analysis. Finally the use of contact surfaces to model the accurate impulsive
loads is considered. The theoretical basis of the method will be presented
from a practical engineering perspective with the use of simple examples to
illustrate the various stages. Practical guidelines on survey, for estimating
time step and impact duration prior to the transient analysis are shown.
transient analysis are shown.

Several example nonlinear analysis will be carried out using NEiNastran to
illustrate the process. Full interpretation of the results will be given with
attention paid to understanding what are the design drivers in each case
and what engineering judgements can be made from the data. Typical
problems with nonlinear analysis will be shown, traps to avoid and best
practice. Finally a strategy for dealing with large models is presented. Model
size and solution times are becoming ever longer, and the importance of
reducing analysis and data extraction to practical limits is explored.
Attendees will be give a full set of notes including background modal
analysis techniques.
Tutorial Notes (PDF)

nastran file
normal modes

nastran file nonlinear
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Class Descriptions

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Training Class
Training Class Description
Practical Nonlinear Impact Analysis (SAVIAC)
Who Should Attend?