First Edition CHAPTER 1 2 Statics and Mechanics
- Slides: 43
First Edition CHAPTER 1 2 Statics and Mechanics of Materials Ferdinand P. Beer 휨을 받는 보의 해석과 설계 E. Russell Johnston, Jr. (Analysis and Design of Beams for Bending) John T. De. Wolf David M. Mazurek © 2011 The Mc. Graw-Hill Companies, Inc. All rights reserved.
First Edition Statics and Mechanics of Materials 12장의 내용 서론 전단력도와 휨모멘트도 문제 12. 1 문제 12. 2 하중, 전단력, 휨모멘트 사이의 관계 문제 12. 3 문제 12. 5 휨에 대한 등단면보의 설계 문제 12. 8 © 2011 The Mc. Graw-Hill Companies, Inc. All rights reserved. 12 - 2
First Edition Statics and Mechanics of Materials 서론 지점 종류에 의한 보의 분류 그림 12. 2 © 2011 The Mc. Graw-Hill Companies, Inc. All rights reserved. 12 - 4
First Edition Statics and Mechanics of Materials P = + + P P P SFD -P + © 2011 The Mc. Graw-Hill Companies, Inc. All rights reserved. 12 -7 -1
First Edition Statics and Mechanics of Materials 중요 © 2011 The Mc. Graw-Hill Companies, Inc. All rights reserved. 12 – 7 -2
First Edition Statics and Mechanics of Materials 중요 L 기울기(w) 기울기(0) 기울기 © 2011 The Mc. Graw-Hill Companies, Inc. All rights reserved. 기울기(0) 12 – 7 -3
First Edition Statics and Mechanics of Materials 중요 WL © 2011 The Mc. Graw-Hill Companies, Inc. All rights reserved. WL WL 12 – 9 -1
First Edition Statics and Mechanics of Materials 중요 WL © 2011 The Mc. Graw-Hill Companies, Inc. All rights reserved. WL 12 – 9 -2
First Edition Statics and Mechanics of Materials 하중, 전단력, 휨모멘트 사이의 관계 • 하중과 전단력 사이의 관계: (12. 5 ) (12. 7 ) 그림 12. 11 • 전단력과 휨모멘트 사이의 관계: (12. 7 ) (12. 8 ) © 2011 The Mc. Graw-Hill Companies, Inc. All rights reserved. 12 - 16
First Edition Statics and Mechanics of Materials 하중, 전단력, 휨모멘트의 관계 하중 (외력) ↓ 적분 ↑ 미분(기울기) 전단력 ↓ 적분 ↑ 미분(기울기) 휨 모멘트 © 2011 The Mc. Graw-Hill Companies, Inc. All rights reserved. 12 – 16 -1
First Edition Statics and Mechanics of Materials 문제 12. 3 • 전체 보의 자유물체도에서 A, D점의 반력을 구한 다. • 하중과 전단력 사이의 관계를 이용하여 전단력도 를 그린다. © 2011 The Mc. Graw-Hill Companies, Inc. All rights reserved. 12 - 20
First Edition Statics and Mechanics of Materials 문제 12. 4 • 전체 보의 자유물체도에서 A, C점의 반력을 구한 다. • 하중과 전단력 사이의 관계를 이용하여 전단력도 를 그린다. © 2011 The Mc. Graw-Hill Companies, Inc. All rights reserved. 12 - 23
First Edition Statics and Mechanics of Materials 문제 12. 5 • 전단력과 휨모멘트 사이의 관계를 이용하여 휨 모멘트도를 그린다. C 점의 휨모멘트는 자유물체도와 맞는다. © 2011 The Mc. Graw-Hill Companies, Inc. All rights reserved. 12 - 27
First Edition Statics and Mechanics of Materials 문제 12. 7 • 전체 보의 자유물체도를 고려, A, B의 반력을 구한다. • 전단력도를 그리고 최대 휨모멘트 작용 위치 를 구한다. • 최대 휨모멘트 © 2011 The Mc. Graw-Hill Companies, Inc. All rights reserved. 12 - 32
First Edition Statics and Mechanics of Materials 문제 12. 7 • 위 휨모멘트를 받아 내는 최소단면계수를 계산한 다. • 보의 최소 요구깊이 · 18 k. N © 2011 The Mc. Graw-Hill Companies, Inc. All rights reserved. 12 - 33
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