3-79
;
3-80
;
10 mm 20 mm 15 mm
Square cross sections
30
40
50
40
kN
40
kN
AC
14.00 in
A
C
E
L1
L
B
FBD of joint C BC
3-81 [
:
3-82
W = Weight of load
AB
35°
90°
Vector
Triangle
AB
FBD of Joint
B
Problems 83-90 follow similar solution procedure to that for Problem 82.
Results are summarized on page following Problem 3-91.
3-91
Problems 92-99 follow similar solution procedure to that of Problem 91.
Results are summarized on the following page.
Note: Data from table 2-13 for problems 96-99 require conversions
as shown in the lower table on the following page.
Metals
Length
Prob. Material sy0.9*syE L A Elong.
betw. gage
Strain Force
No. (ksi) (ksi) (ksi) (in) (in2) (in) marks (in) (in/in) (lb)
3-82 SAE 1040 CD 82 73.8 30000 2.000 0.200 0.00492 2.0049 0.00246 14760
3-83 SAE 5160 OQT 700 238 214 30000 2.000 0.200 0.01428 2.0143 0.00714 42840
Plastics and Composites
Length
Prob. Material su0.5*suE L A Elong.
betw. gage
Strain Force
No. MPa MPa MPa (mm) (mm2) (mm)
marks (mm)
(mm/mm)
(kN)
3-91 Nylon 66, dry+146 73 8700 50.0 200 0.41954 50.420 0.00839 14.60
3-92 ABS, high impact+34 17 1720 50.0 200 0.49419 50.494 0.00988 3.40
Prob. Material susuE E
No. ksi MPa ksi MPa
3-96 Glass/epoxy composite 114 786 4000 27580
SOLUTIONS TO PROBLEMS 3-82 TO 3-90
SOLUTIONS TO PROBLEMS 3-91 to 3-101
Problems 3-96 to 3-99: Data conversion of units
Stress Concentration for Direct Axial Stresses
3-100
[
3-103
[
3-104 ; [
3-107
[
3-109
[
3-111
[
3-114
[
3-116
[
3-119
[
[
3-121 [
3-122
3-124
3-125 [
3-126
Bearing Stress
3-127
3-128
3-129
3-132 [
3-134 [Frim
3-135
3-136
3-137
3-138
3-140
3-141
3-142
3-143
3-145
3-146 [