Search Results - "Lebaal, N."

Robust low cost meta-modeling optimization algorithm based on meta-heuristic and knowledge databases approach: Application to polymer extrusion die design by Lebaal, N.

“…The new method presented in this paper falls into the category of sampling methods and model management in the optimization process of surrogate related…”
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Friction Stir Welding of Aluminum Using a Multi-Objective Optimization Approach Based on Both Taguchi Method and Grey Relational Analysis by Boukraa, M., Chekifi, T., Lebaal, N.

“…This work deals with the use of a multi-objective optimization method using a hybrid statistic algorithm to improve the Friction Stir Welding of aluminum alloy…”
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3D smooth particle hydrodynamics modeling for high velocity penetrating impact using GPU: Application to a blunt projectile penetrating thin steel plates by Frissane, H., Taddei, L., Lebaal, N., Roth, S.

“…The high velocity impact (HVI) framework with or without penetration leads to considering several physical phenomena, such as large deformation, damage…”
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Robust Optimization of Both Dissolution Time and Heat Affected Zone Over the Friction Stir Welding Process Using SQP Technique by Boukraa, M., Chekifi, T., Lebaal, N., Aissani, M.

“…This works deals with the determination of the optimized parameters in friction stir welding (FSW) process; this through the determination of the optimal…”
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SPH modeling of high velocity impact into ballistic gelatin. Development of an axis-symmetrical formulation by Frissane, H., Taddei, L., Lebaal, N., Roth, S.

“…The investigation of impact biomechanics is of extreme importance in the understanding of damages which are caused by a projectile impacting the human body. In…”
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Axis-symmetrical Riemann problem solved with standard SPH method. Development of a polar formulation with artificial viscosity by Taddei, L., Lebaal, N., Roth, S.

“…This paper presents the development of a cylindrical SPH formulation based on previous study of the literature (Petschek et al) with an explicit formulation…”
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Thermal aspects in friction stir process of AISI 316L: Numerical and experimental investigation by Chamoret, D., Lebaal, N., Roman, A., Schlegel, D., Langlade, C.

“…Friction stir processing (FSP) is an innovative surface engineering method, considered as a green processing technique. A good physical understanding of the…”
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Smoothed particle hydrodynamics - based method for penetrating impacts in a biomechanical context by Taddei, L., Frissane, H., Lebaal, N., Roth, S.

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Shape optimization of coronary stents based on Finite Element Analysis by Lebaal, N., Azaouzi, M., Roth, S.

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Optimal design of multi-step stamping tools based on response surface method by Azaouzi, M., Lebaal, N., Rauchs, G., Belouettar, S.

“…This paper describes a new numerical method for the design of multi-step stamping tools, in which the optimization approach is based on the Response Surface…”
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An optimization method with experimental validation for the design of extrusion wire coating dies for a range of different materials and operating conditions by Lebaal, N., Puissant, S., Schmidt, F.M., Schläfli, D.

“…The objective of this article is to determine a wire coating‐hanger melt distributor geometry to ensure a homogenous exit velocity distribution that will best…”
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Rheological parameters identification using in situ experimental data of a flat die extrusion by Lebaal, N., Puissant, S., Schmidt, F.M.

“…Viscosity is an important characteristic of flow property's and process ability for polymeric materials. A flat die was developed by Maillefer-extrusion, to…”
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An optimal penalty method for the joint stiffening in beam models of additively manufactured lattice structures by Cadart, T., Hirschler, T., Bahi, S., Roth, S., Demoly, F., Lebaal, N.

“…Additive manufacturing is revolutionizing structural design, with lattice structures becoming increasingly prominent due to their superior mechanical…”
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Optimization based simulation of self-expanding Nitinol stent by Azaouzi, M., Lebaal, N., Makradi, A., Belouettar, S.

“…•The stent over-sizing and strut dimensions have an effect on the stent fatigue life.•Strains amplitude and mean strains increase with increasing stent…”
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A new optimization approach based on Kriging interpolation and sequential quadratic programming algorithm for end milling refractory titanium alloys by Lebaal, N., Nouari, M., Ginting, A.

“…Refractory titanium alloys are often used in aerospace industry for applications requiring high temperature strength and high mechanical resistance. However,…”
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Thermal analysis of the friction stir welding process based on boundary conditions and operating parameters by Boukraa, Moustaffa, Bassir, David, Lebaal, Nadhir, Chekifi, Tawfiq, Aissani, Mouloud, Ighil, Nacer Tal, Mataoui, Amina

“…Modelling of friction stir welding (FSW) remains a complicated task, as it is crucial to predict the mechanical properties of the final welded part. This…”
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