New in DIANA version 9.3
At a glance:
Optimized iterative solver
New direct sparse solver with parallel processing
3D line interface element
Ambient dependent material properties in interface elements
Modified Maekawa concrete model
Extended options for dynamic analysis
Updated version of midas FX+ for DIANA
Enhanced graphical functionality in iDIANA
.com extension replace by .dcf extension
The iterative solver is very fast and requires limited memory usage. For this
reason it is recommended to use the iterative solver in case of large models
containing solid elements. The performance of the iterative solver is further
improved in the new DIANA version. A simple example of a footing load test
gives a taste of what one can expect from the new iterative solver in DIANA.
Figure 1: Model of a footing load
The analysis has been performed on a Linux 2.66 GHz Intel® Xeon® X5355
computer with 24 GB internal memory.
Table 1 shows the CPU time for different number of elements and for the
different phases of input, model evaluation, solution and output.
# HX24L Elements CPU (s)
Model5 100x100x50=500000 59.74
Table 1: Performance of the iterative solver in DIANA 9.3
Direct solver with parallel processing
The new direct sparse solver in DIANA 9.3 is the Intel® PARDISO solver. This
solver can run on multi-processor Intel® processor based Windows or Linux
computers. The performance of the Intel® PARDISO is especially good in large
models with structural elements such as plates, shells and beams.
An example of performance of the Intel® PARDISO is shown in Table 2, which
contains the results from an analysis of a 3D fly-over (s