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Book Dynamic Buckling of Shell Structures Subject to Longitudinal Impact

Download or read book Dynamic Buckling of Shell Structures Subject to Longitudinal Impact written by A. P. Coppa and published by . This book was released on 1962 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt: Investigations dealing with the buckling of thin cylindrical and conical shells subject to axial impact are described. The studies consisted of experimental and theoretical efforts directed toward obtaing a qualitative and quantitative understanding of the dynamic buckling behavior of such shells under a variety of conditions. The conditions studied include different longitudinal conditions imposed on the impacted end of the shell and internal pressurization. In addition, methods of increasing the specific energy dissipation capacity of shells subject to axial impact were studied. A number of interesting results were obtained. It was demonstrated experimentally that buckling of a cylindrical shell is initiated during the first passage of the axial compression stress wave due to the initial impact when the impact velocity is sufficiently high. Another significant experimental result obtained is that the asymmetrical (quasi-developable) form of shell buckling occurs as a result of a smooth transition from the symmetrical ("ring") form of bucklingin some thin cylindrical shells subjected to an axially symmetric axial impact. Analytical subject to a constant velocity end displacement. The method utilizes the finite deflection theory and is a refinement of the procedure due to A.S. Volmir. It shows that both the upper critical stress and the number of circumferential waves increase and the time to initiate buckling decreases with increasing velocity of impact. These trends are in agreement with the analytical results of Volmir and a phenomenological theory due to Coppa.

Book Experimental Investigation of the Buckling of Clamped Oval Cylindrical Shells Under Axial Compression

Download or read book Experimental Investigation of the Buckling of Clamped Oval Cylindrical Shells Under Axial Compression written by George Feinstein and published by . This book was released on 1970 with total page 37 pages. Available in PDF, EPUB and Kindle. Book excerpt: Elastic buckling under axial compression of finite, oval cylindrical shells with clamped boundaries was investigated experimentally. The determination of the buckling strength was made on a series of oval shells made of Mylar A. The test results indicated that the discrepancy between theoretical and experimental initial buckling loads for the ovals is similar to that of the circular cylindrical shells. However, in contrast to the circular case, a collapse load significantly exceeding the initial buckling load is observed in the case of ovals with moderate-to-large eccentricity. (Author).

Book An Experimental Investigation of the Buckling of Circular Cylindrical Shells in Axial Compression Using the Photoelastic Technique

Download or read book An Experimental Investigation of the Buckling of Circular Cylindrical Shells in Axial Compression Using the Photoelastic Technique written by Roderick Clarence Tennyson and published by . This book was released on 1964 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book An Experimental Investigation of the Effect of Circular Cutouts on the Buckling Strength of Circular Cylindrical Shells Loaded in Axial Compression

Download or read book An Experimental Investigation of the Effect of Circular Cutouts on the Buckling Strength of Circular Cylindrical Shells Loaded in Axial Compression written by Richard Eugene Snyder and published by . This book was released on 1965 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Numerical and Experimental Study of the Compression Response of Composite Cylindrical Shells with Cutouts

Download or read book Numerical and Experimental Study of the Compression Response of Composite Cylindrical Shells with Cutouts written by Mark William Hilburger and published by . This book was released on 1998 with total page 718 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Dynamic Pulse Buckling of Cylindrical Shells

Download or read book Dynamic Pulse Buckling of Cylindrical Shells written by Herbert E. Lindberg and published by . This book was released on 1970 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Dynamic Buckling of Composite Shells

Download or read book Dynamic Buckling of Composite Shells written by Edgars Eglitis and published by LAP Lambert Academic Publishing. This book was released on 2011-03 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis is focused on the investigation of the changes in the buckling behaviour of various composite shells due to dynamic, rapid loading. Currently, the structural design procedures of lightweight structures incorporate assumption of the loads as quasistatic, while maintaining reliability by applying conservative safety coefficients. Different investigations show that in various cases of dynamic loading the buckling loads can be both higher and lower than the static buckling load. Therefore, correct consideration of the load dynamics in the design procedure would lead to safer and more efficient structures. A reliable, experimentally validated analysis approach is required in order to benefit from the weight-saving potential of dynamically loaded composite structures, while maintaining the reliability. However, only few experimental investigations on dynamic buckling of composite structures have been performed because of the complexity of such experiments. In present thesis, the dynamic buckling of composite shells has been investigated experimentally and numerically, and an appropriate experimentally validated modelling approach has been proposed.

