Hannover Messe 2019 Results in 45 seconds instead of 60 minutes: Simulation Redefined

Editor: Theresa Knell

With Ristra, the Fraunhofer IGD is exhibiting at the fair a GPU structural mechanics equation solver which accelerates component simulation and optimises the design process.

In the false-colour model, the simulation points up weaknesses in the design.
In the false-colour model, the simulation points up weaknesses in the design.
(Source: Fraunhofer IGD)

Ever more complex demands are being made on design results. Besides ensuring component function, the age of additive manufacture is making the question of material use increasingly relevant. Along the path to the optimum, minute changes are made to the most varied parameters. With current simulation software solutions, the wish to be able to determine the results of changes in the structural mechanics at a glance often remains a dream.

Simulation time compressed significantly

As early as 2018, the Fraunhofer Institute for Graphical Data Processing (IGD) had presented a preliminary version of its structural mechanics equation solver Ristra (Rapid Interactive Structural Analysis), which shortened simulation times substantially by transferring simulation calculations onto the graphics card. In the 2019 update, licensed by the software maker Meshparts, Ristra provides even faster results.

At the fair, visitors to Fraunhofer’s joint booth can observe live how Ristra explores the high-dimensional parameter space of a parameterised component and simulates and evaluates the component in real-time. They gain a direct impression of how this software tool can accelerate design and engineering processes and serves as the basis for component optimisation.

For the Meshparts GmbH, the decision to license Ristra as an elementary component in their simulation software was not difficult. “We are proud to be the first to bring an interactive simulator with this performance onto the market,” says sales manager Timo Ziegler.

Technology leap for the design process

In the new 2019 version, developers have succeeded in transferring all simulation calculations onto the GPU. For this, operations for generating linear equation systems were specially optimised for calculations on the graphics processing unit. By exploiting the massive potential for parallel calculations on commonly available low-cost graphics cards, the effects of predetermined stress scenarios on the structure of the component are visualised in false colours in close to real time. During a comparative test, Ristra was able to calculate a model with over 1.3 mn. finite elements more than 80 times faster than a commercial simulation software.

Visit Fraunhofer Gemeinschaftsstand at Hannover Messe in Hall 6, Booth A30.

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