ProSPADD

Description

The steps of this initial design process are

1. Initial NASTRAN run computing normal modes (SOL103) of the untreated structure with generation of an OUTPUT2 binary file (using PARAM,POST, -2 or -4),
2. Import of the NASTRAN model into ProSPADD,
3. Specification of target modes, design constraints, type of SPADD device, areas acceptable for treatment, etc.
4. Automated positioning of devices based on the nominal mode shape properties,
5. Parametric optimization of the device properties to the closest match in an extensive database of possible devices. Estimates of damping levels for all target modes are available during this optimization.
6. Export to NASTRAN bulk format of a model of the design result (this bulk is appended to the original model using an include card). This can then be used to validate the optimization results by running a complex mode analysis (SOL 107, SOL110) or direct frequency response (SOL 108).