Book Buckling Experiments  Experimental Methods in Buckling of Thin Walled Structures  Volume 2

Download or read book Buckling Experiments Experimental Methods in Buckling of Thin Walled Structures Volume 2 written by Josef Singer and published by John Wiley & Sons. This book was released on 2002-08-12 with total page 1140 pages. Available in PDF, EPUB and Kindle. Book excerpt: * Edited by Josef Singer, the world's foremost authority on structural buckling. * Time-saving and cost-effective design data for all structural, mechanical, and aerospace engineering researchers.

Book Dynamic Buckling of Shell Structures Subject to Longitudinal Impact

Download or read book Dynamic Buckling of Shell Structures Subject to Longitudinal Impact written by Anthony P. Coppa and published by . This book was released on 1964 with total page 237 pages. Available in PDF, EPUB and Kindle. Book excerpt: Experimental and theoretical studies of the buckling and collapse of circular cylindrical and conical shells under longitudinal impact are described. Various conditions of loading were investigated such as impact with rigid, fluid, and granular media, and such effects as initial geometrical imperfections, edge support, and loading asymmetry were included. In addition, the effect of axial impact at velocities up to 391 ft/sec on the buckling of thin cylindrical shells was studied experimentally. Finally, three problems, relating to the experiments were studied theoretically: (1) the dynamic buckling of a circular cylindrical shell subject to an exial loading which varies linearly with time, using the nonlinear theory, (2) dynamic buckling of a circular cylindrical shell subject to a constant velocity end displacement, including the effects of plasticity and incorporating extremely large deflections, and (3) the inextensional shortening and collapse modes of conical shells for the complete range of end shortening.

Book Effects of Internal Pressure Upon the Buckling of Thin Circular Cylindrical Shells Under Axial Compression

Download or read book Effects of Internal Pressure Upon the Buckling of Thin Circular Cylindrical Shells Under Axial Compression written by LeRoy Earl Thompson and published by . This book was released on 1965 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt: "An experimental investigation was made of the effects of internal pressure upon the buckling of thin circular cylindrical shells under axial compression. A comparison was made of the experimental and theoretical results; the latter were derived from the large-deflection theory. Results showed that the internal pressure had an appreciable strengthening effect upon the buckling of the cylindrical shell. The comparison showed that the experimental results were lower than the theoretical results for a given internal pressure. The discrepancy between the results can be expected since there were factors not included in the theory: imperfections, end conditions, lengths, and material irregularities"--Abstract, leaf ii.

Book NASA Technical Note

    Book Details:
  • Author :
  • Publisher :
  • Release : 1962
  • ISBN :
  • Pages : 1094 pages

Download or read book NASA Technical Note written by and published by . This book was released on 1962 with total page 1094 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Experimental Study of the Creep Buckling of Circular Cylindrical Shells Under an Axially Applied Compression

Download or read book Experimental Study of the Creep Buckling of Circular Cylindrical Shells Under an Axially Applied Compression written by Stanford University. Department of Aeronautics and Astronautics and published by . This book was released on 1965 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt: The use of electroforming to produce circular cylindrical shells is described. Examples are cited for which the use of electroforming provides opportunities for the development of unique specimen designs and test procedures. The use of a tapered creep specimen to generate isochronous stress-strain curves is described. The procedure developed provides a method for deriving basic creep relationships form data obtained from a small number of tests. The results of creep buckling tests on circular cylindrical shells under axial compression are presented. The basic features described are the end-shortening history, the variation of buckling load with time, and the post-buckling pattern which is developed. (Author).