DYNAMIC RESPONSE AND FAILURE OF 3D PRINTED CYLINDRICAL STRUCTURES SUBJECTED TO IMPACT LOADING
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Authors
Gibbons, Preston B.
Subjects
3D printed
dynamic response
impact loading
strain response
3D printed structures
3D printed material science
fluid-structure interaction
dynamic response
impact loading
strain response
3D printed structures
3D printed material science
fluid-structure interaction
Advisors
Kwon, Young W.
Didoszak, Jarema M.
Date of Issue
2023-06
Date
Publisher
Monterey, CA; Naval Postgraduate School
Language
Abstract
The dynamic response and failure of 3D printed concentric cylinders with a fluid-filled annulus subjected to impact loading was examined throughout the course of this research. The cylinders, which have an outside radius of 70 mm (2.76 in), inside radius of 50 mm (1.97 in), wall thickness of 1 mm (0.04 in) and length of 257 mm (10.12 in) were with strain gages to measure strain along the longitudinal and hoop directions when impacted with a pendulum. Three primary cases were investigated: air-filled annulus at ambient pressure, water filled annulus, and pressurized air-filled annulus. Within the primary cases, four subcases were also explored: 100% and 50% water-filled annulus, and an annulus pressurized to 2 and 4 psi. In each case, the cylinders were placed horizontally while being constrained at both ends and impacted with a pendulum at the center. Throughout the experimentation, the strain gage data and applied impact forces were collected and examined to better understand the effect of fluid structure interaction of a cylindrical structure. The data were compared to identify the effect of varied annulus conditions on both the inner and outer cylinder walls.
Type
Thesis
Description
Series/Report No
Department
Mechanical and Aerospace Engineering (MAE)
Organization
Identifiers
NPS Report Number
Sponsors
Funder
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Citation
Distribution Statement
Approved for public release. Distribution is unlimited.
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.