NONLIN
URL : http://www.app1.fema.gov/emi/nonlin.htm
Description
NONLIN is an simple-but-powerful analysis tool for the determination of
the response of single degree of freedom structures. Structures
modeled using NONLIN include a variety of elastic and inelastic
systems, including material nonlinearies due to inelasticity, and
geometric nonlinearities due to buckling response. NONLIN uses a
classic step-by-step temporal integration scheme to solve the resulting
nonlinear equations of motion for the SDOF oscillator, and while NONLIN
provides powerful SDOF analysis capabilities, its intended purpose is
to aid in the practical education of those interested in nonlinear
dynamic structural response.
Features
The core features of NONLIN are those required for the performance of
SDOF analyses, namely a step-by-step stable integration of the
nonlinear equations of motion. In addition to this base feature
set, NONLIN permits saving the results of the analysis in
Excel-spreadsheet format for subsequent use, and NONLIN also provides
visual representation of the computed results. NONLIN courses are
offered by FEMA, and interested users are encouraged to attend one of
these courses.
Pricing and Software Metrics
- NONLIN is free software and can be downloaded from listed URL.
- Software quality for NONLIN is of Community grade
- Supported platforms include Windows-based systems of recent
vintage.