Analysis Of Sandwiched Polyurethane Composite Steel Tube Of Crashworthiness

With the development of the world economy, resource crisis become a problem manycountries have to face, steel has been applied to various engineering fields and the demandof it is increasing year by year. since steel is a limited resource，the demand of it is certain tobeyond peoples’ ability. Study of composite materials has become the future direction ofsustainable development.It has unique advantages comparing with traditional material.Thispaper mainly did the new composite steel polyurethane composite pipe crashworthinessresearch. Use Numerical simulation of nonlinear finite element software to build compositetube model and condition of the pipe model, from the collision force performance andcollision energy in the process of change of steel polyurethane composite pipe and itsapplication in K node tube and jacket platform collision resistant performanceresearch.Content polyurethane composite pipe unique crashworthiness.The main contents are as follows:The first summary of steel polyurethane composite pipe collision research status at homeand abroad and the trend and impact of offshore jacket platform.Study and introduction ofsteel polyurethane composite pipe is involved in the collision nonlinear finite elementtheory and the theory of collision.The polyurethane material mechanical test and steelpolyurethane composite pipe mechanical properties test reference related literature andreference, the thesis in the collision of polyurethane material parameters and inANSYS/LS-DYNA nonlinear finite element software composite coupling assumption.Second to establish a single collision contrast model establishment of finite elementmodel of quality steel and steel polyurethane composite material tube model and rigid bowmodel.That sandwich polyurethane composite pipe the collision resistant performance isstronger than steel.Sandwich material polyurethane material improves the sandwichcomposite pipe material plasticity, reducing impact force.Polyurethane material in thecollision energy absorbing large amounts of energy.Third.the establishment of K node steel pipe Limited model and quality K nodecomposite pipe finite element model and finite element model of rigid bow.Draw K joints inthe collision process under the collision force and large deformation.K node composite tubewill impact more energy through the pipe vibration dissipation structure.To reduce theenergy consumption by material.The rigid collision ball along30degrees to45degreesoblique collision of K node composite pipe crashworthiness is comparatively good.Andcomposite tubular K joints with non node collision collision crashworthiness performance analysis.Fourth.steel jacket platform establishment of finite element model and composite jacketoffshore platform model and rigid hull finite element model, drawn either caught or obliquecollision, from the overall analysis, composite jacket platform crashworthiness is strongerthan steel jacket platform.From the partial analysis, string tube energy greater than the othertube energy dissipation.Sandwich polyurethane composite material tube energyconsumption accounted for40per cent more, fully embodies the polyurethane materialperformance of absorption and sandwich composite pipe in offshore platform advantagesand composite jacket platform with a node node collision collision crashworthinessperformance analysis.