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Time History Analysis
Curved Railroad Bridge subjected to moving load at speed of 100km/hr
(Frame elements used) |
PENTAGON-Bridge has comprehensive
analysis facilities to design all types of bridge design from
simple grillages to complex cable stayed and suspension bridges.
PENTAGON-Bridge searches the worst position and the worst
combination of loads for specified variables such as moment,
shear, stress, support reaction etc at a given location in a
bridge deck or a structure using the influence line, the
influence surface, the envelope of maximum/minimum values of such
variables.
PENTAGON-Bridge has been developed
specifically for the bridge analysis based on the powerful 3D
finite element technology. PENTAGON-Bridge has its technical
foundation on the famous, general-purpose FE program,
PENTAGON-3D. PENTAGON-Bridge will meet your analysis needs and
reduce your modeling efforts, greatly.
PENTAGON-Bridge covers any of the
following special features for the most cost-effective analysis
of bridges.
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Influence line : produces the
influence line along the path of moving loads
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Influence surface : produces
the influence contour over the area passed by moving
loads
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Bridge Envelope : produces
the maximum and minimum values of the specified parameter
(moment, shear, stress, support reaction etc) for all
elements.
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Bridge Target : traces the
target load condition to make the specified member forces
at a location. For example, this traces the load
condition to make the minimum (negative) moment at a
internal support of bridge.
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Eigenvalue problems (see an Arch
bridge example)
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Earthquake spectrum analysis by SRSS and CQC
method
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Ground motion analysis
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Time history analysis for the dynamic loads
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Dynamic analysis for the moving loads
by simple input of moving velocity and/or (roughness + vehicle model)
Besides the above capabilities, PENTAGON-Bridge extends its application to
:
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Geometric nonlinearity for
truss and frame structures
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Material nonlinearity for
truss, spring and solid elements
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Staged construction
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Solid modeling for
ground-structure interaction
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Stop and restart function
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Result combination between
the load cases, the load stages, the bridge envelopes and
the bridge targets
PENTAGON-Bridge is the Windows
based program on Windows 95, Windows 98, Windows NT and Windows2000. The mesh
generation is easily accomplished by several mouse clicks and
other analysis information is input in full GUI environment. With
the powerful OpenGL functions (the graphic library), the analysis
results are presented in the beautiful 3D graphics.
 
 
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