421-Structural Nonlinearity - Part 2 - Analysis Methods
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This continuing education course is written specifically for professional engineers with the objective of relating to and enhancing the practice of engineering.
Only a small sliver of real-world behavior is linear, so mentioning nonlinear analysis without any context is opaque if not ungraspable. The term nonlinear analysis relates as much information as suggesting a “special tool” or a “custom solution”. There are several different analysis methods that can solve structural nonlinearity and they have curious and indistinct names that have been informally adopted by the industry. What types of nonlinearities can MNO or 3rd-order analysis solve? Which of a simulation analysis or an analysis using a geometric stiffness matrix is an approximation? How does a 2nd-order analysis work?
This course surveys the current analysis methods capable of solving structural nonlinearity. This course presents the types of nonlinearity that each method can solve and introduces concepts such as recursion, kinematics, iterative analyses, benchmark problems, and discretization. The discussions are anchored by numerous illustrative diagrams and detailed examples of how iterative analyses converge.
Note: The content in this series of courses is advanced and
requires considerable experience with linear structural analysis and
a solid understanding of structural behavior. It is recommended that
the preceding courses in this series be completed prior to taking
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