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dynamis_2 is a numerical software leading to an automated determination of static and dynamic response of mechanical systems in a computationally efficient way. It is used for systems of critical importance and safety, like for predicting the behavior of automotive, aerospace, marine and civil engineering structures. These systems are discretized by finite elements. Frequently, this leads to models with an excessive number of degrees of freedom and strongly nonlinear characteristics. Therefore, a central concept of the code is to provide the option of reducing drastically the order of a system, without sacrificing numerical accuracy. Apart from increasing the computational efficiency and speed, this reduction renders amenable the application of techniques, which are efficient for low order systems only.

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Restart Capability
The restart capability can be applied to all the types of analyses supported. For example, after running a nonlinear transient analysis for a full bus model, a second analysis was run, starting from the beginning, in order to capture the response over a longer time interval. Alternatively, the same results were determined by employing the restart capability to just extend the results obtained before up to the new final time. Direct comparison of the results presented in the following table, demonstrates that the restart capability can lead to substantial savings in time.

 


Elapsed Time [HH:MM:SS]

Time Save (%)

Analysis 1

00:37:06

 

Analysis 2

00:45:58

0.0

Analysis 2 Restarted from Analysis 1

00:18:06

60.0


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