Results were interrogated based on Steinberg margins for positive deflections (IC chip level deflections), 3-signma stresses for PCB and structural components and fastener stresses according to NASA 5020A or NASA-STD-5020 “Requirements for Threaded Fastening Systems in Spaceflight Hardware”. The FE model was constructed using standard Simcenter Nastran element technology and analyzed thru the complete dynamics spectrum from normal models, response spectrum, random vibration and shock. Predictive’s FEA services were contracted to perform this work due to +20 years of FEA dynamics consulting experience. The system consisted of multiple PCB’s with various integrated circuit (IC) chips surface mounted on the board along with power transformers and other electronics components – basically a complete signal processing computer in a “box”. Our client was required to create a digital prototype of their electronics system for virtual shaker-table testing. One might say this is Predictive Engineering’s “bread and butter” type of analysis work: Linear Dynamics where all good things are based on the normal modes or Eigenvalue analysis. Normal Modes, PSD and Shock Analysis of Aerospace Electronics The only commonality in our FEA consulting work is that every project has passed our clients’ requirements with flying colors.
Our work portfolio ranges from deep-diving submarines to large motor home chassis analysis to USAF satellites. We live and breathe FEA analysis and our experience has been earned the hard way by having our models validated in test and in service for over 20 years. We have also been active in the renewable energy field with complete mechanical stress and dynamic analysis of wind turbine systems, solar panels and photovoltaic systems. 2 pressure vessel analysis from heat exchangers to NQA-1 nuclear and likewise, from construction to transportation, nonlinear contact analysis for complicated assemblies and plastic thread design, high-power transmissions and gear assemblies, off-shore oil patch winches, top drives, and many other fields. Our FEA consulting engineers have direct and validated experience in detailed stress analysis, linear dynamics (normal modes, sin sweep, PSD or seismic analysis), ASME Section VIII, Div.
Predictive Engineering brings to bear more than 20 years of finite element analysis FEA consulting experience in solving the most difficult mechanical engineering analysis challenges.
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