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Stress Concentration Stress Intensity And Fatigue Lifetime Calculations In Autofrettaged Tubes Containing Axial Perforations Within The Wall
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Book Synopsis Stress Concentration, Stress Intensity, and Fatigue Lifetime Calculations in Autofrettaged Tubes Containing Axial Perforations Within the Wall by :
Download or read book Stress Concentration, Stress Intensity, and Fatigue Lifetime Calculations in Autofrettaged Tubes Containing Axial Perforations Within the Wall written by and published by . This book was released on 1997 with total page 21 pages. Available in PDF, EPUB and Kindle. Book excerpt: Elastic, elastic-plastic, and experimental stress analyses and fatigue lifetime predictions are presented for thick cylinders containing multiple, axial holes within the wall. The holes are generally semi-elliptical (including semi-circular) and the cylinders are autofrettaged after introduction of the holes and are subsequently subjected to cyclic pressurization of the bore. Two potentially critical failure locations are identified; a fracture-mechanics based design methodology is proposed; elastic and elastic-plastic finite element (FE) analyses are undertaken. The elastic FE analysis predicts hoop stresses at the bore resulting from internal pressurization which are some 7% higher than those for the equivalent plain tube. For a given hole size and location and for nominal overstrains of 40% or greater, the residual compressive stress at the bore is reduced by approximately 15% below the value for a plain tube of the same radius ratio. Two experimental investigations are reported, one based upon X-ray diffraction, to measure residual stresses, and the other based upon radial tube slitting, to measure opening angle. They confirm most features of the residual stress profiles predicted from FE analysis, with the exception of high compressive residual stresses and stress gradients immediately adjacent to the hole boundaries. Appropriate use of the residual stress information permits prediction of tube lifetimes for cracks emanating from the bore and from the hole. For the geometry and loading under consideration, the more critical location is predicted to be the hole boundary, the lifetime for failures originating from this point being some 60% of the lifetime for cracks originating at the bore.
Book Synopsis Stress Concentration, Stress Intensity, and Fatigue Lifetime Calculations for Shrink-Fit Compound Tubes Containing Axial Perforations Within the Wall by :
Download or read book Stress Concentration, Stress Intensity, and Fatigue Lifetime Calculations for Shrink-Fit Compound Tubes Containing Axial Perforations Within the Wall written by and published by . This book was released on 1996 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt: Elastic-plastic numerical stress analyses and fatigue lifetime predictions are presented for shrink-fit compound tubes containing multiple, axial holes at the interface between inner and outer tube. The holes, which are semicircular, are introduced initially as periodic notches on the outer surface of the inner tube and an outer plain tube is heated, slid over the inner tube, and allowed to cool to achieve the shrink-fit. Residual stresses resulting from interference and operational stress ranges arising from cyclic bere pressurization are calculated and fatigue lifetimes are predicted. Two potentially critical locations for fatigue failure are identified as the bere and the notch root. The predicted lifetimes are compared with earlier work on a similar overall geometry subjected to autofrettage. The critical location is shown to be at the bere and a clear improvement in overall fatigue lifetime is demonstrated for the shrink-fit tube compared with the autofrettaged tube. As the interface radius is reduced, there is a general reduction in the ratio of fatigue stress range at the bere to that at the hole and the possibility of the critical location moving to the notch root. A normalized presentation for design purposes is proposed.
Book Synopsis Stress Concentration, Stress Intensity and Fatigue Lifetime Calculations for Shrink-Fit Compound Tubes Containing Axial Holes Within the Wall by : TJ. Bond
Download or read book Stress Concentration, Stress Intensity and Fatigue Lifetime Calculations for Shrink-Fit Compound Tubes Containing Axial Holes Within the Wall written by TJ. Bond and published by . This book was released on 1997 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: Elastic-plastic numerical stress analyses and fatigue lifetime predictions are presented for shrink-fit compound tubes containing multiple, axial holes at the interface between inner and outer tube. The holes, which are semi-circular, are introduced initially as periodic notches on the outer surface of the inner tube and an outer plain tube is heated, slid over the inner tube and allowed to cool to achieve the shrink-fit. Residual stresses resulting from interference and operational stress ranges arising from cyclic bore pressurization are calculated and fatigue lifetimes are predicted. Two potentially critical locations for fatigue failure are identified as the bore and the notch root. The predicted lifetimes are compared with earlier work on a similar overall geometry subjected to autofrettage. The critical location is shown to be at the bore and a clear improvement in overall fatigue lifetime is demonstrated for the shrink-fit tube compared with the autofrettaged tube. As the interface radius is reduced, there is a general reduction in the ratio of fatigue stress range at the bore to that at the hole and the possibility of the critical location moving to the notch root. A normalized presentation for design purposes is proposed.
