Lionel Juillen
Spécialiste Calcul de structures et Modelisation, AIRBUS France
CAREER ASPIRATIONS
My career aspirations are to obtain a challenging position in a “Methods & Tools” and/or R&D department that enables me share and develop my expertise in numerical simulation based design innovation projects, use my experience in multi-cultural technical and multidisciplines environments (aerospace and automotive industries) and allows team management, steering subcontractors and/or collaborations with universities.
COMPETENCES
·19 years of experience in research and development activities in aerospace and automotive industries
·Advanced knowledge of finite element modeling techniques and related softwares
·Advanced knowledge of numerical optimization, statistical methods (Design of Experiments) in the mechanical engineering field
·Large experience in :
o transforming real world engineering design problems into scientific and mathematical solutions
o specifying IT/computer solutions/prototypes and deploying them to customers
·Large experience in development of scientific software tools (optimization algorithms, finite element codes, pre- and post-processing tools, CAD/CAE links, parametric modeling softwares, tuned structural optimization solutions)
·Experienced in structural sizing of aeronautical structure (metallic and composite materials)
·Experienced in small team management and subcontractors
I am AIAA senior Member
107 contactsGeneral structural analyst specialist
Nose Center Fuselage Center Of Excellence. – Stress TransverseTeam A350XWB CWB
Missions :
Analyse metallic and composite structures : Stability & Static strength, fatigue and damage tolerance. Create and approve data used in structural analysis. Develop new techniques and methods for project use. Development of processes that allow design features and materials to be combined in designs that optimise use of topology, form and material for a given set of loads and boundary conditions. Technical Support and assistance to Airbus Programs as finite element expert (Patran & Nastran) to A350XWB stress teams.
Main Realisations (since 2002):
*A380F Barrier wall feasibility study. Joint-authoring of 2 patents.
*Development of tools and parametric studies :
- for Window frame shape optimisation.
- Mesh morphing of Global FEM for Advanced Projects parametric studies.
*NOFUDEM Research Project : management of Global FEM (Finite Element Model), stress leader of the Cockpit WP.
*A350XWB: Development of softwares to build automatically stiffened panels finite element models: knowledge transfer and deployment to Airbus and Risk Sharing Partners (RSP) stress teams. Development of a software to build hybrid frame coupling Detailed models in window frame area. Animation of Detailed FEM activities between Design/Stress Teams of A350 XWB Center Fuselage Section. Organisation, rationalisation and follow-up of DFEM activities at Center Fuselage section level. Animation of weekly meetings with WP stress teams. Configuration management of large models and mesh/CAD link. Planning, steering of large projects in collaboration with up to 5 WPs and subcontractors, scheduled with GFEM (Global Finite Element Model) milestones. Collaborations with COC (Center Of Competences) for needs gathering, consolidation and productivity tools improvements requirements definition.
1995 - 2002Missions:
Demonstrate that design optimisation techniques may be useful for the Renault design offices.
Solve difficult Renault engineering problems with numerical optimisation techniques.
Develop innovative solutions. Deploy numerical design optimisation reseach works and results and train Renault design offices engineers to these techniques. Collaborate with academic researchers and/or industrial partners by conducting projects. Management of subcontractors, coaching of PhD and graduate students. Technological Awareness.
Main Realisations:
Creation of a new global optimisation algorithm with kriging metamodels to solve engineering problems with CPU expansive analyses. Applications: induction heat treatment process optimisation, car body paint process optimisation, shape optimisation of a truck crash absorber (15% weight reduction w.r.t. existing design).
Creation of a shape optimisation methodology taking into account a fatigue life criteria (Dang Van). Development of the associated Sensitivity analysis. Application: shape optimisation of an engine conrod.
Calibration of many numerical models in the fields of passive safety, acoustic and casting process simulations.
Development of an efficient Interior point algorithm for engineering design problems (Collaboration with Prof. Herskovits - Univ. Rio de Janeiro) : FAIPA algorithm ( http://www.optimize.ufrj.br/jose/articles.htm ).
Studies of SAND methodologies (Simultaneous Analysis aNd Design) applied to topology optimization.
Development of multi-objective optimization algorithm (NBI method) Fortran library.
Development of scientific softwares : 27 soleau enveloppes.
1994 - 1995Contribution to the CLIP software family (Thermoplastic resin injection process simulation) coding : R.T.M process simulation module. (C & Fortran)
Customer : Renault Research Department
1992 - 1994*Mechanical parts shape optimization. Design of a Fortran non linear programming software linked with MSC Nastran under CRAY-YMP environment
customer: Renault Research Department (Fortran and C programming)
*Numerical simulation of D-engine block-cylinder casing clamping for broaching process. Subcontractors test campaigns following (Germany and Italy)
customer: Renault Direction of Engineering Support