This thesis demonstrates that a parametrically-modifiable Advanced Marine Vehicle Structural (AMVS) module (that can be integrated into a larger framework of marine vehicle analysis modules) enables stakeholders, as a group, to complete structurally feasible ship designs using the Set-Based Design (SBD) method. The SBD method allows stakeholders to identify and explore multiple solutions to stakeholder requirements and only eliminating the infeasible poorer solutions after all solutions are completely explored. SBD offers the and advantage over traditional design methods such as Waterfall and Spiral because traditional methods do not adequately explore the design space to determine if they are eliminating more optimal solutions in terms of cost, risk and performance.
The fundamental focus for this thesis was on the development of a parametrically modifiable AMVS module using a low-fidelity structural analysis method implemented using a numerical 2D Finite Element Analysis (FEA) applied to the HY2-SWATH. To verify the AMVS module accuracy, a high-fidelity structural analysis was implemented in MAESTRO to analyze the reference marine vehicle model and provide a comparison baseline. To explore the design space, the AMVS module is written to be parametrically modified through input variables, effectively generating a new vessel structure when an input is changed. AMVS module is used to analyze an advanced marine vessel in its two operating modes: displacement and foil-borne. AMVS demonstrates the capability to explore the design space and evaluate the structural feasibility of the advance marine vehicle designs through consideration of the material, stiffener/girder dimensions, stiffener/girder arrangement, and machinery/equipment weights onboard. / Master of Science / In designing large marine products, it is necessary to follow a structured process to ensure the final product adequately meets the needs of a stakeholder’s requirements through engineering verification and validation analyses steps. This thesis demonstrates that the Advanced Marine Vehicle Structure (AMVS) module can be used by marine engineering professionals, in a group, to quickly analyze many structural variations of an advanced marine vehicle without freezing or locking in on an early and potentially suboptimal design. AMVS is intended to be integrated and to work in conjunction with other marine vehicle modules that, together, shipbuilder engineers can use to analyze all major design aspects of the marine vehicle in the total ship design process. Together the modules are implemented as a Set-Based Design (SBD) process to explore multiple total advance marine vehicle solutions to the stakeholder’s requirements and to eliminate the infeasible and worse solutions later during analysis.
| Identifer | oai:union.ndltd.org:VTETD/oai:vtechworks.lib.vt.edu:10919/83377 |
| Date | 22 May 2018 |
| Creators | Raj, Oliver Neal |
| Contributors | Aerospace and Ocean Engineering, Brizzolara, Stefano, Brown, Alan J., Choi, Seongim Sarah |
| Publisher | Virginia Tech |
| Source Sets | Virginia Tech Theses and Dissertation |
| Detected Language | English |
| Type | Thesis |
| Format | ETD, application/pdf, application/pdf |
| Rights | In Copyright, http://rightsstatements.org/vocab/InC/1.0/ |
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