Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 7 of 7 for “"shock mitigation"”.
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Analysis and mitigation of mechanical shock effects on high speed planing boats
… seas, exposes the occupants to severe mechanical shock exposure that has been linked to significant increase in the rates of acute and chronic injury. While many government and civilian organizations have researched various aspects of this problem over the past decade or more, no effective …
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Structural characterization of polyurethane foam and implications of aging
Polyurethane (PU) foam is used as a shock mitigation material in the national stockpile, which degrades over time. A replacement foam, ReCrete was shown to exhibit acceptable mechanical properties after aging, but fractured with impact testing. Previously, processing ReCrete foam at elevated …
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Flexure based mounts for sensitive payloads : a management and engineering study
… matching original Aft Area Mount performance in shock mitigation and deflection limiting.
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Simulation and design optimization for linear wave phenomena on metamaterials
… amplitude filters, sound bullets or elastic shock mitigation structures, among others. The wave equation can be solved accurately using the Hybridizable Discontinuous Galerkin Method both in time and in frequency domain. Furthermore, convex optimization techniques can be used to obtain the …
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Simulation and Testing of Wave-Adaptive Modular Vessels
This study provides a comprehensive performance analysis of Wave-Adaptive Modular Vessels (WAM-V) using simulations and testing data. WAM-Vs are a new class of marine technology that build upon the advantages of lightweight, low-draft, catamaran construction. Independent suspensions above the hulls …
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Multi-body Dynamics Simulation and Analysis of Wave-adaptive Modular Vessels
Catamarans provide vast deck space, high thrust efficiency, and excellent transverse stability, however, in rough conditions they can be susceptible to deck slamming from head seas or bow diving in following seas and a pitch-roll coupling effect that can lead to uncomfortable corkscrew motion under …
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Evaluation of Wave-Adaptive Modular Vessel Suspension Systems for Improved Dynamics
… can significantly affect the transmission of shock and vibrations from the pontoons to the operator or payload tray. Both suspensions are able to mitigate a significant amount of the shocks seen at the pontoons, however, the results do not definitively show which suspension is the better of …