10.30 Konrad Steiner - Fraunhofer ITWM.pdf

1、Accelerating and Optimization of foam production using fast and accurate digital prediction toolsDr.Dariusz Niedziela,Dr.Konrad SteinerFraunhofer ITWMFlow-and Materialsimulation Process simulation toolSimulation of Reaction Injection Molding Processes Foaming simulation of various foams(PU,soft foam

2、,rigid foam)Simulation based design of foam moulds(placement or path of injection nozzles,position of venting,inclination angle)Process design of foaming processes for acoustic or thermal insulation components,sandwich panels,seats,battery packs,cooling units,.Process design of textile-reinforced PU

3、 foam lightweight structuresOutput quantities,that are predicted in PUR foam simulations:Flow pressure and velocityDistribution of temperatureDegree of polymerizationGas volume fraction,foam densityLocal mean pore size distribution PUR foam fraction and propagation of foam front05.12.2024 Fraunhofer

4、 ITWMSeite 2Agenda:What is actual possible with FOAM process simulation?Refrigerator housingHow easy is it to simulate realistic foam processes?Automated material parameter identification Accelerating of foam simulation to resolve small details?Battery packs What is actual possible with FOAM process

5、 simulation?Refrigerator housing05.12.2024 Fraunhofer ITWMSeite 4Injection positionvents position(red squares)05.12.2024 Fraunhofer ITWMSeite 5The foaming of refrigerator parts is a demanding process that requires optimization steps regarding various factors:injected mass,injection position,number o

6、f injection points,venting positions,foam characteristicsStarting conditionsInjection:3.5kg material over 5(s)per injection position Wall temperature:45C Injected material temperature:28 C Foam density 1208 kg/m Initial pressure 1 bar Cream time 2 sProcess simulation toolExample Refrigerator housing