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Mechanical Engineering

how many 15 mm holes will be required to keep the cover plate in position?

Mechanics of Materials (MindTap Course List)

9th Edition

ISBN:9781337093347

Author:Barry J. Goodno, James M. Gere

Publisher:Barry J. Goodno, James M. Gere

Chapter1: Tension, Compression, And Shear

Section: Chapter Questions

Problem 1.10.11P: A pressurized circular cylinder has a sealed cover plate fastened with steel bolts (see figure). The...

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Concept explainers

Pressure Vessels

The term pressure vessel refers to a closed container that contains gas or liquid at a different pressure than environment pressure. The pressure vessels have a wide scale of applications in our day-to-day lives and other industrial places. Some common examples of pressure vessels are gas cylinders, autoclaves, compressor vessels, etc.

Question

A steam boiler is to have a 300 mm diameter hand placed hole on one end. If the
maximum internal pressure is 1.3 MPa, how many 15 mm holes will be required to keep
the cover plate in position? The root diameter of a 15 mm bolt is 12 mm. The allowable
tensile stress in the bolts is 100 MPa and the initial stress in the bolts when they are
tightened is 600 MPa.

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