COSMOS Chapter 6 Solution 70 | Michigan State University - Edubirdie

University:
Michigan State University
Course:
ERG 160 | Success in Science, Technology, Engineering, and Mathematics
Academic year:

2024
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206

Pages:

1
Author:

Sean Horton

COSMOS: Complete Online Solutions Manual Organization System Chapter 6, Solution 70. Structure (a): Non-simple truss with r = 3, m = 16, N = 10, so 2N > m + r ∴ partially constrained ! Structure (b): Non-simple truss with r = 3, m = 15, N = 10, so 2N > m + r ∴ partially constrained ! Structure (c): Non-simple truss with r = 4, m = 16, N = 10, so N = 2m + r Examine Forces: FHJ = 0, FIJ = P C By inspection of joint J, Then, by inspection of joint H, By inspection of joint I, FFH = 0, FGI = 0, FGH = P C Iy = 0 Although several members carry no load with the given truss loading, they do constrain the motion of GH and IJ. Truss ABFG is a simple truss with r = 3, m = 11, N = 7 (2N = r + m) so the structure is completely constrained, and determinate. ! Vector Mechanics for Engineers: Statics and Dynamics, 8/e, Ferdinand P. Beer, E. Russell Johnston, Jr., Elliot R. Eisenberg, William E. Clausen, David Mazurek, Phillip J. Cornwell © 2007 The McGraw-Hill Companies.

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