HyperWorks 12.0 Release Notes

esults will be written to the .op2 file, even if the model only contains CTRIA3 elements.
• PS Field on GRID Bulk Data Entry Was Ignored for Geometric Nonlinear Solutions: PS field is now
recognized for the geometric nonlinear solutions, i.e. the NLGEOM, IMPDYN and EXPDYN analysis
types.
• Loads with Magnitude 0.0 Were Incorrectly Interpreted in Geometric Nonlinear Solutions: Forces,
moments, pressures with magnitude 0.0 are now interpreted correctly for the geometric nonlinear
solutions, i.e. the NLGEOM, IMPDYN and EXPDYN analysis types.
• Wrong Thickness Used for Contact Involving Laminated Composite Materials: The correct thickness
is now being used for contacts involving laminated composite materials.
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RADIOSS for Noise and Vibrations (Bulk Data Format)
AMSES Large Scale Eigenvalue Solver
The AMSES (Automated Multilevel Substructuring Eigenvalue Solver) can calculate thousands of modes
for models with millions of degrees of freedom in less than one hour. The solver scales well with
multiple CPU’s and can be used for modal frequency response and transient analysis, as well as Noise
and Vibration analysis. In addition, it can be used to generate structural and combined fluid-structure
CMS Super Elements. AMSES handles unconnected structures, can be used for modal analysis with
SPCD enforced motion, and runs on both Linux and Windows operating systems. AMSES is an integral
part of RADIOSS and requires no special executable or additional licensing.
Fast Parallel Solver for Modal Frequency Response
A new parallel algorithm has been developed to quickly solve the modal frequency response equations
when thousands of modes are used to define the modal space. With nearly linear parallel speed up
the solver can handle problems with any combination of modal damping, viscous damping, low and
medium rank structural damping in both the fluid and structure. In addition, SPCD enforced motion
can be used and modal energy calculation are available. The use of this new method is controlled by
the PARAM FASTFR.
Modeling the Effect of Heavy Incompressible Fluids on Structural Vibrations
The MFLUID data can be used to model the effects of heavy fluids like oil or gasoline on the structural
vibrations of their containers. This simplified formulation of fluid structure interaction offers an efficient
approach to take fluid effects into consideration.
Equivalent Radiated Power and Far Field Sound Level Pressure
The Equivalent Radiated Power from structural panels can now be calculated. The response can be
calculated for a set of grids or by panels. In addition, the Intensity can be calculated on the panel and
the far field sound pressure level at microphone locations can be output across the frequency range.
One Step Transfer Path Analysis
The Point Mobility, Grid Point Forces, Path Participation, and Transfer functions for multiple control
volumes can all be calculated automatically in a single analysis run. With this new algorithm, the
solution time is significantly less than either of the solution times in the standard two step process.