ASD/CLAS Capabilities

Configuration Management (ASD/CM)

• Provides the user with the capability to easily establish configuration management over component dynamic math model data: stiffness, damping, and mass matrices, output transformation matrices, forcing functions, dynamic math model’s bulk-data, and label files
• Provides automated configuration management over all component dynamic math data
• Allows the user to easily build “libraries” of configuration managed components and “projects” of configuration managed analyses
• Provides “automated bookkeeping” to speed up analysis set-ups and prevent user errors
• Allows entire analysis team to share configuration managed libraries and projects

Model Checks (ASD/Check) (See example ASD/CLAS Report Output)

• Provides the user with the capability to conduct a series of necessary balance and static checks on the dynamic math model stiffness, damping, mass, and output transformation matrices
  • All dynamic math model formats and output transformation matrix formats are supported (Craig-Bampton, Rubin-MacNeal, Rubin, Modal, Residual Flexibility Mixed-Boundary, Guyan, Hybrid, ...)
• Allows the user to generate professional report with bookmarks and with licensee logo on front cover

Component-Mode Synthesis (ASD/CMS) (See example ASD/CLAS Report Output)

• Provides the user with the capability to easily “add/delete/duplicate/replace” configuration managed components to develop an integrated assembly
  • Constraint equations written simply in terms of GRIDs/DoFs
  • Allows for rigid constraints, multi-point constraints, and soft constraints (springs and dampers)
• Allows the user to easily transform integrated assembly to any desired dynamic math model format (Craig-Bampton, Rubin-MacNeal, Rubin, Modal, Residual Flexibility Mixed-Boundary, Guyan, ...)
• Allows the user to generate professional report with bookmarks and with licensee logo on front cover

Linear Coupled Loads Analysis (ASD/CLA) (See example ASD/CLAS Report Output)

• Provides the user with the capability to easily “add/delete/duplicate/replace” configuration managed components to develop desired analysis configurations
  • Constraint equations written simply in terms of GRIDs/DoFs
  • Allows for rigid constraints, multi-point constraints, and soft constraints (springs and dampers)
• Provides the user with capability to easily add component forcing functions to analysis system
  • User may add forcing functions from different components to the analysis system and even build additional forcing functions as linear combination of component forcing functions
• Provides the user with the capability to control component level frequency content entering dynamic analysis
• Provides the user with the capability to solve equations of motion directly (coupled equations) or utilize system modes to transform to truncated modal coordinates
• Allows the user multiple damping options:
  • Diagonal system damping (DSD)
  • Full Triple Matrix Product (FTMP) system damping
  • Two-step Damping
  • Combination of DSD with interface damping
  • Combination of component with interface damping
  • “Hybrid” damping — utilized by launch vehicles such as Minotaur
• Provides the user with the capability to graphically review (ASD/Results) all analysis time-histories, response spectra, max/mins, ...
• Provides the user with the capability to generate “custom” professional reports (ASD/Report)

Nonlinear Coupled Loads Analysis (ASD/NCLA) (See example ASD/CLAS Report Output)

• Adds the following nonlinear capabilities to ASD/CLA:
  • Deadbands
  • One-sided deadbands
  • Multi-linear springs
  • Foam
  • Snubbers/Bumpers
  • Straps

Variational Coupled Loads Analysis (ASD/VCLA) (See example ASD/CLAS Report Output)

• Adds the following capabilities to ASD/CLA:
  • Allows the user to vary component parameters such as stiffness, damping, mass, frequency, interface stiffness, and interface damping in a user specified range and increment order to assess the impact of these variations on component response

Enforced Motion (ASD/EM)

• Adds the following capabilities to ASD/CLA:
  • Allows the user to enforce displacements, velocities, and accelerations at user specified component DoFs

Random Vibrations (ASD/Random) (In Development)

• Adds the following capabilities to ASD/CLA:
  • Allows the user to conduct frequency response and random vibration analyses
  • Component forcing functions defined in terms of auto- and cross- power spectral densities
  • Allows for component level output transformation matrix recoveries (both RMS and power-spectra)

Utilities (ASD/Utilities)

• Provides user with a variety of component level capabilities including:
  • Generation of component damping matrices
  • Generation of component net-load factor and interface force output transformation matrices
  • Transformation of component dynamic math model/output transformation matrices to a variety of dynamic math model formats, e.g., Craig-Bampton, Rubin, Rubin-MacNeal, ...
  • Unit conversion of component dynamic math model/output transformation matrices/bulk-data

Graphical Results Reviewer (ASD/Results)

• Provides the user with the capability to quickly and comprehensively look over ALL coupled loads analysis max/min tables, time-histories, response spectra

Custom Report Generator (ASD/Report)

• Provides the user with the capability to quickly prepare a custom report with multiple analysis appendices and comparison tables