Condition #1: A structural support for a machine is subjected to a static compression load of 20 kN. The support is 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. Condition #2: The same structural support of the basie size determined in Condition I 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 Wi 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 mmi between the support and its frame. Initial length of the rod is 200 mm. Speeify the maximum temperature that the support can be heated to without exerting any stress to the frime.

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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Section: Chapter Questions
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Condition 3
A-10 Typical properties of carbon and alloy steels
Ultimate strength, s
Yield strength.s
Percent
elongation
Material SAE no.
Condition
ksi.
MPa
MPa
1020
1020
Annealed
Hot rolled
Cold drawn
57
65
75
393
448
96
331
43
36
48
1020
64
441
20
1040
1040
1040
1040
1040
1040
1040
Annealed
Hot rolled
Cold drawn
WOT 700
WOT 900
WOT LI00
WQT 1300
75
90
97
127
118
107
517
621
669
876
814
738
600
352
414
565
641
621
552
434
51
60
82
30
25
16
91
90
80
1080
1080
1080
1080
1080
Annealed
OQT 700
OQT 900
OQT 100
ÖOT 1300
189
179
145
117
614
1303
1234
1000
807
54
141
129
103
70
372
972
889
710
483
1141
Annealed
Cold drawn
OQT 700
600
352
655
186
889
26
1141
12,
193
146
116
772
1331
1007
800
95
172
129
97
14
1141
1141
OQT L100
OQT 1300
1141
669
20
1141
469
Annealed
OQT 700
OOT 900
OOT 1100
OOT 1300
4140
95
231
17
147
D18
655
1593
60
212
171
414
1462
1193
903
696
26
4140
4140
4140
4140
1289
1014
814
12
15
23
105
263
196
149
115
Oher propertie are approximately the same for all carbon
Modulus of clasticity in tension = 30 000 000 psi (207 GPa).
Modulus of elasticity in shear wIl 500 000 psi (80 GPa).
5160
5160
S160
5160
S160
Annealed
OQT 700
OQT 900
OOT I 100
724
1813
1351
1027
793
40
238
179
76
J641
1234
910
12
17
103
alky siecls
Deasity 0.253 th/a. (7680 kg/m'
OQT means ofl quenched and tempered. WOT mcans water quenched and tempered.
Transcribed Image Text:A-10 Typical properties of carbon and alloy steels Ultimate strength, s Yield strength.s Percent elongation Material SAE no. Condition ksi. MPa MPa 1020 1020 Annealed Hot rolled Cold drawn 57 65 75 393 448 96 331 43 36 48 1020 64 441 20 1040 1040 1040 1040 1040 1040 1040 Annealed Hot rolled Cold drawn WOT 700 WOT 900 WOT LI00 WQT 1300 75 90 97 127 118 107 517 621 669 876 814 738 600 352 414 565 641 621 552 434 51 60 82 30 25 16 91 90 80 1080 1080 1080 1080 1080 Annealed OQT 700 OQT 900 OQT 100 ÖOT 1300 189 179 145 117 614 1303 1234 1000 807 54 141 129 103 70 372 972 889 710 483 1141 Annealed Cold drawn OQT 700 600 352 655 186 889 26 1141 12, 193 146 116 772 1331 1007 800 95 172 129 97 14 1141 1141 OQT L100 OQT 1300 1141 669 20 1141 469 Annealed OQT 700 OOT 900 OOT 1100 OOT 1300 4140 95 231 17 147 D18 655 1593 60 212 171 414 1462 1193 903 696 26 4140 4140 4140 4140 1289 1014 814 12 15 23 105 263 196 149 115 Oher propertie are approximately the same for all carbon Modulus of clasticity in tension = 30 000 000 psi (207 GPa). Modulus of elasticity in shear wIl 500 000 psi (80 GPa). 5160 5160 S160 5160 S160 Annealed OQT 700 OQT 900 OOT I 100 724 1813 1351 1027 793 40 238 179 76 J641 1234 910 12 17 103 alky siecls Deasity 0.253 th/a. (7680 kg/m' OQT means ofl quenched and tempered. WOT mcans water quenched and tempered.
Condition #1:
A structural support for a machine is subjected to a static compression load of 20 kN. The support is
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.
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 W1 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 is 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. 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 W1 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.
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