FEM
Finite Element Methods
FEM theory crash course
This course will provide the high level theoretical background behind displacement based finite element codes for the production stress engineer or designer. It is intended to familiarize the typical FEM user with what is happening behind the black box and highlight the common mistakes responsible for most modeling errors.
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How to report FEM based stress singularities
This course describes the common causes of stress singularities in finite element models and engineering approaches to justify ignoring the numerical results that show parts of the model above the yield or ultimate strength of the material. Engineering approaches including net section analysis, Neuber’s method, non-linear analysis, detailed bolted joint, and fitting analysis will be described with real world examples.
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Building system level FEM models
This course will describe in detail recommended approaches to building models meant to connect large systems together such as spacecraft, rockets, aircraft, or detailed electronic enclosures and their components. Recommended practices for connecting the interfacing components, modeling major subsystems, post processing results, and specific modeling practices such as number conventions will be illustrated with real world examples.
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Buckling and stability analysis in FEM
This course will describe the use of finite element modeling to predict both linear and non-linear buckling and structural instability. The focus will be on modeling details to properly capture the physics of the actual configurations and how modeling approaches influence the ability to correlate accurately with test data. Column, column in column, thin shell, monolithic structures, and composites will be covered with real world examples from aerospace.
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Nastran Centric Modeling
This course will focus on the use of Nastran to create engineering models. Common approaches to typical engineering details will be described with the intent of having flexible, scalable, and well documented models. Recommended modeling practices, model checks, and results processing will be detailed with real world examples.
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Presenting Results
This course will provide recommendations for the responsible reporting of finite element model results. Topics will include fringe range and colors, text size, file formats, background colors, labels, number of views, ability to exactly repeat output, tabular outputs, max-min reporting, nodal and elemental averaging, displacement plotting, modes plotting, and transient and random results.
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