| 1. | Aeroacoustics - Reconciliation of calculation time and complexity - Onera |
| | Hybrid coupling meshing methods make it easier to take into account complex geometries (finite-element unstructured meshing - discontinuous Galerkine method) while reducing calculation costs (structured Cartesian meshing with finite differences over the rest of the domain).... |
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| 2. | ZéBuLoN, numerical microscope for composites - ONERA's Science Pictures |
| | Result of a finite elements numerical simulation (ZéBuLoN code) showing the field of plastic deformations in a micro-structure of a composite material with a metal matrix.... The images show the micro-structures of these materials calculated by a finite element method using the ZéBuLoN structures calculation code, developed by the Ecole des Mines in Paris in partnership with Onera.... |
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| 3. | onera-schaefer-10.ppt |
| | Finite-element... Finite-element... Finite-element... |
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| 4. | Theoretical Aeroelasticity of Planes, Launchers and Missiles - ONERA / DADS-EN |
| | A very general framework of development was adopted for the implementation of all the aeroelastic simulation functionalities in elsA. These functionalities include : unsteady forced motion simulations, static coupling using a reduced flexibility matrix, static and dynamic coupling using a modal approach, and finally static and dynamic coupling using the full finite element structural model.... |
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| 5. | Internal Noise Prediction in Fixed-Wing Aircraft Fuselages - ONERA / DADS-EN |
| | They are based on the finite element method in the low (LF) and mid-frequency (MF) ranges on a one hand, and on energetic approaches in the high-frequency (HF) range on the other hand :... In the LF and MF ranges, the finite element formulation for the structure and internal fluids is coupled to a boundary integral equation for the external fluid.... |
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| 6. | Hydroelasticity and sloshing of tanks filled with liquid - ONERA / DADS-EN |
| | A first series of experiments was done on a polyurethane tank in the shape of a parallelepiped partially filled with water (figure 3). The system's very low natural frequencies revealed sloshing modes that correspond to the theoretical values and the modes calculated by finite elements (table 1).... |
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| 7. | Crash Analysis and Modeling of Commercial Aircraft Composite Fuselage Structures - ONERA / DADS-EN |
| | In the context of the development and assessment of design methodologies for aircraft structures in composite materials, a section of composite fuselage having the standard dimensions of a metal section of Airbus A320 was studied by finite element simulation.... Finite element analysis of the crash behavior of a composite fuselage.... |
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| 8. | Today's research on Miniature Vibrating Inertial Sensors - ONERA / DMPH-EN |
| | The goal is to develop finite-element type modeling tools capable of handling the coupled multi-physical problems encountered in this type of sensor (thermo-piezo-elasticity coupling, damping by fluid-structure coupling, etc.), and also to develop anisotropic chemical engraving prediction tools for the materials used.... |
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| 9. | Subsonic Aircraft (ASUBi) |
| | In order to study the behaviour of aircrafts in such configurations and to include crash certification requirements in the design process, industrials use powerful finite element tools and computers.... |
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| 10. | Numerical Simulation of the Behavior of Rivets during a Crash - ONERA's Science Pictures |
| | Behavior of Rivets during a Crash copyright © ONERA 1996-2006Numerical simulation of the behavior of rivets during a crash (finite-element method) (). Pictures. |
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