SOME EXPERIMENTS WITH SAND-FILLED FLEXIBLE TUBES

Flexural Behavior of GFRP Tubes Filled with Magnetically Driven Concrete

Experimental investigation of GFRP (glass fiber reinforced polymer) tubes that were filled with magnetically driven concrete was carried out to study the flexural behavior of specimens under bending. Specimens having different cross section and lengths were tested. The test specimens were fabricated by filling magnetically driven concrete into the GFRP tubes and the concrete was vibrated using ...

Multi-objective Crashworthiness Optimization of the Aluminum Foam-filled Tubes

In order to reduce both the weight of vehicles and the damage of occupants in a crash event simultaneously, it is necessary to perform a multi-objective optimization of the automotive energy absorbing components. In this paper, axial impact crushing behavior of the aluminum foam-filled thin-walled tubes are studied by the finite element method using commercial software ABAQUS. Comparison of the...

Some Experiments with Static Tubes at Transonic Speeds in a Slotted-Wall Wind Tunnel

Multi-response Optimization of Grooved Circular Tubes Filled with Polyurethane Foam as Energy Absorber

The main objective of this research is to improvethe design and performance of the polyurethane foam-filled thin-walled aluminum grooved circular tubes using multi-response optimization (MRO) technique. The tubes are shaped with the inner and the outer circular grooves at different positions along the axis. For this aim, several numerical simulations using ABAQUS finite element explicit code ar...

Some Experiments with Undeenedness

We distinguish two kinds of undeenedness: undeenedness in existence versus undeenedness in information. We give several applications of the rst kind: a rst order formulation of the untyped lambda calculus and a Zermelo-Fraenkel style theory for partial functions which is equally powerful as ZF-Set Theory. We add the rst kind of unde-nedness to a typed lambda calculus, and show that identifying ...