Qestion-1: A 9/16 in UNF bolt is subjected to a load P = 60 kip in a tension joint as shown in Figure. The bolt is SAE grade 5 and lubricated. The initial bolt tension (F;) = 35 kip. The bolt and joint stiffnesses are k, = 6.5 and km 10.8 Mlbf/in Note: Use the related tables, formulas and concepts to answer following question (a) Formulate to determine the preload and service load stresses in the bolt. (b) Solve to find the torque necessary to develop the preload. (c) Identify if the bolt will fail or no under preload and service load stresses (Calculated in part a) by comparing with the SAE minimum proof strength of the bolt. (d) Can you identify; with given input data, tables and formulas that bolt is self-locking?
Qestion-1: A 9/16 in UNF bolt is subjected to a load P = 60 kip in a tension joint as shown in Figure. The bolt is SAE grade 5 and lubricated. The initial bolt tension (F;) = 35 kip. The bolt and joint stiffnesses are k, = 6.5 and km 10.8 Mlbf/in Note: Use the related tables, formulas and concepts to answer following question (a) Formulate to determine the preload and service load stresses in the bolt. (b) Solve to find the torque necessary to develop the preload. (c) Identify if the bolt will fail or no under preload and service load stresses (Calculated in part a) by comparing with the SAE minimum proof strength of the bolt. (d) Can you identify; with given input data, tables and formulas that bolt is self-locking?
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
Related questions
Question
![Qestion-1: A 9/16 in UNF bolt is subjected to a load P = 60 kip in a tension joint as shown in
Figure.
The bolt is SAE grade 5 and lubricated. The initial bolt tension (F) = 35 kip.
The bolt and joint stiffnesses are k, = 6.5 and km 10.8 Mlbf/in
Note: Use the related tables, formulas and concepts to answer following question
(a) Formulate to determine the preload and service load stresses in the bolt.
(b) Solve to find the torque necessary to develop the preload.
(c) Identify if the bolt will fail or no under preload and service load stresses
(Calculated in part a) by comparing with the SAE minimum proof strength of the bolt.
(d) Can you identify; with given input data, tables and formulas that bolt is self-locking?
Table 8-9
SAE Specifications for Steel Bolts
Size
SAE
Range
Grade Inclusive,
No.
in
+14
1
2
4
5
5.2
7
8
TI I
LI
I
I
I
+-14
8.2 -1
Minimum
Proof
Strength,"
kpsi
33
55
33
65
85
74
85
105
120
120
Table 8-2
Diameters and Area of Unified Screw Threads
Size
Designation
0
1
2
3
4
5
6
8
10
12
Nominal
Major
Diameter
In
0.0600
0.0730
0.0860
0.0990
0.1120
0.1250
0.1380
0.1640
0.1900
0.2160
0.2500
0.3125
0.3750
0.4375
0.5000
0.5625
0.6250
0.7500
0.8750
1.0000
1.2500
1.5000
Fine Series-UNF
Tensile
Stross
Area A
In²
0.001 80
0.002 78
0.00394
0.005 23
0.006 61
0.008 80
0.010 15
0.014 74
0.0200
0.025 8
0.0364
0.058 0
0.0878
0.1187
0.1599
0.203
0.256
0.373
0.509
0.663
1.073
1.581](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F6d83d8f2-5b5a-4682-a7e1-2c357e6f86d4%2Fb1fcb8de-0b6d-41cc-a8b3-e88b3b543678%2Fc811fl9_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Qestion-1: A 9/16 in UNF bolt is subjected to a load P = 60 kip in a tension joint as shown in
Figure.
The bolt is SAE grade 5 and lubricated. The initial bolt tension (F) = 35 kip.
The bolt and joint stiffnesses are k, = 6.5 and km 10.8 Mlbf/in
Note: Use the related tables, formulas and concepts to answer following question
(a) Formulate to determine the preload and service load stresses in the bolt.
(b) Solve to find the torque necessary to develop the preload.
(c) Identify if the bolt will fail or no under preload and service load stresses
(Calculated in part a) by comparing with the SAE minimum proof strength of the bolt.
(d) Can you identify; with given input data, tables and formulas that bolt is self-locking?
Table 8-9
SAE Specifications for Steel Bolts
Size
SAE
Range
Grade Inclusive,
No.
in
+14
1
2
4
5
5.2
7
8
TI I
LI
I
I
I
+-14
8.2 -1
Minimum
Proof
Strength,"
kpsi
33
55
33
65
85
74
85
105
120
120
Table 8-2
Diameters and Area of Unified Screw Threads
Size
Designation
0
1
2
3
4
5
6
8
10
12
Nominal
Major
Diameter
In
0.0600
0.0730
0.0860
0.0990
0.1120
0.1250
0.1380
0.1640
0.1900
0.2160
0.2500
0.3125
0.3750
0.4375
0.5000
0.5625
0.6250
0.7500
0.8750
1.0000
1.2500
1.5000
Fine Series-UNF
Tensile
Stross
Area A
In²
0.001 80
0.002 78
0.00394
0.005 23
0.006 61
0.008 80
0.010 15
0.014 74
0.0200
0.025 8
0.0364
0.058 0
0.0878
0.1187
0.1599
0.203
0.256
0.373
0.509
0.663
1.073
1.581
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