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Stress analysis results: aircraft fuselage


Managing the load In an effort to get the maximum possible utilisation out of compute systems, aerospace companies are investing in workload management soſtware. Altair Engineering’s Robert Yancey comments: ‘Aerospace customers come to us and say that they want to be able to use hardware resources in the most efficient manner, with very little idle time, but the difficulty is that these companies place a large number of rules on their simulation jobs. Certain types of analyses may automatically get higher priority, for example, and so our soſtware enables companies to program in their policies and procedures for the use of specific compute clusters.’ Te benefit of this approach, he says, is that not only do users know that the work will be done as fast as possible, but IT departments are able to build and manage resources in a flexible manner. Pietro Cervellera, also of Altair


Engineering, adds that this is especially important for international enterprises using machines located throughout the world. ‘In environments where several engineers could each be running a simulation, creating many models and then running analyses that are very expensive in terms of compute power, it is important jobs can be submitted to the most efficient computational resource at any given moment,’ he says. Efficiency is a necessity in any industry,


and within simulation one of the biggest challenges, according to Cervellera, is a lack of harmony. ‘Tere are many unconnected islands within simulation, such as CFD, structural simulation and motion simulation for flaps and landing gear, and specific


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THE DAYS OF WRITING EVERYTHING TO DISK ARE GONE, ESPECIALLY AS WE MOVE TOWARD EXASCALE


problems require the use of extra tools. One of the prominent trends at the moment is the need for these tools to be harmonised.’ He continues by saying that, in the past, there were attempts to deploy one simulation tool that would solve all problems, but each of these attempts failed and the industry is now agreeing that different expert tools are needed for individual simulation disciplines. Altair provides a single working


environment that can be used for mathematical modelling, result visualisation process creation, and data and process management. It provides a platform of integration that enables engineers to harmonise processes – a crucial point given that each process in aerospace requires a multi-discipline approach. In conclusion, Cervellera states that the


paradox commonly seen in aerospace is that on the one hand there is an increasing need for simulation reliability, complexity and accuracy – which is why multi-physics models and multi-scale models are coming into play – and on the other, is the need to simplify and standardise simulation processes. ‘Standard processes must be defined and applied throughout the supply chain in order to ensure the quality of the simulation work,’ he advises.


Altair Engineering


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