For a Nastran SOL106 nonlinear run, +1000 load cases were run in one BDF. The output fringe plots titles show load increments higher than 100%. How can the customer be reassured that this is normal? Is there a reference in the Nastran QRM? Thanks
For a Nastran SOL106 nonlinear run, +1000 load cases were run in one BDF. The output fringe plots titles show load increments higher than 100%. How can the customer be reassured that this is normal? Is there a reference in the Nastran QRM? Thanks
Since there is no reference in the manuals that can be quoted, this is how it is explained to our client: For the speed of processing, we have chosen to solve multiple load cases in one Nastran-run. The load cases are all independent and not chained. In this way, only one input-file or bulk data file (BDF) is needed for multiple load cases.
As result, only one output-file .xdb is generated, and also only one .f06, .rcf, .log, .op2, .f04, etc.
When multiple load cases are run sequentially in a nonlinear analysis, for the first load case the increment of the applied load is from 0% to 100%. For the second load case, the increment is referenced from 100% to 200%, and this percentage increments 100% per load case. So if 15 different (independent) load cases are solved in one Nastran-run (one BDF-file), you will get an increment of 1500% for the last case. The traditional way is to make a BDF for each load cases and run in batch, but you end up with many files.
Since there is no reference in the manuals that can be quoted, this is how it is explained to our client: For the speed of processing, we have chosen to solve multiple load cases in one Nastran-run. The load cases are all independent and not chained. In this way, only one input-file or bulk data file (BDF) is needed for multiple load cases.
As result, only one output-file .xdb is generated, and also only one .f06, .rcf, .log, .op2, .f04, etc.
When multiple load cases are run sequentially in a nonlinear analysis, for the first load case the increment of the applied load is from 0% to 100%. For the second load case, the increment is referenced from 100% to 200%, and this percentage increments 100% per load case. So if 15 different (independent) load cases are solved in one Nastran-run (one BDF-file), you will get an increment of 1500% for the last case. The traditional way is to make a BDF for each load cases and run in batch, but you end up with many files.
