A structural support for a manufactured from a circ the cross section of the rc textbook. Condition #2: The same structural supp

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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Condition #1:
A structural support for a machine is subjected to a static compression load of 20 kN. The support
manufactured from a circular rod made from SAE 1040 Hot Rolled steel. Specify suitable diameter for
the cross section of the rod based on the basic size. Steel data are available in Table A-10 from the
textbook.
is
Condition #2:
The same structural support of the basic size determined in Condition 1 is subjected to a tensile load of
15 kN that is repeated several thousand times over the life of the machine. This load is not an addition to
the 20 kN. Specify a suitable steel that is suitable to this application based on the basic size determined in
Condition #1. Loading of Condition #1 does not apply here.
Condition #3:
The same structural support from Condition 2 is heated from room temperature of 25°C. The support is
placed inside a frame on both ends. There is a total clearance of 0.2 mm between the support and its
frame. Initial length of the rod is 200 mm. Specify the maximum temperature that the support can be
heated to without exerting any stress to the frame.
Transcribed Image Text:Condition #1: A structural support for a machine is subjected to a static compression load of 20 kN. The support manufactured from a circular rod made from SAE 1040 Hot Rolled steel. Specify suitable diameter for the cross section of the rod based on the basic size. Steel data are available in Table A-10 from the textbook. is Condition #2: The same structural support of the basic size determined in Condition 1 is subjected to a tensile load of 15 kN that is repeated several thousand times over the life of the machine. This load is not an addition to the 20 kN. Specify a suitable steel that is suitable to this application based on the basic size determined in Condition #1. Loading of Condition #1 does not apply here. Condition #3: The same structural support from Condition 2 is heated from room temperature of 25°C. The support is placed inside a frame on both ends. There is a total clearance of 0.2 mm between the support and its frame. Initial length of the rod is 200 mm. Specify the maximum temperature that the support can be heated to without exerting any stress to the frame.
Ultimate strength, s,
Yield strength, s,
Percent
Material SAE no.
Condition
ksi
MPa
ksi
MPa
elongation
36
43
48
64
393
57
65
75
296
331
Annealed
1020
1020
448
517
36
20
Hot rolled
1020
Cold drawn
441
Annealed
Hot rolled
Cold drawn
75
90
97
517
621
669
51
60
352
414
565
30
25
16
1040
1040
1040
82
19
22
24
641
WQT 700
WQT 900
WQT 1100
WQT 1300
127
118
107
93
90
1040
876
1040
814
621
552
434
1040
738
80
1040
87
600
63
32
372
25
54
141
129
103
70
1080
Annealed
89
614
OQT 700
OQT 900
OQT 1100
OQT 1300
1303
1234
1000
972
889
710
483
12
13
17
189
179
1080
1080
1080
145
1080
117
807
23
352
26
Annealed
Cold drawn
600
772
51
95
1141
87
14
655
1186
1141
112
172
129
97
1331
οQT 700
OQT 900
OQT 1100
OQT 1300
193
146
1141
1007
800
648
889
669
15
20
1141
1141
116
1141
94
68
469
28
Annealed
60
414
26
655
1593
1289
1014
4140
4140
4140
95
231
1462
1193
903
12
15
212
OQT 700
OQT 900
OQT 1100
OQT 1300
173
187
147
4140
131
18
4140
118
814
101
696
23
724
40
238
Annealed
105
276
17
5160
5160
1641
9.
OQT 700
OQT 900
OQT I100
OQT 1300
263
196
149
115
1813
1351
1027
793
5160
179
1234
12
132
103
5160
910
17
5160
710
23
'Other propertics are approximately the same for all carbon and alloy steels:
Modulus of elasticity in tension = 30 000 000 psi (207 GPa).
Modulus of clasticity in shear = 11 500 00X0 psi (80 GPa).
Density 0.283 lb /in. (7680 kg/m').
OỌT means oil quenched and tempered. WQT means water quenched and tempered.
|台
Transcribed Image Text:Ultimate strength, s, Yield strength, s, Percent Material SAE no. Condition ksi MPa ksi MPa elongation 36 43 48 64 393 57 65 75 296 331 Annealed 1020 1020 448 517 36 20 Hot rolled 1020 Cold drawn 441 Annealed Hot rolled Cold drawn 75 90 97 517 621 669 51 60 352 414 565 30 25 16 1040 1040 1040 82 19 22 24 641 WQT 700 WQT 900 WQT 1100 WQT 1300 127 118 107 93 90 1040 876 1040 814 621 552 434 1040 738 80 1040 87 600 63 32 372 25 54 141 129 103 70 1080 Annealed 89 614 OQT 700 OQT 900 OQT 1100 OQT 1300 1303 1234 1000 972 889 710 483 12 13 17 189 179 1080 1080 1080 145 1080 117 807 23 352 26 Annealed Cold drawn 600 772 51 95 1141 87 14 655 1186 1141 112 172 129 97 1331 οQT 700 OQT 900 OQT 1100 OQT 1300 193 146 1141 1007 800 648 889 669 15 20 1141 1141 116 1141 94 68 469 28 Annealed 60 414 26 655 1593 1289 1014 4140 4140 4140 95 231 1462 1193 903 12 15 212 OQT 700 OQT 900 OQT 1100 OQT 1300 173 187 147 4140 131 18 4140 118 814 101 696 23 724 40 238 Annealed 105 276 17 5160 5160 1641 9. OQT 700 OQT 900 OQT I100 OQT 1300 263 196 149 115 1813 1351 1027 793 5160 179 1234 12 132 103 5160 910 17 5160 710 23 'Other propertics are approximately the same for all carbon and alloy steels: Modulus of elasticity in tension = 30 000 000 psi (207 GPa). Modulus of clasticity in shear = 11 500 00X0 psi (80 GPa). Density 0.283 lb /in. (7680 kg/m'). OỌT means oil quenched and tempered. WQT means water quenched and tempered. |台
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