Download or read book Wave propagation Studies in Laterally Confined Columns of Sand written by Warren J. Baker and published by . This book was released on 1967 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt: An experimental study of the relationship between pertinent wave-propagation parameters and the one-dimensional stress-strain behavior of two sands was conducted. The stress-strain relation for the sands was characterized by a nonlinear strain-hardening behavior. The nature of the stress-strain curve implied that shocks should form or be sustained in the soil. This phenomenon was studied by observing the dynamic and kinematic characteristics generated by a soft-fronted stress pulse applied at one end of a long slender column of laterally confined sand. To develop a method of predicting the kinematics of wave propagation from the stress-strain curve, the observed wave-propagation parameters were related to laboratory stress-strain curves. A unique sample container, loading system, and instrumentation system was developed. The experiments approximated one-dimensional conditions up to reflected stresses of 1,600 psi. The results indicated the shocking-up of the soft-fronted input pulse that could be predicted from the laboratory stress-strain curve. The particle-velocity versus wave-velocity relationships dictated the change in shape of the kinematic pulse and could be predicted using a secant modulus analysis technique. A very high stress versus time gradient (rise times less than 50 microsec) was observed to form as the wave propagated through the soil.

Download or read book Technical Abstract Bulletin written by Defense Documentation Center (U.S.) and published by . This book was released on 1967 with total page 784 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Similitude Study of Flexible Buried Arches Subjected to Blast Loads written by Jimmy P. Balsara and published by . This book was released on 1968 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of the study was to investigate and verify model-to-prototype scaling relations for blast loaded buried arches that respond both elastically and inelastically. Four geometrically similar, semicircular aluminum alloy arches with 4-, 8-, 12-, and 36-inch diameters were buried in dense dry sand and subjected to air-blast-induced loads on the surface. The tests were conducted at the Large Blast Load Generator located at the U.S. Army Engineer Waterways Experiment Station. The results of two series of tests, each consisting of 3 repeated shots, ranging from 70 to 300 psi, are presented. Within the range of parameters investigated, the scaling of the dependent variables were adequately verified. These variables included acceleration, velocity, displacement, thrust, and bending moment. (Author).

Download or read book Modern Protective Structures written by Theodor Krauthammer and published by CRC Press. This book was released on 2008-02-01 with total page 530 pages. Available in PDF, EPUB and Kindle. Book excerpt: In today's world, reasonably predictable military operations have been replaced by low intensity conflicts-less predictable terrorist activities carried out by determined individuals or small groups that possess a wide range of backgrounds and capabilities. Because of the threats posed by this evolving type of warfare, civil engineers and emergency

Download or read book Highway Research in Progress written by and published by . This book was released on 1968 with total page 536 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book U S Government Research Development Reports written by and published by . This book was released on 1969 with total page 1326 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Journal written by American Society of Civil Engineers. Soil Mechanics and Foundations Division and published by . This book was released on 1970 with total page 1186 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Government Reports Announcements written by and published by . This book was released on 1969 with total page 1068 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bibliography on Soil Dynamics written by Rudolf Karl Bernhard and published by . This book was released on 1969 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt: 532 BOOKS, PAPERS, BIBLIOGRAPHIES AND SYMPOSIUM PROCEEDINGS CONCERNING SOIL DYNAMICS ARE LISTED, EACH WITH AN ACCOMPANYING ANNOTATION DESCRIBING ITS CONTENTS. The items listed were published from 1961 to 1965. (Author).

Download or read book U S Government Research and Development Reports written by and published by . This book was released on 1969-04 with total page 1338 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Technical Bulletin University of Arizona Agricultural Experiment Station written by University of Arizona. Agricultural Experiment Station and published by . This book was released on 1974 with total page 908 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Journal of the Soil Mechanics and Foundations Division written by and published by . This book was released on 1965 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book G otechnique written by and published by . This book was released on 1998 with total page 468 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Technical Bulletin Agricultural Experiment Station the University of Arizona written by and published by . This book was released on 1922 with total page 626 pages. Available in PDF, EPUB and Kindle. Book excerpt: Includes bibliographies

Download or read book Bibliography of Scientific and Industrial Reports written by and published by . This book was released on 1969-03 with total page 804 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Proceedings written by and published by . This book was released on 1964 with total page 660 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Transactions of the Society of Rheology written by Society of Rheology (U.S.) and published by . This book was released on 1971 with total page 830 pages. Available in PDF, EPUB and Kindle. Book excerpt: