Question

16-MEC-B1 May 2018 Problem 5. The figure below illustrates the connection of a steel cylinder head to a steel pressure vessel using 10 bolts and a confined-gasket seal. The effective sealing diameter is 150 mm. The other dimensions are: A = 100 mm, B= 200 mm, C= 300 mm, D= 20 mm and E = 25 mm. The pressure vessel is used to store gas at a static pressure of 6 MPa. Metric 12 mm diameter bolts are to be used as they give a reasonable bolt spacing. The factor of safety for separation is to be at least 1.5 and the factor of safety for yielding is to be at least 2. Determine the required bolt preload and select a suitable grade of bolt. (20 marks)

          16-MEC-B1 May 2018
Problem 5. The figure below illustrates the connection of a steel cylinder head to a steel pressure
vessel using 10 bolts and a confined-gasket seal. The effective sealing diameter is 150 mm. The
other dimensions are: A = 100 mm, B= 200 mm, C= 300 mm, D= 20 mm and E = 25 mm. The
pressure vessel is used to store gas at a static pressure of 6 MPa. Metric 12 mm diameter bolts
are to be used as they give a reasonable bolt spacing. The factor of safety for separation is to be
at least 1.5 and the factor of safety for yielding is to be at least 2. Determine the required bolt
preload and select a suitable grade of bolt.
(20 marks)

16-MEC-B1 May 2018
Problem 5. The figure below illustrates the connection of a steel cylinder head to a steel pressure
vessel using 10 bolts and a confined-gasket seal. The effective sealing diameter is 150 mm. The
other dimensions are: A = 100 mm, B= 200 mm, C= 300 mm, D= 20 mm and E = 25 mm. The
pressure vessel is used to store gas at a static pressure of 6 MPa. Metric 12 mm diameter bolts
are to be used as they give a reasonable bolt spacing. The factor of safety for separation is to be
at least 1.5 and the factor of safety for yielding is to be at least 2. Determine the required bolt
preload and select a suitable grade of bolt.
(20 marks)

Added by Steven S.

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