Application of Probability to Mechanical Design
141
0.0940-0.0935 in. while the hole is 0.0932-0.0930 inches. Find the mean and
standard deviation for the combined stress near the pin in the flange, as well
as the factor of safety and probability of failure for the 6061-T6 aluminum
flange. Also, find the mean and standard deviation of the force to press
the pin in.
Use the easier card sort solution.
PROBLEM 2.9
A gull wing solder tab Fig. Prob 2.9 is modeled as a beam (solder tab) resting
on an elastic foundation (solder) which has below the tab a circuit board
(assumed rigid). The forces are
1
Fx =Fy =Fz = 1 oz ±~oz
h = L = 2b = 0.100"±0.010"
Esotder = 4 × 106 psi Ecopper = 16 × 106 psi
tc = 0.020" ± 0.002"
0.004" < t < 0.010"
Figure Problem 2,9
141
0.0940-0.0935 in. while the hole is 0.0932-0.0930 inches. Find the mean and
standard deviation for the combined stress near the pin in the flange, as well
as the factor of safety and probability of failure for the 6061-T6 aluminum
flange. Also, find the mean and standard deviation of the force to press
the pin in.
Use the easier card sort solution.
PROBLEM 2.9
A gull wing solder tab Fig. Prob 2.9 is modeled as a beam (solder tab) resting
on an elastic foundation (solder) which has below the tab a circuit board
(assumed rigid). The forces are
1
Fx =Fy =Fz = 1 oz ±~oz
h = L = 2b = 0.100"±0.010"
Esotder = 4 × 106 psi Ecopper = 16 × 106 psi
tc = 0.020" ± 0.002"
0.004" < t < 0.010"
Figure Problem 2,9