SLM공정에 의한 3차원 타원셀 허니컴 제조 및 기계적 특성 평가 = Fabrication of Elliptic Cell Honeycombs by SLM and Evaluation of Mechanical Characteristics

목차 (Table of Contents)

• 차 례
• 1. 서론 ·················································································································· 1
• 1.1 연구 배경 ·············································································································· 1
• 1.1.1 규칙적 다공성 소재 ····················································································· 1
• 1.1.2 금속 3D 프린팅 제조 공정 ········································································ 2
• 1.1.3 금속 3D 프린팅 공정에 의한 규칙적 다공성 소재 ······························ 3
• 1.2 연구 목적 및 내용 ······························································································ 4
• 2. SLM 공정 기초 연구 ····················································································· 5
• 2.1 SLM 공정 조건 설계 ··························································································· 5
• 2.2 SLM 공정 조건에 따른 조형체 특성 분석 ····················································· 6
• 2.2.1 조형체의 상대밀도 ······················································································· 6
• 2.2.2 조형체의 경도 ······························································································· 7
• 2.2.3 조형체의 미세조직 ······················································································· 7
• 2.2.4 SLM 공정 조건 결정 ···················································································· 8
• 3. 타원 셀 허니컴 설계 및 해석 ···································································· 9
• 3.1 타원 셀 허니컴 단위셀 설계 ································································ 9
• 3.2 타원 셀 허니컴 유한요소해석 ···························································· 10
• 3.2.1 유동응력 ····································································································· 10
• 3.2.2 유한요소해석 조건 결정 ········································································· 11
• 3.2.2.1 요소밀도의 영향 ···················································································· 11
• 3.2.2.1 단위 셀 배열의 영향 ············································································ 11
• 3.3 설계변수에 따른 압축특성 해석 ···································································· 12
• 4. SLM 공정을 이용한 타원셀 허니컴 제작 및 특성평가 ····················· 14
• 4.1 SLM을 이용한 타원셀 허니컴 제작 ······························································ 14
• 4.2 타원 셀 허니컴 형상 비교 ·············································································· 14
• 4.3 타원 셀 허니컴 압축특성 평가 ······································································ 15
• 4.3.1 압축특성 평가 방법 ··················································································· 15
• 4.3.2 타원의 장·단축비 영향 ·············································································· 16
• 4.3.3 상대밀도의 영향 ························································································· 18
• 5. 결 론 ·············································································································· 20
• 참고문헌 ············································································································· 22
• Abstract ·············································································································· 67