Torispherical drumheads: A limit-pressure and shakedown investigation

Abstract Following elastic tests, which have been described in detail elsewhere, further work has been carried out in the plastic range on four full-size mild-steel torispherical drumheads subjected to internal pressure. The work is presented here in two parts. Part 1 contains a review of some previous theoretical numerical and experimental work related to the present study, an account of the test installation and procedure, and a presentation of the complete test results. Data on the initiation and propagation of yield are also included. In Part 2 the variations in maximum head strain and head height with increasing pressure are compared with computer predictions from an existing C.E.G.B. programme; there are some inconsistencies between the numerical and experimental data and the relevant factors are considered in detail. The observed limit pressures and maximum shakedown pressures are compared with independent alternative values from several different sources and the implications of the experimental results in relation to design are discussed.

[1]  P V Marcal,et al.  A stiffness method for elastic-plastic shells of revolution , 1966 .

[2]  S. S. Manson,et al.  Practical solution of plastic deformation problems in elastic-plastic range , 1957 .

[3]  P. V. Marcal,et al.  Numerical Analysis of the Elastic-Plastic Behaviour of Axisymmetrically Loaded Shells of Revolution , 1963 .

[4]  P. V. Marcal,et al.  Elastic Solution in the Limit Analysis of Shells of Revolution with Special Reference to Expansion Bellows , 1961 .

[5]  D. Slater,et al.  Pressure Vessels of High Proof Strength Warm Worked Stainless Steel , 1966 .

[6]  D G Moffat,et al.  Elastic stresses in torispherical drumheads: Experimental verification , 1968 .

[7]  P. Marcal.  A stiffness method for elastic-plastic problems , 1965 .

[8]  H Fessler,et al.  Stresses in torispherical drumheads: A critical evaluation , 1966 .

[9]  H Fessler,et al.  A compilation of problems and needs in the analysis, design, and manufacture of pressure vessels , 1967 .

[10]  David A. Spera.  ANALYSIS OF ELASTIC-PLASTIC SHELLS OF REVOLUTION CONTAINING DISCONTINUITIES , 1963 .

[11]  E. Procter,et al.  Experimental investigation into the elastic/plastic behaviour of isolated nozzles in spherical shells. Part II. Shakedown and plastic analysis. , 1968 .

[12]  F. A. Leckie,et al.  Some Observations on the Design of Spherical Pressure Vessels with Flush Cylindrical Nozzles , 1965 .

[13]  F. A. Leckie.  Shakedown Pressures for Flush Cylinder-Sphere Shell Intersections , 1965 .

[14]  D. C. Drucker,et al.  DESIGN OF THIN-WALLED TORISPHERICAL AND TORICONICAL PRESSURE VESSEL HEADS , 1961 .

[15]  H Fessler,et al.  Stresses in torispherical drumheads: A photoelastic investigation , 1965 .