MPM Archiving Options
Theses command determine the way results of the calculations are archived for later analysis:
Archiving Particle Data
In MPM calculations, the calculation results are stored in a series of archive files. These files give periodic snapshots for the state of each material point. These files are read after the analysis to plot the results; in fact the results cannot be visualized without them.
Scripted Input Files
n script input files, the archiving options have two forms:
Archive (path) ArchiveTime (time),<(first time)> ToArchive (list on quantities)
or
ArchiveUnique (path) ArchiveTime (time) ToArchive (list on quantities)
where
- (path) gives a relative path name from the saved output file to the archived files. The path name should be entered in Unix style or
folder/folder/folder/root
where there can be any number of folders followed by the root archive file name. The saved files will be in that location and have names
root.num
where num is the step number being archived. The folder names and root name cannot contain any colons (":"), to avoid conflict with MacOS path names) or spaces (to be consistent with most Unix systems).
If a series MPM calculations are saved to the same folder without changing the archive path name, the later calculations will most likely overwrite the earlier calculations causing you to lose results. The solution is to use the second form above that replaces the Archive command with an ArchiveUnique command. The ArchiveUnique command forces creation of a new folder within the last folder of the path. In the above path example, the ArchiveUnique option will write to the files:folder/folder/folder/#/root.num
where # is chosen from 1, 2, 3, ... to create a unique folder. You can then safely write multiple MPM output files to the save folder without conflicts
- (time) gives the time interval between archiving results in milliseconds (it can be an entity). The analysis will archive the initial state (to define) and then after each specified time interval. You only need to archive enough results to get good plots or movies after the analysis is done.
- (first time) is an optional time to start archiving in milliseconds (it can be an entity). If this time is greater than zero, the analysis will archive the initial state (to define the problem) and not archive anymore more results until this time is reached. After this time, archiving will proceed at the time interval specified in (time).
.
XML Input Files
In XML input files, the archiving commands are
<ArchiveTime units='ms'>2</ArchiveTime> <FirstArchiveTime units='ms'>100</FirstArchiveTime> <ArchiveRoot unique='0'>results/fullDCB/root.</ArchiveRoot> <MPMArchiveOrder>mYYYYNYYYNYYNNNNNY</MPMArchiveOrder> <CrackArchiveOrder>mYYYN</CrackArchiveOrder>