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APPLICATIONS 6 8 | H I G H - P E R F O R M A N C E C O M P O S I T E S Well known for its electronics expertise, Taiwan also maintains a respected luxury motoryacht industry. In 1987, the country exported 1,755 vessels, worth more than $190 million (USD), and today, postrecession, it reportedly has the sixth-largest yachtbuilding community in the world. To advance its boatbuilding expertise, the country is con- structing a dedicated yachtbuilding precinct as part of the Kaohsiung Port City Reconstruction project. Ray Tsai, techni- cal director of Simutech Solution Corp. (Taipei, Taiwan), a Dassault Systèmes (Waltham, Mass.) partner and an expert in the latter's SIMULIA application, says that despite the island's standing in the motoryacht market, its yachtbuilders lacked expertise in CAD/CAE and composite layup optimization, par- ticularly for carbon fber composites. "Many yacht companies weren't familiar with computer tools and traditionally outsourced the upfront design to foreign part- ners," says Tsai. Together with colleagues Rey-Yie Fong of Tiny Machine and Mechanics Laboratory (TiMMeL, National Taiwan University), and Chia-Chuan O and Yu-Chieh Lin, both deputy engineers with the Ship and Ocean Industries R&D; Center, also in Taipei, Tsai developed a demonstration modeling exercise to show builders that SIMULIA enables design iterations far earlier in the development cycle and traces problems during every stage of the pre-production process. "We wanted to help Demonstration software modeling exercise aids Taiwan's yachtbuilding community them move iterating cycles from the manufacturing stage to the design stage so that the performance criteria could be evalu- ated earlier, when it costs much less to modify," he explains. Fong chose three elements of yacht design that challenge Taiwanese manufacturers: composite layup architecture; venti- lation and thermal analysis; and wave-impact transient analy- sis. "Designers, manufacturers and customers were struggling with how to achieve the optimal intrinsic strength and stiffness in their designs along with cabin ventilation effciency, and nav- igating the tradeoffs around static structure performance and dynamic wave-slamming impact," says Tsai. The SIMULIA application portfolio, based on Abaqus fnite element analysis (FEA), and Dassault Systèmes' Simulayt sim- ulation software were tapped for layup analysis and manufac- turing process management. Abaqus CFD (computation fuid dynamics) came into play for ventilation and thermal analysis. Abaqus/Explicit was used for Coupled Eulerian-Lagrangian (CEL) analysis, which is central to slamming impact simula- tion. The CAD tool was Dassault Systèmes' CATIA, which Fong says seamlessly integrated with all three CAE functions for the demonstration. He chose a 70-ft Monte Carlo-type yacht (photo, top left, p. 69) as a simulation benchmark because it is the median size for Taiwan's yacht industry, and it conforms fairly closely to the proprietary specifcations of most manufacturers. 11022 Vulcan St., South Gate, CA 90280 USA Phone 562.923.0838 Fax 562.861.3475 email tlukich@trindustries.com Save Time, Money and Headaches Complete Release Systems from Mold Polishing to Release Applications CALL NOW for effcient solutions to your Mold Release Applications IMPROVE YOUR MOLD SURFACE TOTAL RELEASE SYSTEMS www.trindustries.com 0514HPC Application-OK.indd 68 4/22/2014 3:33:21 PM