Alfred Lazarus

Background

About Alfred Lazarus

Cranfield University - Individual research projects - Aerospace Structures Engineering Focal Points and areas of research - Importance of Structural weight. Obtain best preliminary structure before final design phase. Optimization routines. Automatic material assignments. Nesting the code within an optimization loop. Propose and utilize suitable validation methods on the model generated from the tool. Objectives - The project carries forward a methodology to produce a finite element mesh of a wing box. Rocket vehicle loads and airframe design,missile structures design considerations and vehicle loads acting on the airframe structure. 2.Reference aircraft - BOEING 737 - Idealized wing box structure design/modelling - Z-channel beam Stringers,C-channel beam Spars,Ribs and Skin,using different FEA methodologies - Beam element,Plate/Shell element,Solid element ( Super Structure design imposition)- FEA packages used - Strand 7,MSC Patran,Abaqus and CATIA V5 for modelling a solid Superstructure. 3.Reference Aircraft - EUROFIGTER TYPHOON - Idealized Delta Wing box Super Structure (Multi Spar Structure - Channel Beam)- Spars,Ribs and Skin ( no stringers on the wing structure)- Beam/Plate/Shell elements methodologies applied - Weight of wing structure with respect to weapon considerations ( No Hydro static load considerations applied )- FEA packages used - Strand,MSC PATRAN,ABAQUS and CATIA V5 for modelling a solid Superstructure. END RESULTS 1 - Comparison of FEA modelling methodologies,Global FEA strength analysis,Linear static,Natural frequency vibrations,Buffet loads effect,vibration on the wing structure caused to due to gust loads,Shear force,Bending moment,Optimization stations of the superstructure End results 2 - Important failure modes such as buckling,compression in stringer,shear force etc. Assured reduction in weight impact A comparative study is performed on the structural mass after iterations are done.