FEMZIP
The costs for archiving data, storage and data management could be reduced with suitable data compression tools. The Fraunhofer Institute for Algorithms and Scientific Computing developed this software tool in cooperation with the DYNAmore GmbH, the exclusively distributor for LS-DYNA in German speaking countries.
Compression of LS-DYNA Simulation Results using FEMZIP
FEMZIP is a specialized tool for the compression of LS-DYNA results. It reads and reconstructs the native data formats. The decompression tool FEMUNZIP is available at this website free of charge.
Simulation results are usually stored in 32- or 64-bit floating point representation. Due to numerical approximation errors and the inaccuracy in the model description itself, the 32- or 64-bit floating point representation is often unnecessarily precise compared with the effective precision of the simulation results. Therefore FEMZIP is mainly based on lossy compression. The loss is controlled by the user by means of precision settings specified for the geometry and for each variable. In addition FEMZIP supports the option to compress specific variables losslessly as well as the option to eliminate variables completely. In general, lower precision settings result in higher compression factors.
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FEMZIP is fast, easy to use, reliable and creates small data files
Result files from crash analysis require high storage capacity (>GByte per file, up to 100 TByte per year). The compression tool FEMZIP helps you to save time and archiving resources. Because FEMZIP was specially developed for the compression of simulation results. In contrast to conventional compression tools, FEMZIP starts in the specific data structure of LS-DYNA.
Reduction of information density
FEMZIP allows you to control a reduced precision of the results. Thus it is impossible to reduce the data significant, without loosing important information. The user decides which inaccuracies are receivable or which post decimal positions should be reduced.
Archiving, Back-up and fast data exchange
With FEMZIP you can reduce data files for storage and the time for data transfer, configure Back-up systems effectively - a first view on results with low resolution is also possible using average transfer rate.
Supplementation and Decompression
FEMZIP is also suitable for plotcprs, provided by DYNAmore. The data generated with FEMZIP can be decompressed by using the free tool FEMUNZIP.
Test License
We are pleased to offer you a free test license for testing FEMZIP.
Example with compression factor varies from 5 to 10
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Original D3 Plot File
FEMZIP
medium compression factor 7
FEMZIP
coarse compression factor 11
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| The FEMZIP software tool was especially developed by the Fraunhofer Institute for Algorithms and Scientific Computing SCAI, Sankt Augustin, Germany. |
