2002 (Backfills for previous years) / DB reference years
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Author Dipl.-Ing. Michael Ebenhoch, Institute of Machine Components, Universitat Stuttgart, Pfaffenwaldring 9, 70569 Stuttgart Germany; Tel 49711-685-6153; Fax 49711-685-6319; Ebenoch@ima.uni-stuttgart.de
Source Rapid Prototyping & Manufacturing 2000
Abstract Besides the cost of development the factor of "Time" is getting more and more important. Getting new products in the market early guarantees economic and price advantages which cannot be reached by any other action.
The project "Innovative Prototyping" analyzes new ways to use RP Parts within Product Development to reduce development time. One area is the Use of direct or indirect produced parts for the Verification of Finite Element Analysis in the early state of Product Development, because the Finite Element Analysis (FEA) does not offer a direct possibility to control the calculated results. Material Research showed that FDM parts are right for this use because of its constant Material Properties after the build process. We did Parameter Variations to find Material Properties with the lowest Anisotropy (Elastic, Tensile and Bending)- and Shear-Modulus, (Time and Temperature performance) within and between the Slices of FDM-ABS-parts. The results are shown in graphs (Material Properties) . To show the appplication of Rapid Stress Validation examples like Pressure Patterns of Gear Box Sealings, scanned Stresses in special Gear Wheels for Oil Pumps by Thermal Stress Analysis (TSA) are shown. Thermoelastic Stress Analysi s is based on detection of a temperature change due to a change in stress conditions. Based on the known material properties the measured temperature changes of the FDM, Prototypes can be transformed directly into the stresses of the real part. XX