When it comes to performance evaluation of structural systems
at the life safety and collapse prevention levels, Nonlinear Structural Analysis
is becoming popular. But the challenge is to create analytical tools and
component models that make it possible to conduct such analysis with a
sufficient degree of confidence. An exact replication of reality is desirable
but not critical. Because of many sources of uncertainty, such as frequency
content and ground motion intensity, and modeling uncertainties, which cannot
be eliminated by the most accurate analysis.
There are various options for nonlinear analysis, and the
easiest one that gets close to reality is usually the best one. Based on
maximum recorded force or deformation values, Observation of behavior during
the analysis (whether pushover or time history) is perhaps more critical than a
rigorous quantitative evaluation.
The main objective of the nonlinear analysis is to understand
behavior instead of fulfilling code-specified limit values.
When buildings are typically designed for seismic resistance
by utilizing elastic analysis, most will experience significant inelastic
deformations under large earthquakes. And to determine the realistic behavior
of structures under such conditions, Modern performance-based design methods
are needed.
Nonlinear analyses offer ways for calculating structural
response beyond the elastic range, including stiffness, strength deterioration
associated with large displacements, and inelastic material behavior, enabled
by advancements in computing technologies and available test data.
Hence it won’t be wrong to say that the nonlinear analysis
can play an important role in the design of new as well as existing buildings.
Non-linear Structural Engineering Software Programs
can be useful for Progressive Collapse Analysis, Seismic and Wind Analysis, and
more. If you are looking for such powerful non-linear structural analysis
software, have Extreme Loading for Structures Software or ELS. It allows
engineers to study the 3D behavior of structures through the continuum and
discrete stages of loading.
For more information, visit- Extremeloading.com
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