Book Synopsis Fatigue and Fracture Mechanics by : John H. Underwood
Download or read book Fatigue and Fracture Mechanics written by John H. Underwood and published by ASTM International. This book was released on 1997 with total page 697 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Applied Mechanics and Mechanical Engineering III by : Xiong Zhou
Download or read book Applied Mechanics and Mechanical Engineering III written by Xiong Zhou and published by Trans Tech Publications Ltd. This book was released on 2012-12-13 with total page 1400 pages. Available in PDF, EPUB and Kindle. Book excerpt: The collection includes selected, peer-reviewed papers from the 2012 3rd International Conference on Applied Mechanics and Mechanical Engineering (ICAMME 2012) held in November 14-15, 2012 in Macau. The 226 peer reviewed papers are grouped into the following chapters: Chapter 1: Applied Mechanics and Measurement Technology of Detection and Monitoring, Chapter 2: Mechanical Engineering, Manufacturing Technology and Application, Chapter 3: Advanced Materials Science and Engineering, Chapter 4: Rock, Civil and Structural Engineering, Chapter 5: Control, Electronic, Automation Technology and Communication Engineering, Chapter 6: Biomechanics Technology.
Book Synopsis Service Experience and Design in Pressure Vessels and Piping (including High Pressure Technology) by : Warren H. Bamford
Download or read book Service Experience and Design in Pressure Vessels and Piping (including High Pressure Technology) written by Warren H. Bamford and published by . This book was released on 1996 with total page 278 pages. Available in PDF, EPUB and Kindle. Book excerpt: The themes are the issues and degradation that result from the operation of nuclear and fossil power plants, as well as related information on high temperature structural materials. Papers from a symposium of the July 1996 conference are grouped in four sessions on service experience in nuclear plan
Book Synopsis Nordstjernen. Romaner og Noveller for Land og By, 1-4 by :
Download or read book Nordstjernen. Romaner og Noveller for Land og By, 1-4 written by and published by . This book was released on 1915 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Applied Mechanics Reviews written by and published by . This book was released on 1997 with total page 816 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Download or read book Metals Abstracts written by and published by . This book was released on 1998 with total page 1076 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Fatigue Life Measurements and Analysis for Overstrained Tubes with Evacuator Holes by :
Download or read book Fatigue Life Measurements and Analysis for Overstrained Tubes with Evacuator Holes written by and published by . This book was released on 1995 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sections of cannon tubes with inner radius of 53, 60, and 78 mm were cycled from near zero to 100 to 300 MPa internal pressure until fatigue failure occurred. The failure locations were along 2-mm holes cut through the cannon wall at a 30 deg angle to the tube axis, for the purpose of evacuating combustion gases from the cannon after firing. The cannons had various amount of autofrettage by overstraining including 0, 30, 50, and 100 percent. The amount of overstrain affected both the initiation position of the fatigue crack along the evacuator hole and the measured fatigue life. Increasing the amount of overstrain moved the crack initiation from the tube inner radius toward a mid- wall position and significantly increased fatigue life. Fracture mechanics and solid mechanics-based calculations of fatigue life were performed for comparison with the measured lives. The calculations gave a good description of the measured life, taking account of tube configuration, applied pressure, amount of overstrain, stress concentration of the hole. Crack size and shape, material fatigue crack rate behavior and yield strength, and pressure in the hole and on the crack surfaces. As with measured fatigue life, the calculated life was significantly affected by the amount of autofrettage of the tube. The ratio of outer-to-inner radius of the tube and the presence of pressure in the evacuator hole also had substantial effects on the calculated fatigue life. (MM).
Book Synopsis Plant Systems/components Aging Management, 1995 by : I. T. Kisisel
Download or read book Plant Systems/components Aging Management, 1995 written by I. T. Kisisel and published by . This book was released on 1995 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Plant Systems/components Aging Management by :
Download or read book Plant Systems/components Aging Management written by and published by . This book was released on 1995 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Stress Intensity Factors Caused by Residual Stress Fields in Autofrettaged Tubing by : A. Stacey
Download or read book Stress Intensity Factors Caused by Residual Stress Fields in Autofrettaged Tubing written by A. Stacey and published by . This book was released on 1988 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt: The influence of residual stress distributions on the stress intensity factors developed in thick-walled cylinders containing line cracks is quantified. A stress intensity factor caused by the residual stress field, Kres, is evaluated using the superposition principle. This can then be superposed on the stress intensity factor associated with the applied loading to give an effective stress intensity factor controlling crack growth.
Book Synopsis A Stress Analysis Method for Fatigue Life Prediction of Welded Structures by : Rakesh Kumar Goyal
Download or read book A Stress Analysis Method for Fatigue Life Prediction of Welded Structures written by Rakesh Kumar Goyal and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Fatigue Thresholds by : Jan Bäcklund
Download or read book Fatigue Thresholds written by Jan Bäcklund and published by . This book was released on 1982 with total page 596 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Proceedings, of the Society for Experimental Stress Analysis by : Society for Experimental Stress Analysis
Download or read book Proceedings, of the Society for Experimental Stress Analysis written by Society for Experimental Stress Analysis and published by . This book was released on 1945 with total page 206 pages. Available in PDF, EPUB and Kindle. Book excerpt: Vol. 1, no. 1 contains Proceedings of the 17th (or the last) Eastern Photoelasticity Conference.
