a) For a bolted assembly with ten bolts, the stafiness of each bolt is ka= 10 MN/m and the stiffness of the members is ku 26 MN/mm per bolt. The joint is subject to occasional disassembly for maistenance and should be preloaded accordingly Assume the external Inad is equally distributed to all the belts. IR has been determined to use Mo 1 cdass 58 bolts with rulled threads. (a) Determine the manimum external load Paa that can be applied to the entire joint without exceeding the proof strength of the boits (b) Determine the maximum esternal lad Pan that can be applied ta the entire joint without causing the members te come out of compression b) A holding fisture for a workpiece 375 mm thick at the clamp locations is being designed. The detail of ane of the clamps in shown in the figure (Problem 10-2. A spring is eequired to drive the clamp upward when removing theworkpiece with a starting force of 65 N. The clamp screw has an M10 - 125 thread. Allow a diametral clearance of 1.25 mm between it and the uncompressed spring it is further specified that the free length of the spring should be Las 48 mm, the solid height La s 31.5 mm, and the safety factor when dosed selid should be n.a 12 Starting with d-2 mm, design a suitable helical coll compression spring for this fixture. Wire diameters are available in 0.2-mm increments hetween 02 to 32 mm.
a) For a bolted assembly with ten bolts, the stafiness of each bolt is ka= 10 MN/m and the stiffness of the members is ku 26 MN/mm per bolt. The joint is subject to occasional disassembly for maistenance and should be preloaded accordingly Assume the external Inad is equally distributed to all the belts. IR has been determined to use Mo 1 cdass 58 bolts with rulled threads. (a) Determine the manimum external load Paa that can be applied to the entire joint without exceeding the proof strength of the boits (b) Determine the maximum esternal lad Pan that can be applied ta the entire joint without causing the members te come out of compression b) A holding fisture for a workpiece 375 mm thick at the clamp locations is being designed. The detail of ane of the clamps in shown in the figure (Problem 10-2. A spring is eequired to drive the clamp upward when removing theworkpiece with a starting force of 65 N. The clamp screw has an M10 - 125 thread. Allow a diametral clearance of 1.25 mm between it and the uncompressed spring it is further specified that the free length of the spring should be Las 48 mm, the solid height La s 31.5 mm, and the safety factor when dosed selid should be n.a 12 Starting with d-2 mm, design a suitable helical coll compression spring for this fixture. Wire diameters are available in 0.2-mm increments hetween 02 to 32 mm.
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
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Transcribed Image Text:Question two
a) For a bolted assembly with ten bolts, the stiffness of each bolt is a= 10 MN/
and the stiffness of the members is ku 26 MN/mm per bolt. The joint is subject
to occasional disassembly for maintenance and should be preloaded accordingly.
Assume the external load is equally distributed to all the bolts. IR has been
determined to use M6 1 dass S8 bolts with rolled threads.
(a) Determine the maximum external load Paa that can be applied to the entire
joint without exceeding the proof strength of the boits.
(b) Determine the maximum esternal load Pn that can be applied ta the entire
joint without causing the members te come out of compression
b) A holding fixture for a workpiece 37.5 mm thick at the clamp locations is being
designed. The detailof ane of the clamps is shown in the figure (Problem 10-2).
A spring is required to drive the clamp upward when removing the workpiece
with a starting force of 65 N. The clamp screw has an M10 - 125 thread. Allowa
diametral clearance of 1.25 mm between it and the uncompressed spring it is
farther specified that the free length of the spring should be Las 48 mm, the
solid height La s 315 mm, and the safety factor when desed selid should be na
12 Starting with d 2 mm, design a suitable helical coll compression spring for
this fisture. Wire diameters are available in 0.2-mm increments hetween 02 to
12 mm.
Spealt
Probiem 10-23
Warigi
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