“Essentially, all models are wrong, but some are useful.”
Most applications of LS-DYNA are for complex, and often combined, physics where nonlinearities due to large deformations and material response, including failure, are the norm. Often the goal of such simulations is to provide predictions which will ultimately be used to guide product development and safety assessments. In very few cases, some limited experimental data is available to help guide the model development, and assess the accuracy of the results. When no experimental data are available, or the LS-DYNA predictions are intended to guide development of limited experiments, in addition to the predicted result, the analyst needs to provide, and convey to the customer, the analyst’s degree of confidence in the results.
This two day class provides instruction on the selection and use of the LS-DYNA solvers used for analyzing blast and penetration related problems. This class should be considered a prerequisite for the related Blast and Penetration Modeling with LS-DYNA classes offered by the presenters.
Insights into modeling and simulation are illustrated through examples. An emphasis is placed on modeling techniques, guidelines for which technique(s) to select, which techniques work well and when, and possible pitfalls in modeling choice selections. Simulation credibility is demonstrated through solution of multiple models, with associated multiple solvers, required checks of global and local energies, and mesh refinement strategies.
This training class is intended for the LS-DYNA analysts possessing a comfortable command of the LS-DYNA keywords and options associated with typical Lagrange analyses. The training class will attempt to provide the analyst with the additional tools and knowledge required to make appropriate modeling decisions and convey the level of confidence in predictive results. The typical attendee is likely to have one or more years of experience in modeling and simulation, and has become aware there is more to providing predictive simulation results than just running LS-DYNA. Because the class uses example problems to illustrate concepts and techniques, numerous modeling ‘tricks’ and options are discussed, and this knowledge would benefit any LS-DYNA user.