Topology Optimization Using the Constrained Natural Element Method
Communication avec acte
Auteur
CHEN, Yanda 
MONTEIRO, Eric KOUTIRI, Imade FAVIER, VéroniqueRésumé
This paper focuses on a new topology optimization method for structures combining the solid isotropic material with penalization method (SIMP) and the constrained natural element method (CNEM). Common numerical instabilities such as checkerboard pattern and mesh dependency are studied and a new filter based on natural neighbors is proposed. Several 2D and 3D numerical examples are presented to demonstrate the effectiveness of the proposed method.
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Article dans une revue avec comité de lecture;MONTEIRO, Eric; KOUTIRI, Imade; FAVIER, Véronique (Elsevier BV, 2024-02)
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Communication avec acte;MONTEIRO, Eric; KOUTIRI, Imade; FAVIER, Véronique (Eccomas Proceedia/Institute of Structural Analysis and Antiseismic Research National Technical University of Athens, 2023-06)
Fatigue resistance is one of the most important design criteria to ensure the safety of mechanical structures. In this paper, a topology optimization methodology for volume minimization under local fatigue constraints based ...
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High cycle fatigue properties of material obtained with additive manufacturing (AM) processes such as LPBF (Laser Powder Bed Fusion) remain misunderstood. These properties are complex due to the porous and anisotropic ...
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Article dans une revue avec comité de lectureBROT, Grégoire; KOUTIRI, Imade; BONNAND, Vincent; DUPUY, Corinne; RANC, Nicolas; ; ; ; FAVIER, Véronique (2023)
This work aims to analyze the sensitivity of the very high-cycle fatigue behavior of LPBF-Ti-6Al-4V to microstructure and porosity variations. To do so ultrasonic fatigue testing is performed on five grades of LPBF-Ti-6Al-4V. ...
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Article dans une revue avec comité de lectureBECKER, Eric; BIGOT, Regis; LANGLOIS, Laurent; FAVIER, Véronique; ; (Springer Verlag, 2008)
Since always, Industry minimizes manufacturing process plan and increases mechanical behaviour. In this topic, the thixoforging process offers important perspectives especially steel thixoforging. It is on the way of ...