Browsing by Subject "Projectiles"
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Item Dynamics of projectile impact in a granular material, and the dynamics of a single sedimenting sphere in fluid(2005) Lee, Andrew Thomas; Swinney, H. L., 1939-Item Investigation of the mechanics of windborne missile impact on window glass(Texas Tech University, 1999-12) Bole, Scott A.Engineers have recognized that failure of the building envelope is one mechanism that can lead to severe damage of structures during windstorms. The building envelope consists of the roof, doorways, windows, and cladding components that form the exterior wall system of a building. Failure of the building envelope results in internal pressurization of the structure which may lead to structural failure. For this reason, engineers have begun to focus on ways to make the building envelope resistant to the effects of severe windstorms. Window glass is one type of cladding material. Of the threats posed by a windstorm, the major threat to window glass consists of windborne debris. ASTM El886, ASTM El996, and SSTD 12-99 address the Issue of resistance to windborne missile impacts. This thesis concludes that a simple statement of an object's kinetic energy upon impact by itself cannot serve to predict the outcome of the impact. Conservation of angular momentum occurs during a missile impact on window glass. Finally, energy is lost during a missile impact on window glass.Item Wind-generatd missile impact on composite wall systems(Texas Tech University, 1998-05) Carter, Russell R.Testing and evaluation of wind generated missiles and their effects on waU systems has expanded over the last thirty years. The testing has investigated a broad spectrum of impact scenarios and created a database of impact data. To continue the development and understanding of wind generated missUe impact, several previously tested wall systems were validated and many new waU concepts were tested. Previous testing has focused on the goals of the specific project that was funding the tests. The focus of this research is to investigate composite wall systems to be used for occupant protection. In order to advance the understanding of the responses of the wall systems to impact, the wall systems will be designated using concepts based on impact djoiamics. However, the majority of impact dynamic concepts are based on high-speed munitions and composite materials. The composite wall systems tested are made from distinct parts such as plywood, steel, and concrete. In this document, composite does not necessarily refer to highstrength, Hghtweight engineering materials consisting of combinations of alloys, plastics, and ceramics.