Seminar: Robust Heuristic GP Optimization for Synthesis Realization and Diagnosis

Department of Mechanical and Aerospace Engineering Seminar

ROBUST HEURISTIC GP OPTIMIZATION FOR SYNTHESIS REALIZATION AND
DIAGNOSES

Date and Time: Friday, Nov. 16, 2:15-3:10 p.m., Watson Theatre,
Watson Hall

by Sayed M. Metwalli, PhD., PE, Life Fellow ASME, Fellow SME
Professor Emeritus, Mechanical Design and Production Department
Faculty of Engineering, Cairo University, Egypt

ABSTRACT

A developed novel optimization process that can be used for the true synthesis and diagnoses of mechanical systems is presented. One sample application is the design optimization of space frames. A finite element program is devised to synthesize 3D-space frames and assist in achieving its variable topology design and optimization. A Midi-Bus frame is modeled with beam element members and simulated for a model of severe road loading condition. The optimization effectively uses the devised Heuristic Gradient Projection (HGP) technique to synthesize the Midi-Bus frame. Results indicate a striking improvement over available designs and remarkably faster convergence over other design and optimization techniques. The developed synthesis methodology is also applied to other designs as a tailored optimization paradigm for a better theory of design realization. In rolling bearing optimization the convergence of the HGP is in five iterations against selected 500 generations of Genetic Algorithm. A new paradigm for using finite elements is also devised
where some modifications are applied in FE formulation in order to affect the HGP method. The estimation of disturbances generated due to inherent system anomaly, faults or flaws has also been achieved through the utilization of state space formulation and HGP multi-optimization procedure.

Contact Person: Kathy Datthyn-Madigan, Mechanical and Aerospace
Engineering Dept., 443-4367, kjdatthy@syr.edu