Problem 1.C5
A load P is supported as shown by two wooden members of uniform rectangular cross section that are joined by a simple glued scarf splice. (a) Denoting by ?U and ?U, respectively, the ultimate strength of the joint in tension and in shear, write a computer program which, for given values of a, b, P, ?U, and ?U, expressed in either SI or U.S. customary units, and for values of ? from 5 to 85° at 5° intervals, can calculate (i) the normal stress in the joint, (ii) the shearing stress in the joint, (iii) the factor of safety relative to failure in tension, (iv) the factor of safety relative to failure in shear, and (v) the over¬all factor of safety for the glued joint. (b) Apply this program, using the dimensions and loading of the members of Probs. 1.29 and 1.31, knowing that ?U = 150 psi and ?U = 214 psi for the glue used in Prob. 1.29 and that ?U = 1.26 MPa and ?U = 1.50 MPa for the glue used in Prob. 1.31. (c) Verify in each of these two cases that the shearing stress is maximum for ? = 45°.
You might also like to view...
At the end of Reconstruction, Southern whites disenfranchised African Americans using
A. literacy requirements. B. poll taxes. C. onerous and intimidating voter registration laws. D. lynching. E. All of these choices are correct.
The pitch of a blade refers to
a. the angle the blade is in the machine b. the angle cut with the blade c. the number of teeth per inch of saw blade d. the number of teeth needed on the board
Technician A says that the sum of the voltage drops in a series circuit should equal the source voltage. Technician B says the current (amperes) varies depending on the value of the resistance in a series circuit. Which technician is correct?
A) Technician A B) Technician B C) Both technicians D) Neither technician
Bimetal devices can be used to sense excessive current in a circuit.
Answer the following statement true (T) or false (F)