题目：Topology-parametric optimization of lattice composite fuselage designs and Multipoint Approximation Method (MAM) for engineering optimization
报告人：Dianzi Liu（University of East Anglia副教授）
In recent years, environmental and economic issues force aircraft designers to minimize weight and costs to keep air transport competitive and safe. Topology optimization, a finite element based structural optimization process, is increasingly used by engineers to support the development of minimum weight structures. In my talk, topology optimization of aircraft fuselage section is performed in order to provide a scientific basis for finding a rational structural layout. The results of topology optimization suggest that the lattice layout for the barrel is an efficient design with respect to weight and structural performance. This provides a backing to the specific choice of the preliminary design concept. Following that, the investigation of the effect of the window pitch on the conceptual design is performed.
The other basic ingredient of my talk is the Multipoint Approximation Method (MAM) for engineering design optimization. Its capability to efficiently solve the medium-scale, mixed continuous-discrete engineering optimization problems is compared against GA. The potential of this metamodel based optimization technique will be demonstrated via the benchmark example of the ten-bar truss structure.
Dr Dianzi Liu is an Associate Professor in Engineering Division at the University of East Anglia (UEA), UK. In 2010, he received his PhD in Mechanical Engineering in the University of Leeds (UK) sponsored by Overseas Research Scholarship (ORS) Scheme. Dr. Liu was awarded the runner-up prize in the ISSMO-Springer Prize competition in 2009 and has published more than 30 technical papers since 2010. His current research interests include Composite Aerostructures, Simulation and Optimization Driven Designs, Implementation and Application of Optimization Techniques, and Energy Utilisation. He is a reviewer for Engineering Optimization, J. of Structural Multidisciplinary Optimization, Computers& Structures. Dr. Liu is a Member of IET, AIAA, and ISSMO. He is PI and Co-I for many projects sponsored by EPSRC, Airbus, Rolls-Royce, and EU PF7. In 2016, he was a recipient of Short-term Recruitment Program of Professional Scholars established by National Laboratory of Aerospace.