Apparently, the engineers who designed the rotating amphitheater at the Hoover Dam took their proximity to Las Vegas too seriously. They took a gamble and designed the turntable, which holds 450 people, without using finite element analysis. Bad idea. Soon after the amphitheater opened, the turntable broke down. Engineering consultant David Dearth got a U.S. Department of Interior contract to determine the cause of the failure. He did use FEA, specifically MSC.visualNastran for Windows. Finding: Use stronger steel and bigger axle.
An in-depth survey of 700 current and future users of 3D printing holds few surprises, but results emphasize some major trends already in progress. Two standouts are the big growth in end-use parts and metal additive manufacturing (AM) most respondents expect.
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