Optimization of a passive aircraft arrestor with a depth-varying crushable material using a smoothed particle hydrodynamics (SPH) model

dc.contributor.advisorMillwater, Harry
dc.contributor.authorBarsotti, Matthew
dc.contributor.committeeMemberFeng, Yusheng
dc.contributor.committeeMemberNowak, Brent
dc.contributor.committeeMemberWang, Xiaodu
dc.descriptionThis item is available only to currently enrolled UTSA students, faculty or staff. To download, navigate to Log In in the top right-hand corner of this screen, then select Log in with my UTSA ID.
dc.description.abstractThis thesis explored the viability of a depth-varying passive arrestor system for civil aircraft applications. The current technology for such arrestors involves the use of large beds of crushable aerated concrete, which will safely decelerate aircraft that overrun the runway end. The aircraft rolls through the bed, dissipating energy as the tires crush the arrestor material. Currently, such arrestors utilize homogeneous foam materials. However, a given arrestor bed must function for all aircraft serviced on the runway of interest; such aircraft can differ in size, mass, tire diameter, landing gear configuration, etc. Consequently, the arrestor must function as a one-size-fits-all (OSFA) solution, despite its passive and static nature. The question explored in this thesis was, can a non-homogeneous, depth-varying material enhance the OSFA performance? The study developed LS-DYNA finite element (FEM) tire models for three aircraft: the B737, B747, and CRJ-200. These tires then interfaced with a numerical arrestor bed model, the properties of which were varied parametrically in an optimization study. The arrestor bed employed a Smoothed Particle Hydrodynamics (SPH) formulation, although the original research plan envisioned it as a FEM model. Several chapters outline the extensive comparison of the FEM and SPH methods, as applied to the arrestor model. Preliminary screening compared quadratic and linear depth-varying profiles for an arrestor material, using Radial Basis Function Network (RBF) metamodeling techniques in LS-OPT. The final optimization task targeted the linear profile, which appeared to offer the most promising performance improvement. The optimization showed that the linear depth-varying material offered several advantages over a homogeneous material, including inherent geometry matching with different tire sizes, reduced performance sensitivity for smaller tires, and overall improvement of the OSFA performance.
dc.description.departmentMechanical Engineering
dc.format.extent274 pages
dc.subjectArrestor System
dc.subjectSmoothed Particle Hydrodynamics
dc.subject.classificationMechanical engineering
dc.subject.classificationAerospace engineering
dc.subject.classificationMaterials Science
dc.subject.lcshAirplanes -- Landing -- Safety measures
dc.subject.lcshRunways (Aeronautics) -- Safety measures
dc.subject.lcshLanding aids (Aeronautics) -- Design and construction
dc.titleOptimization of a passive aircraft arrestor with a depth-varying crushable material using a smoothed particle hydrodynamics (SPH) model
thesis.degree.departmentMechanical Engineering
thesis.degree.grantorUniversity of Texas at San Antonio
thesis.degree.nameMaster of Science


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