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Trip & Training Recap: Houston, Lockheed Martin, and BBQ

BBQ in HoustonThe weather was hot and muggy as Tropical Storm Cindy floated past Houston but fortunately, the power stayed on and the FEMAP and NX Nastran training class went off without a hitch. Ten analysts from Lockheed Martin’s Orion program participated in the training and worked through real-world examples from CAD geometry to full Global-Local models.

The engineers have honed their Nastran skills working on the Orion Multi-Purpose Crew Vehicle and now have the FEMAP pre and post processing techniques to liberate them from the dreaded text editing and manual meshing.

I’d like to thank the class for their challenging questions and in-depth discussion of finite element modeling and analysis. To expand your own FEMAP and NX Nastran skills, visit us in Portland, Oregon for our next training on October 9th 2017.

SLIDESHOW:

Cooling Analysis of Composite Mandrel using STAR-CCM+

STAR-CCM cooling analysisModern jet engines are getting bigger and also lighter. For example, years ago it was common to use titanium or stainless steel as blade-out containment materials. These large diameter and thick rings can now be replaced by modern carbon fiber composites; however, manufacturing large diameter composites with tight tolerances is difficult. One of the key challenges is maintaining tight tolerance during heating (curing) and cooling (mandrel removal) process. In a recent CFD project for a Tier 1 aerospace manufacturer, we used STAR CCM+ to simulate the thermal-flow process of cooling the composite mandrel down to room temperature. STAR was particularly suited for this project given its advanced polyhedral meshing technology coupled with a fast MPP thermal-flow solver (High Performance Computing (HPC)). Results in this CFD consulting project were verified against prior experience and hand calculations.
 

Another successful LS-DYNA training class

LS-DYNA training May 2017A quick thank-you is due to all of the attendees to our May 2017 LS-DYNA training. The five day class focused on building accurate nonlinear transient simulations. The learning process was based on workshops covering how one could take basic data (e.g.,engineering stress-strrain) and geometry and then create an advanced simulation that could be verified and taken forward to validation with confidence. Best practices were advocated from mass scaling, element formulation (elform=-16) to MORTAR contact to encourage the students to first get a model that would run and then later on optimized it for numerical efficiency. The last day of the class focused on LS-DYNA's rapidly evolving implicit capabilities. Our next LS-DYNA training class will be May 14 - 18, 2018.

 

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