TY - BOOK AU - Ibrahim Emad Eldin Ahmed Awad AU - Abdelrahman Ragab , AU - Chahinaz Abdelrahman Saleh , TI - Plastic instability of thin - walled clamped - clamped conical pipe reduces / PY - 2013/// CY - Cairo : PB - Ibrahim Emad Eldin Ahmed Awad , KW - Conical reducers KW - Instability pressure KW - Pressure vessels N1 - Thesis (M.Sc.) - Cairo University - Faculty of Engineering - Department of Mechanical Design and Production; Issued also as CD N2 - Flanged conical pipe reducer shells are studied . Due to the existence of this type of flanged connection local bending takes place at the assumed rigid locations that causes discontinuity local bending takes place at the assumed rigid locations that causes discontinuity stresses . Plastic instability pressure considered as burst pressure is obtained by the use of finite element method ER -