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Two New LS-DYNA Case Studies: 16g Sled Test, Blast Analysis

It's been a busy year for Predictive Engineering. We'll take our secret projects to the grave, but we're excited to share two recent analysis projects utilizing LS-DYNA. See step-by-step figures of the process along with video examples and PDF download.

16g Sled Test Analysis of Lavatory Wall with Attendant's Seat

In this LS-DYNA FEA consulting services work, the objective was to limit the design and schedule exposure of a new design. One can think of this as FEA insurance; that is, it is must less expensive and faster to virtually test than to destroy prototypes on a 16g sled test. Experimentally, a 50% percentile dummy or anthropomorphic test device (ATD) is strapped into the chair and then subjected to a 16g acceleration pulse with a half-sine pulse width of 0.18 second.  The test procedure is well defined under 14 CFR Part 25.562, Amendment 25-64 and JAR Part 25.562 with guidance given under SAE AS8049 Rev. A and for the ATD under 49 CFR 572.

Welcome to our new thermal analysis and CFD expert Clay Hearn

Clay HearnClay Hearn, Phd, is Staff Mechanical Engineer at Predictive Engineering with over 15 years experience. Clay gained his initial experience at the the Center for Electromechanics (CEM), a self-funded research organization at the University of Texas at Austin. CEM specializes in applications of pulse power, energy storage, and advanced transportation technologies, and as research engineer, Clay worked on a wide variety of programs. Project highlights from this time include free piston linear compressors, fuel cell hybrid electric vehicles, composite flywheel energy storage, and magnetic bearings.

Prior to joining Predictive Engineering, Clay was Senior Mechanical Engineer for Meggitt - OECO in Milwaukie, OR. OECO provides power generation and power conversion products for aerospace applications. As senior mechanical engineer he was involved in thermal management design and vibration analysis of advanced power conversion products.

In conjunction with his time at CEM, Clay earned his Doctorate in Mechanical Engineering from the University of Texas at Austin. His skills include expertise in structural and thermal FEA utilizing ABAQUS, PATRAN, SolidWorks Simulation, COSMOS/M, as well as CFD analysis utilizing SolidWorks Flow Simulation. Clay looks forward to exploring the capabilities of STAR-CCM+, FEMAP and LS-DYNA.

New offices, same great neighborhood

The GeodeThe Predictive Engineering and CAE support teams are looking forward to moving this month. We've secured offices in The Geode, a refurbished and 2-story addition project nearing completion at SE 25th & Division in Portland. 

The move is short for us, but it's never exactly easy. And our previous location was a bit of a seismic risk. As stress engineers, there was an urgent desire to avoid the sheer irony of dying in a 4-story concrete pancake with a mocking tombstone reading "They knew better..."

We'll post some more pictures as the sheetrock goes up and the desks roll in.

 

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