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Mechanics 1 of materials hibbeler 6th Episode 2 Part 2

Tham khảo tài liệu 'mechanics 1 of materials hibbeler 6th episode 2 part 2', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | 6-90 The beam has a rectangular cross section as shown. Determine the largest load p that can be supported on its overhanging ends so that the bending stress does not exceed - 10 MPa. il250mm 150 mm -i- 0 15 0.253 1.953125 10 4 m4 Me 10 10 1.5P 0.125 1.953125 10 4 p L_. f - M -5P 5m t p p 10.4 kN 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. 6-91 The beam has the rectangular cross section shown. If p 12 kN determine the absolute maximum bending stress in the beam. Sketch the stress distribution acting over the cross section. 250 Him 150 nun From Prob. 6-90 M 1.5P 1.5 12 1O3 18000 N m z 1.953125 10 4 m4 ơmii J 2- 11.5MPa I 1.953125 10-4 Ans 115 Mf 4 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. 6-92 A log that is 2 ft in diameter is to be cut into a rectangular section for use as a simply supported beam. If the allowable bending stress for the wood is Oaliow 8 ksi determine the required width b and height h of the beam that will support the largest load possible. What is this load p 24 2 b2 h2 8 12 48P 2 .7 6 bh 7777 48 P 8000 b 24 2-fc3 0.036 p 24 2- 3 b2 0.036 0 db b 13.856 in. Thus from the above equations b 13.9 in. h 19.6 in. p 148 kip Ans Ans Ans From Mechanics of Materials Sixth Edition by R. c. Hibbeler ISBN 0-13-191345-X. 2005 R. c. Hibbeler. .