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AUTOMOTIVE FORMABILITY SIMULATION PROCESS FOR EARLY DESIGN PHASES
J. EL-SAYED,H. KIM,R. FRUTIGER,W. LIU 한국자동차공학회 2005 International journal of automotive technology Vol.6 No.3
Formability simulation of automotive panels at early design phases can reduce product and tooling development time and cost. However, for the simulation to be effective in leading the design process, fast and reliable results should be achieved with limited design definition and minimum modeling effort. In this paper, nonlinear finite element analysis is used to develop an automated process for the formability simulation of automotive body panels at early design phases. Due to the limited design definition at early design phases, the automated simulation process is based on the plane strain analysis for selected number of typical sections along the panel. Therefore, an entire panel can be analyzed with few sections. The state of plane strain can be easily induced, during simulation through symmetry and applied boundary conditions that simplify the modeling process. To study the reliability and effectiveness of the developed simulation process, the analytical results are compared with measured results of production automotive body side panels. The comparison demonstrates that the developed simulation process is reliable and can be effective for analyzing sheet metal formability, in early vehicle development phases.
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AUTOMOTIVE FORMABILITY SIMULATION PROCESS FOR EARLY DESIGN PHASES
EL-SAYED J.,KIM H.,FRUTIGER R.,LIU W. The Korean Society of Automotive Engineers 2005 International journal of automotive technology Vol.6 No.3
Formability simulation of automotive panels at early design phases can reduce product and tooling development time and cost. However, for the simulation to be effective in leading the design process, fast and reliable results should be achieved with limited design definition and minimum modeling effort. In this paper, nonlinear finite element analysis is used to develop an automated process for the formability simulation of automotive body panels at early design phases. Due to the limited design definition at early design phases, the automated simulation process is based on the plane strain analysis for selected number of typical sections along the panel. Therefore, an entire panel can be analyzed with few sections. The state of plane strain can be easily induced, during simulation through symmetry and applied boundary conditions that simplify the modeling process. To study the reliability and effectiveness of the developed simulation process, the analytical results are compared with measured results of production automotive body side panels. The comparison demonstrates that the developed simulation process is reliable and can be effective for analyzing sheet metal formability, in early vehicle development phases.
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A water treatment case study for quantifying model performance with multilevel fl ow modeling
Emil K. Nielsen,Mads V. Bram,Jerome Frutiger,Gürkan Sin,Morten Lind 한국원자력학회 2018 Nuclear Engineering and Technology Vol.50 No.4
Decision support systems are a key focus of research on developing control rooms to aid operators inmaking reliable decisions and reducing incidents caused by human errors. For this purpose, models ofcomplex systems can be developed to diagnose causes or consequences for specific alarms. Modelsapplied in safety systems of complex and safety-critical systems require rigorous and reliable modelbuilding and testing. Multilevel flow modeling is a qualitative and discrete method for diagnosing faultsand has previously only been validated by subjective and qualitative means. To ensure reliability duringoperation, this work aims to synthesize a procedure to measure model performance according todiagnostic requirements. A simple procedure is proposed for validating and evaluating the concept ofmultilevel flow modeling. For this purpose, expert statements, dynamic process simulations, and pilotplant experiments are used for validation of simple multilevel flow modeling models of a hydrocycloneunit for oil removal from produced water.
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