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Maine Marine Composites LLC: Advanced Engineering Analysis

Maine Marine Composites LLC: Advanced Engineering Analysis. 2 Portland Fish Pier, Suite 211 Portland, ME 04101-4699 Voice: 207.774.9616 Fax: 207.221.1416 Email: info@mainemarinecomposites.com. Who We Are…. MMC was founded in 2006 Four employees, two+ associates MMC Specializes in:

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Maine Marine Composites LLC: Advanced Engineering Analysis

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  1. Maine Marine Composites LLC:Advanced Engineering Analysis 2 Portland Fish Pier, Suite 211 Portland, ME 04101-4699 Voice: 207.774.9616 Fax: 207.221.1416 Email: info@mainemarinecomposites.com

  2. Who We Are… • MMC was founded in 2006 • Four employees, two+ associates • MMC Specializes in: • Engineering analyses of barges, boats, ships • Design, stability, performance, seakeeping • Engineering analyses of offshore energy systems • Hydrokinetic energy systems (waves, tidal – moving water) • Platforms for offshore wind systems • Support vessels for offshore wind systems

  3. Analyze barge motion for lashing design Find accelerations, check strength of cargo restraints What We Do:Marine Seakeeping Analyses:

  4. Develop/Market POWERSEATime-Domain Simulator Performance, stability, shock/vibration What We Do:Performance Analysis for High Speed Boats

  5. POWERSEA Navy Project MMC/SAIC/Combatant Craft validation of POWERSEA results

  6. Measurehydrodynamic loads on moored and fixed structures Measure shock and vibration on high speed craft Collect oceanographic data foroffshore energy site evaluation Figure Tekscan A201 Standard FlexiForce® Sensors What We Do:Instrumentation for Marine Environment

  7. Demonstration Project:Single-Point Wave Energy Converter John Brooke, Vice-President, Engineering Committee on Oceanic Resources, Wave Energy Conversion, 2003. • Buoy moves vertically (heave motion) • Air is compressed in center pipe • Drives turbine to create electricity • Efficiency depends on relative heave motion of WEC • If WEC moves up when water goes down, get maximum compression • Design Issues • Mooring system • Sea State Response (RAO)

  8. “Typical” Wave Energy Converter(Oscillating Water Column) University of Wisconsin Madison Nicole Johnson & Eric Olson. CEE 514: Final Project http://owcwaveenergy.weebly.com/

  9. Creating a Surface Model with Rhino3D

  10. Building AQWA Model Import Rhino3D model (IGES) into ANSYS Design Modeler Create surfaces, waterline cutplane Calculate hydrodynamic diffraction using AQWA (potential flow theory)

  11. “Meshing” for AQWA Analysis

  12. AQWA: Mooring System Analysis

  13. OWC/WEC Analysis Results • Resonating OWC: • Movie: “ AnsysWBU2011-08-09 17-54-39-35.avi”

  14. Demonstration Project:Seakeeping Study

  15. Creating a CAD ModelUsing MultiSurf

  16. Building a Model Boat Create full-size patterns (“lofting”) of frames and keel from CAD model Cut parts from marine plywood, glue together Wrap with Kevlar expanded core material Cover with 24-oz fiberglass/epoxy, sand, paint Install radios, motors, machinery, ballast

  17. Free-RunningRadio-Controlled Model • R/C Model of R/V Hugh R. Sharp, Univ. of Delaware • Twin SchottelRudderprop propulsors • Forced roll mechanism to test seakeeping • Inertial Measurement Unit (IMU) to capture motion

  18. Results of Model Tests Tested bilge-keels, fins of various sizes Conclusion: Require active roll mitigation system

  19. Model Test Results • Tests in Casco Bay: • Movie: “ModelRollOcean1.avi” • Movie: “ ModelRollOcean2.avi”

  20. Using ANSYS AQWA for Seakeeping Create MultiSurf/Rhino3D model of R/V Hugh R. Sharp

  21. AQWA: Analysis of Research Vessel

  22. AQWA: Mesh of Sportfishing Boat

  23. AQWA Prediction of Wave Forces (Froude-Krylov Forces)

  24. AQWA: Roll Rotation vs. Heading and Wave Frequency

  25. AQWA: Wave Field Oblique Sea, Non-Linear Waves

  26. AQWA Seakeeping Results • Destroyer in Following Sea • Movie: “ BulbousBowFollowingSea.avi” • Sportfishing Boat in Quartering sea • Movie: “ RegularQuarterBeamHead.avi”

  27. Conclusions • ANSYS software tools can be used to solve real-world problems in the marine industry • MMC offers advanced design and analysis services • Experienced with sophisticated analysis tools • Expertise in hydrodynamics, marine design and analysis

  28. Thanks for Listening… Any Questions?

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