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Altair HyperStudyDSS
®
TM
Multi-Run Study Environment for Crash Simulations
Parametric studies are challenging to perform on crash simulations due to long computational times, high sensitivity to modeling issues,
nonlinear and dynamic physics. The inherent roadblocks in dealing with these problems for crash analysis differ from those of other types of
simulations such as linear structural problems. To overcome these challenges efficiently, crash specific tools are needed.
Altair HyperStudyDSS, an efficient and user-friendly crash simulation study tool, enables engineers to quickly identify material parameters,
validate simulations and virtually evaluate crash test EuroNCap "STAR" ratings. Leveraging best-in-class post-processing, data mining and
optimization methods, HyperStudyDSS helps users to rapidly understand and improve the crash performance of any virtual model.
Altair® HyperStudyDSS
TM
Altair HyperStudyDSS is a multi-run study environment for crash
simulations. With HyperStudyDSS, analysts and engineers can
automatically identify material parameters, correlate simulation with test
results and evaluate virtual design ratings in an efficient, intuitive
environment. Furthermore, with its crash-specific design of experiments
(DOE) and optimization methods, the tool enables engineers to explore,
study and optimize designs. HyperStudyDSS contains post-processing
and data-mining capabilities that help engineers overcome the
challenging task of extracting relevant information from multi-run
studies. With its unique and powerful suite of tools, simulation results
can be analyzed, sorted and studied effectively in HyperStudyDSS. This
in turn helps the engineers gain a deeper understanding of the design
problem in a fraction of the time.
Multi-Run Study Environment for Crash Simulations
BENEFITS
• Provides an intuitive, user-friendly environment to explore and
study crash problems.
• Improves simulation quality by automatically identifying material
law parameters.
• Provides an automated environment for simulation validation.
• Streamlines the complex EuroNCap design-rating process.
• Helps engineers to gain a deeper understanding of the design with
extensive post-processing and data-mining capabilities.
• Improves design quality and robustness.
HIGHLIGHTS
Multi-Run Study Environment for Crash Simulations
Integrated with HyperCrash, HyperStudyDSS' automated material law
parameter identification capabilities help engineers improve their
simulation quality in a fraction of time taken using traditional
methods. With HyperStudyDSS, users can validate their simulation
with reference to either test data or existing simulation. In the same
environment, users can perform virtual design rating. Using
HyperStudyDSS' crash specific implementations of DOEs and
optimization methods, they can explore, study and optimize designs in
the most efficient way.
Extensive Post-Processing and Data-Mining Capabilities
HyperStudyDSS has extensive post-processing and data-mining
capabilities that simplify the engineer’s job of analyzing, sorting and
studying the results. Using any combination of these capabilities,
engineers can extract the relevant information and arrive at
conclusive design decisions.
Virtual Design Rating with HyperStudyDSS
CAPABILITIES
Material Law Parameter Identification
Identifying material law parameters with HyperStudyDSS' MATFIT module
is a straightforward process: the user defines a standard material
test; HyperStudyDSS sets up and runs the corresponding simulation.
It then compares the results to physical test data and automatically
adjusts material parameters until results from the simulation and test
match. MATFIT has brick, shell and tube elements. It can simulate free-fall
and imposed-drop tests, or other simple tests such as uniform tension with
lateral contraction, uniform compression, simple shear, pure shear and
shear-through torsion. A wide variety of material laws is implemented
including elastic, elastoplastic, hydrodynamic and visco-elastic. An external
material database can also be imported.
MATFIT Graphical User Interface
Test-Simulation Validations
ADVISER, a module of HyperStudyDSS, proposes advanced functions for
the simulation validation. It is also recognized by the APROSYS European
project as the reference product for virtual testing and rating. With
ADVISER, engineers can perform model correlation with a reference; either
for a test or another simulation.
EuroNCap STAR Rating
An important quality criterion of automotive vehicles is the EuroNCap STAR
rating. HyperStudyDSS automatically evaluates the expected STAR rating
from crash simulation results and displays its details in a very intuitive
tabular and graphical format. The vehicle's rating can then be reviewed
and improved using HyperStudyDSS' optimization capabilities.
What-If Simulations and Optimization
Exploring What-if Simulations
HyperStudyDSS assembles powerful design space exploration methods to
evaluate the consequences of design changes on the crash performance
of a system. Monte Carlo, Optimal Latin Hypercube, Full Factorial,
Fractional Factorial and A-Optimal are sampling methods available for this
purpose. Advanced optimization methods that are especially tuned to
optimize crash simulation models are available for automatic design
improvement. Included methods in HyperStudyDSS are Simulated
Annealing, Simplex and Nonlinear Programming Quadratic Linesearch
(NLPQL). External optimizers can also be used.
Post-Processing and Data Mining
Study results can be post-processed as 2D and 3D scatter plots, statistical
data, histograms, correlation matrix, snake view, color map, 2D and 3D
plots. Data-mining tools offered are redundancy analysis (RDA), principal
components analysis (PCA), Clustering Analysis, Correlation Matrix
Analysis, Eigenvalue Analysis, Contribution Analysis, Regression and
Scatter plots.
Post-Processing and Data Mining Suite of Tools
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Altair®, HyperWorks®, HyperMesh®, HyperView®, OptiStruct®, OptiStruct®/Analysis, HyperStudy®, HyperShape®, MotionView®, MotionSolve™, HyperGraph®, HyperForm®, HyperWeb™, HyperView Player®,
HyperXtrude®, Altair Data Manager™ , HyperWorks Process Manager™ , RADIOSS™, HyperCrash™, HyperStudyDSS™, and Helioss™ are trademarks of Altair Engineering, Inc.
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