Download or read book Development of a Projectile Penetration Theory written by Robert S. Bernard and published by . This book was released on 1975 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Development of a Projectile Penetration Theory written by Robert S. Bernard and published by . This book was released on 1976 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Development of a Projectile Penetration Theory Report 2 Deep Penetration Theory for Homogeneous and Layered Targets written by and published by . This book was released on 1976 with total page 75 pages. Available in PDF, EPUB and Kindle. Book excerpt: Existing shallow penetration theory (which is based on cavity expansion theory) is modified and extended for application to deep penetration in homogeneous and layered targets. This is accomplished by means of a postulated relation between the target penetration resistance and the so-called 'solid Reynolds number.' The predictions of the modified theory are shown to be in approximate agreement with experimental, empirical, and two-dimensional finite-difference results for shallow as well as deep penetration in metal, rock, concrete, and cohesive soil targets.
Download or read book Development of a Projectile Penetration Theory Report 1 Penetration Theory for Shallow to Moderate Depths written by Robert S. Bernard and published by . This book was released on 1975 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Previous work in penetration theory, based on the theory for dynamic expansion of a spherical cavity in a compressible strain-hardening medium, is extended to include the effects of nose shape, layered targets, and oblique impact. Parametric implications of the theory are investigated, and governing parameters are defined. Theoretical results are compared with experimental and empirical results and with two-dimensional finite-difference solutions; good agreement is obtained when the penetration resistance of the target due to shear is comparable with that due to inertia.
Download or read book Development of a Projectile Penetration Theory written by Robert S. Bernard and published by . This book was released on 1975 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Projectile Penetration Theory for Layered Targets written by and published by . This book was released on 1976 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt: Projectile penetration was studied. Empirical equations describing the axial force which opposes the motion of a rigid projectile as it passes through a deformable solid target were developed. Experimental data consisting of impact velocity and final depth of penetration were used to estimate the coefficients in the relation between axial force and projectile velocity. However, these coefficients were not specified in terms of standard material properties, and so they were applicable only for the particular targets for which they were determined. In the present work, the quasistatic expansion of a spherical cavity in a concentrically layered medium will be analyzed in order to obtain an approximation for the radial stress at the surface of a slowly expanding spherical cavity in a vertically layered medium with a plane interface. This approximation will then be used to construct a simple equation of motion for a rigid cylindrical projectile (with a conical or ogival nose shape) which penetrates a layered target.
Download or read book Penetration Theory Separable Force Laws and the Time of Penetration written by Richard A. Beth and published by . This book was released on 1945 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: The equation of motion of a penetrating projectile can be integrated the force law depends only on the depth of penetration x and the velocity and has either of the two general forms: R = c . g(x) . f(v) or R = a(x) v(exp 2) lambda + b(x)v(exp 2), both of which include as special cases the classical sectional-pressure theories of penetration. The second of these has been discussed in a previous report. The present report summarizes the separable force laws represented by the first.
Download or read book Projectile Penetration Theory written by and published by . This book was released on 2013 with total page 518 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Analysis of Projectile Penetration Into Concrete and Rock Targets written by Behzad Rohani and published by . This book was released on 1975 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book List of Publications of the U S Army Engineers Waterway Experiment Station written by United States. Army. Corps of Engineers and published by . This book was released on 1976 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book List of Publications of the U S Army Engineer Waterways Experiment Station written by U.S. Army Engineer Waterways Experiment Station and published by . This book was released on 1976 with total page 430 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book California Court of Appeal 2nd Appellate District Records and Briefs written by California (State). and published by . This book was released on with total page 610 pages. Available in PDF, EPUB and Kindle. Book excerpt: Received document entitled: APPENDIX TO PETITION FOR WRIT
Download or read book Structures Under Shock and Impact XV written by S. Syngellakis and published by WIT Press. This book was released on 2018-10-23 with total page 299 pages. Available in PDF, EPUB and Kindle. Book excerpt: Discussing the increasing need to protect civilian infrastructure and industrial facilities against unintentional loads arising from accidental impact and explosion events as well as terrorist attack, this book contains papers presented at the 15th International Conference on Structures under Shock and Impact. This successful conference series has been regularly held since it began in 1989 in Cambridge, Massachusetts. While advances have been made over this period many challenges remain, such as to develop more effective and efficient blast and impact mitigation approaches than currently exist. The primary focus remains the survivability of physical facilities and the protection of people, as well as reducing economic losses and impact on the environment, with emphasis on innovative protective technologies to support the needs of an economically growing, modern society. The application of this technology ranges from the safe transportation of people in several modes and the transportation of dangerous or combustible materials to defences against natural hazard threats such as flood, wind, storm, tsunami and earthquake. Large scale testing is prohibitive and small scale laboratory testing results in scaling uncertainties. Continuing research is therefore essential to improve knowledge on how these structures behave under a variety of load actions, some of which interact making it even more complex and difficult to define. Consequently, more use of advanced numerical simulations for load and structural response calculations is common practice in industry and research. Such calculations can directly be used in design and risk assessment calculations, but also be applied as input to more simplified design tools and design codes. Whether numerical or analytical modelling techniques are employed, experimental validation is vital for there to be acceptance of the approach to be used. The published research aims for the exchange of ideas and results to promote a better understanding of the critical issues relating to the testing behaviour, modelling and analyses of protective structures against blast and impact loading.
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1992 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Shock and Vibration Bulletin written by and published by . This book was released on 1977-09 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ballistics 2011 written by Ernest Baker and published by DEStech Publications, Inc. This book was released on 2011-09 with total page 2230 pages. Available in PDF, EPUB and Kindle. Book excerpt: Includes papers that were first presented at a September 2011 conference organized by the National Defense Industrial Association and the International Ballistics Society. This title includes a CD-ROM that displays figures and illustrations in articles in full color along with a title screen and main menu screen.
Download or read book A Trailing camera Technique for Studying Projectile Penetration Into Earth Materials written by J. L. Colp and published by . This book was released on 1968 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: A technique has been developed for photographing, from above and behind the vehicle, the impact and penetration of a projectile into earth materials. Two drop tests were conducted. The projectiles used were 172 inches long, 9 inches in diameter, and weighed 1050 and 1160 pounds. A high-speed, ruggedized 16-mm movie camera, attached behind the projectile by a 50-foot line and retarded by a stabilizing parachute 2-1/16 feet in diameter, was used to photograph vehicle penetration. The parachute stabilized the trailing system well. The camera operated satisfactorily and survived earth impact. The 24 and 46 frames of film exposed in the two tests showed a view not heretofore avaliable, and provided experimental data of value in analysis of the penetration process.
