1 Maine Marine Composites LLC: Advanced Engineering Analysis 2 Portland Fish Pier, Suite 211Portland, MEVoice:Fax:
2 Who We Are… MMC was founded in 2006 MMC Specializes in: Four employees, two+ associatesMMC Specializes in:Engineering analyses of barges, boats, shipsDesign, stability, performance, seakeepingEngineering analyses of offshore energy systemsHydrokinetic energy systems (waves, tidal – moving water)Platforms for offshore wind systemsSupport vessels for offshore wind systems
3 What We Do: Marine Seakeeping Analyses: Analyze barge motion for lashing designFind accelerations, check strength of cargo restraints
4 What We Do: Performance Analysis for High Speed Boats Develop/Market POWERSEA Time-Domain SimulatorPerformance, stability, shock/vibration
5 POWERSEA Navy ProjectMMC/SAIC/Combatant Craft validation of POWERSEA results
6 What We Do: Instrumentation for Marine Environment Measure hydrodynamic loads on moored and fixed structuresMeasure shock and vibration on high speed craftCollect oceanographic data for offshore energy site evaluationFigure Tekscan A201 Standard FlexiForce® Sensors
7 Demonstration Project: Single-Point Wave Energy Converter Buoy moves vertically (heave motion)Air is compressed in center pipeDrives turbine to create electricityEfficiency depends on relative heave motion of WECIf WEC moves up when water goes down, get maximum compressionDesign IssuesMooring systemSea State Response (RAO)John Brooke, Vice-President, Engineering Committee on Oceanic Resources, Wave Energy Conversion, 2003.
8 “Typical” Wave Energy Converter (Oscillating Water Column) University of Wisconsin MadisonNicole Johnson & Eric Olson. CEE 514: Final Project
16 Building a Model BoatCreate full-size patterns (“lofting”) of frames and keel from CAD modelCut parts from marine plywood, glue togetherWrap with Kevlar expanded core materialCover with 24-oz fiberglass/epoxy, sand, paintInstall radios, motors, machinery, ballast
17 Free-Running Radio-Controlled Model R/C Model of R/V Hugh R. Sharp, Univ. of DelawareTwin Schottel Rudderprop propulsorsForced roll mechanism to test seakeepingInertial 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”
20 Using ANSYS AQWA for Seakeeping Create MultiSurf/Rhino3D model of R/V Hugh R. Sharp
26 AQWA Seakeeping Results Destroyer in Following SeaMovie: “ BulbousBowFollowingSea.avi”Sportfishing Boat in Quartering seaMovie: “ RegularQuarterBeamHead.avi”
27 ConclusionsANSYS software tools can be used to solve real-world problems in the marine industryMMC offers advanced design and analysis servicesExperienced with sophisticated analysis toolsExpertise in hydrodynamics, marine design and analysis
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