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Full-Text Articles in Engineering
Design Of A Meta-Material With Targeted Nonlinear Deformation Response, Zachary Satterfield
Design Of A Meta-Material With Targeted Nonlinear Deformation Response, Zachary Satterfield
All Theses
The M1 Abrams tank contains track pads consist of a high density rubber. This rubber fails prematurely due to heat buildup caused by the hysteretic nature of elastomers. It is therefore desired to replace this elastomer by a meta-material that has equivalent nonlinear deformation characteristics without this primary failure mode. A meta-material is an artificial material in the form of a periodic structure that exhibits behavior that differs from its constitutive material. After a thorough literature review, topology optimization was found as the only method used to design meta-materials. Further investigation determined topology optimization as an infeasible method to design …
Feasibility Analysis Of Steam Ventilation In Supercavitation Design, Austin Culberson
Feasibility Analysis Of Steam Ventilation In Supercavitation Design, Austin Culberson
All Theses
The complete envelopment of a submerged object by a continuous cavity, or supercavity, results in significant reduction of the skin drag acting on the object, allowing for substantial increases in the maximum speeds of underwater devices. The formation of supercavities often requires supplemental ventilation, traditionally by non-condensable gasses, as natural supercavitation occurs at relative speeds between the object and liquid medium that are infeasible for the device to reach without supercavitation itself. The aim of this research is to investigate the feasibility of vaporous ventilation in supercavitation design with the hope of reducing non-condensable ventilation requirements which are inherently limited …