1. Training Manual 001419 15 Aug 2000 2.2-1 2.2 Loading and Solution Enhancements in the loading and solution area include: A.Function BC tool B.Direct Matrix Assembly C.Sparse Solver Improvements

2. Training Manual 001419 15 Aug 2000 2.2-2 Loading & Solution A. Function BC Tool Allows building a library of functions that can be used to apply complex boundary conditions easily –Calculator like functionality to build equations –Supports all primary variables (x, y, z, temp, pres, time etc.) –Each function must be saved to a file (archived) –Functions can be retrieved from archived files and applied as TABLE array loads Tabular boundary conditions extended to support all FLOTRAN dofs * Details covered in CFD & Acoustics

3. Training Manual 001419 15 Aug 2000 2.2-3 Create functions using function builder Save functions to files and create an archive of various functions Loading & Solution … Function BC Tool When needed read in any saved function Supply a parameter name for the array and any other required data as directed Apply load using ‘existing table’ and the parameter name

4. Training Manual 001419 15 Aug 2000 2.2-4 Single equation e.g. Hf= 0.5*sqrt(x) Multivalued function e.g. 0<x<1, Hf= 0.5*sqrt(x) 1<x<2, Hf= 0.25x 0.3 Standard Calculator functions Regime variable defined Loading & Solution … Function BC Tool Preprocessor > -Loads- Apply > -Functions- Define/Edit

5. Training Manual 001419 15 Aug 2000 2.2-5 Specify the range for Regime 2 Specify the function for Regime 2 Save the function to a file for later retrieval Loading & Solution … Function BC Tool

6. Training Manual 001419 15 Aug 2000 2.2-6 When you want to use a saved function, –Preprocessor -> Loads-> Apply > -Functions- Read File … Fill in material number (if needed) and any constants in the equations Supply table array parameter name Loading & Solution … Function BC Tool

7. Training Manual 001419 15 Aug 2000 2.2-7 Element matrix generation and assembly for ALL element types in memory –Default assembly process starting in 5.7 for static, full transient and Block Lanczos modal –No EMAT or EROT files for most analyses. FULL file created if required. –Supports all nonlinearities –Less disk space and I/O resulting in up to 30% reduction in solution time on PCs –Use the command EMATCREATE,YES to switch to writing the emat file Required for PSOLVE procedures and prestressed analyses Loading & Solution B. Direct Assembly

8. Training Manual 001419 15 Aug 2000 2.2-8 Memory usage improvements –Uses dynamic memory allocation Disk I/O improvements –Disk space reduced by 2 for large jobs (no more LN22 file) –Eliminates I/O for small models Up to 15% reduction in CPU time for models having greater than 50,000 dofs Loading & Solution C. Sparse Solver Improvements