tailieunhanh - Mechanics 1 of materials hibbeler 6th Episode 2 Part 8

Tham khảo tài liệu 'mechanics 1 of materials hibbeler 6th episode 2 part 8', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | 9-27 The square steel plate has a thickness of in. and is subjected to the edge loading shown. Determine the principal stresses developed in the steel. 4 in. ơx 0 ơy o 1 32 psi ax ơy ơx-ơv Ơ1 2 y - 2 2 TỈy O o 322 ƠỊ 32 psi Ơ2 -32 psi Ans Ans Note tan 7P. 2- 32 Ợ - ơy 2 0 ep 45 From Mechanics of Materials Sixth Edition by R. c. Hibbeler ISBN 0-13-191345-X. 2005 R. c. Hibbeler. Published by Pearson Prentice Hall Pearson Education Inc. Upper Saddle River NJ. All rights reserved. This material is protected under all copyright laws as they currently exist. No portion of this material may be reproduced in any form or by any means without permission in writing from the publisher. 9-28 The sirrrpỉy supported beam is subjected to the traction stress To on its top surface. Determine the principal stresses al points A and B. Point A Me p ZgbLdUXdW TgbL 2 _ TgL ƠA --y- - - fe W 5 bd - d Ta o Thus - 7 Totó2 ỉ Ans 2a 1 2a Point B Me p ZgbLdlA dl2 TpbL 2 2t0L ƠB T Ă d w d Tfl 0 2t0L Ơ Ans 1 d a2 0 Ans From Mechanics of Materials Sixth Edition by R. c. Hibbeler ISBN 0-13-191345-X. 2005 R. c. Hibbeler. Published by Pearson Prentice Hall Pearson Education Inc. Upper Saddle River NJ. All rights reserved. This material is protected under all copyright laws as they currently exist. No portion of this material may be reproduced in any form or by any means without permission in writing from the publisher. 9-29 The bell crank is pinned al A and supported by a short link BC. If it is subjected to the force of 80 N determine the principal stresses at a point D and b point E. The crank is constructed from an aluminum plate having a thickness of 20 mm. Point D A - 10 m1 50 mm 50 mm -----150 mm D - 10 tn 12 Qũ Ĩ7A - 3 10 6 m Normal stress aD p- MPa A I 1O 3 10 Shear stress VQ 48 3 10 6 . - MPa It 10- Principal stress Ơ MPa ơy 0 Ti MPa 4-0 ƠJ kPa Ans Ơ1 - 603 kPa Ans Point