Cylindrical Structure under Shock Loading
Abstract
Underwater pressure vessels experience a multitude of dynamic and pressure loading when in a submerged environment. Internally, those forces are negligible because of the sound structural integrity the vessel is providing. However, if an underwater explosion should occur the chances are slim but never zero the outer shell of that pressure vessel would be affected depending on what is on the other side. This research is to investigate composite cylinders response to underwater shock loading through directed pressure loading by compressed air shock pipe underwater release. Two cases are considered, single-wall and double-wall cylindrical structures, to determine the material response and possible failure. Both cases are tested at various stand-off distances, with 0%, 50%, or 100% water levels internally or within the annulus. Fluid-structure interaction effect was discussed for each case. Strain gauges are attached at specific points on the cylindrical structure, and underwater blast sensors are used to record pressures from the directed shock loading. Experimental data is collected and stored using a National Instruments PXIe-1071processor. By presenting the behavior of composite structures in response to dynamic loading, we provide data for future and present composite vessel design as well as validate current research work.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 2023
- Accession Number
- AD1212936
Entities
People
- Verna J. Macapagal
Organizations
- Naval Postgraduate School