding process in case that joining of dissimailar sheet metals, mechanically unweldable materials and coated sheet metals with different thicknesses are needed. Form-joining or clinching, a kind of mechanical joining process, is defined as the joining process of a sheet metal pair by geometric constraint imposed by plastic deformation of the workpieces without any additive part . There are many commercial form-joining devices. It has been reported that the joining strength by commercial form-joining apparatus is 50 - 70 percent of that by resistance spot welding. Therefore, a new form-joining process is required in order to improve the joining strength. In this work, a 2-step form-joining process with a secondary punch is proposed. The device is designed to improve the joining strength by increasing the geometric constraint of the deformed shape by combining a primary punch, a secondary punch and a female die. A sheet metal pair is first deformed into the circular female die by a drawing process. Then, the drawn sheet metal pair is squeezed between the primary punch and the secondary punch, The squeezed sheet metal deforms along the inclined surfaces of the inner die and the secondary punch. The design parameters are systematically investigated for the proposed 2-step form-joining process. The objective functions are defined as the geometric dimensions of the joint. The parameters are then designed by Taguchi method and finite element analysis. In order to verify the improved joining strength by the designed process, the tensile-shear strength, the peel-tension strength and the asymmetric peel-tension strength are compared with those by the TOX process and those by resistance spot welding. The tensile-shear strength by the designed process amounts to 76 percent of the strength by resistance spot welding.

서지기타정보

서지기타정보
청구기호 {MME 02046
형태사항 iv, 75 p. : 삽도 ; 26 cm
언어 한국어
일반주기 저자명의 영문표기 : Hee-Ju Yoon
지도교수의 한글표기 : 양동열
지도교수의 영문표기 : Dong-Yol Yang
학위논문 학위논문(석사) - 한국과학기술원 : 기계공학전공,
서지주기 참고문헌 : p. 32-34
주제 기계적 접합
클린칭
인장-전단 강도
박리-인장 강도
Mechanical joining
Clinching
tensile-shear strength
peel-tension strength
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