Previsualization with Blender of a complex structural test
Written by Matthieu Vitse Matthieu Vitse is a freelance scientific visualization expert. He has a PhD in computational mechanics from ENS Paris-Saclay, and his main activity now focuses on the post-treatment and visualization of large complex data simulations and experiments. More info at www.sciviz.fr (from Vitse et al. Toward virtual design and optimization of a…
Toward quantitative image analysis of Bird strike tests
By Florent Mathieu, Ceo of EikoSim Redactors : N. Cordero, F. Fremy, M.Beneck for Saint-Gobain, F. Mathieu for EikoSim Aircraft radomes produced by Saint-Gobain are made of composite materials. In addition to the usual design requirements that these structures must comply with (lightness, aerodynamic shape, impact resistance), they need to be RF transparent so that the systems…
Understanding and controlling the sources of discrepancy between tests and simulations
By Renaud Gras, Co founder – CTO of EikoSim Adjustment and validation of simulations Simulations play an enhanced role in the design, the qualification and the certification of industrial products by forming the basis of strategic decisions. Therefore, the role devolved to experimental testing has also been modified. These tests were the essential part of…
How to preview your test using Blender software?
By Pierre Baudoin, R&D engineer of EikoSim Blender as a supporting tool for 3D DIC tests Have you ever heard of Blender to preview a mechanical test? Blender is a comprehensive, open-source, cross-platform 3D creation suite that can be used to create photo-realistic renders, animations, or even full-length movies. Blender’s render engine can produce physically…
Digital Image Correlation – The basics
By Florent Mathieu, CEO of EikoSim Digital Image Correlation (DIC) is a measurement technique that processes pictures taken from cameras to track and record the surface motion of a deforming solid. In the mechanical engineering field, it has been widely used to monitor and process test data in both research and industrial contexts, for applications…
The digital twin definition: bringing the real world into your simulations
By Florent Mathieu, CEO of EikoSim To understand the definition of a Digital Twin, we suggest you put it in the context of product development. To estimate a structure’s mechanical behavior, proactive numerical studies have become common practice in mechanical engineering. Finite element modeling is now involved at all stages of the mechanical design project.…
Digital Image Correlation, how to choose your acquisition hardware?
We have already seen together the principles of digital image correlation and the contributions of such measures. Today we will see how to choose its acquisition hardware so that it is adapted to the different use cases encountered. Image acquisition equipment means the cameras of course, but also the lenses, the lights, the mounting brackets…
Towards a better understanding of mechanicals tests thanks to DIC, with ALSTOM and CETIM
Consistency of simulation and test data The consistency of test data and numerical results is paramount while carrying out the simulation-experiment comparison required to validate numerical simulations. First of all, mechanical tests need to respect the specifications laid out during their design: sample geometry, load path, location and orientation of the loading point, measurement points…
Digital image correlation: The contribution of the global method
By Florent Mathieu, CEO of EikoSim Why a “global” method? Digital image correlation consists in measuring a displacement field between a reference configuration and a deformed configuration. There are two large families of algorithms to make this measurement: the subset-based methods repeat a search operation for a battery of subsets positioned on a grid in…
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