Stress Analysis of Composite Rubber Membrane Enables Successful First-Time Deployment of Storm Barrier
"The complexity of today's engineering challenges necessitates both the use of powerful simulation software tools and expertise in a wide variety of disciplines," said Frank Perna CEO MSC.Software. "There are more than 200 MSC.Software Professional Services team members worldwide who have the technical and domain expertise to help our customers solve complex engineering problems, especially those related to civil engineering and complex structures and contacts. We are proud of our work with HBW and are very pleased that the dam we helped designed performed exactly as our simulations said it would."
"A prototype is typically a pass/fail situation, it either works or it doesn't. When it doesn't work, it's a guess as to exactly why," Mr. Hans Dries, project manager of HBW. "When it does work, it's difficult to understand if it was on the cusp of failure or over-engineered. Simulation of the inflatable dam provided the information that allowed us to understand its performance and ensure stresses were within the specified margin of safety. With the inflatable dam, there was no alternative to simulation for validating the design."
On Sunday, October 27, 2002, the sixth worst storm to hit the Netherlands since 1970 caused the inflatable dam to automatically deploy at about 5:00 PM local time. The gusts of wind reached 120 km/hour (72 MPH) in the vicinity of the dam, which successfully deployed in less than hour, holding back the incoming waters. Within an hour, the waters receded and the dam deflated within one-hour's time.
The inflatable dam is 75 meters long, 13 meters wide, 8.35 meters height and made of rubber sheet reinforced with nylon cord. Automatically deployed by opening pipelines connecting upstream water with the interior of the inflatable dam, compressors located at each of its two ends simultaneously inflate the membrane with air. The top of the inflatable dam is kept above the upstream water level normal with an internal air pressure between 0.2 and 0.4 bar, with peaks of 0.44 bar. As the water level rises, deformation of the membrane increases. The dams are deflated by opening the air valves and pumping the water out. As the dam deflates, the membrane collapses into a sill on the bottom of the river, where rollers move the membrane equally over the width of the sill.
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About MSC.Software Corporation
MSC.Software (NYSE: MNS) is the leading global provider of simulation software and services, that help companies make money, save time and reduce costs associated with designing and testing manufactured products. MSC.Software works with thousands of companies in hundreds of industries to develop better products faster by utilizing information technology, software, services and systems. MSC.Software employs more than 1400 people in 23 countries. For additional information about MSC.Software's products and services, please visit www.mscsoftware.com .
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