(Questions 1 and 2) Two links are connected by a single pin and a tensile force,

Question

(Questions 1 and 2) Two links are connected by a single pin and a tensile force, F, is applied. The links and pin are made from 6061 Aluminum (G-35 ksi,20 ksi). The dimensions of the link cross-section are 2 (in) high by 0.375 (in) thick. (Your work on this problem must be completely your own work You can discuss concepts with others, but not answers.) 1) (5 pts.) Determine the optimal diameter, d, for the pin in inches to three decimal places 2) (5 pts.) Determine the maximum force, F, to the nearest integer pound that can now be applied to the linkage before incurring permanent deformation.

Explanation / Answer

1. Cross section area of the pin and link must be same

hence, 2*0.375=3.14*r2 {r is the radius of the pin}

r=0.488 inches

dia=0.976 inches

2. Just before permanent deformation y=F/A

35=F/(3.14*r2)

F= 26.172 ksi-in2 - answer

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