@inproceedings{0b2f495a15c44123a4dfdc0131a3c95f,
title = "Identification of elastic/visco-plastic material constants under impact loading",
abstract = "A numerical simulation is performed to identify the material parameters of an elastic/visco-plastic material under tensile impact loading. The identification is based on an inverse analysis using the Kaiman filter technique and the finite element method. The input data to the inverse analysis are the time histories of the strains on specimens. The measurement errors can be treated reasonably by the Kaiman filter technique, and the finite element method enables us to employ arbitrarily shaped specimens. Notched specimens are employed to obtain high strain rates at the notch root. It is found that an additional test under a relatively low strain rate is needed together with a test under a high strain rate to increase the accuracy of identification. The optimum strain rate in the additional test is determined by minimizing the largest eigen value of the covariance matrix of the estimated parameters.",
author = "S. Aoki and K. Amaya and T. Noguchi and P. St{\aa}hle and K.G. Sundin",
note = "Aoki, S Amaya, K Noguchi, T Stahle, P Sundin, KG IUTAM Symposium on Field Analyses for Determination of Material Parameters - Experimental and Numerical Aspects Jul 31-aug 04, 2000 Kiruna, sweden Int Union Theoret & Appl Mech, Volvo Aero Corp Sweden, Knowledge Fdn Stahle, Per/J-3590-2014 0925-0042; IUTAM Symposium on Field Analyses for Determination of Material Parameters - Experimental and Numerical Aspects ; Conference date: 31-07-2000 Through 04-08-2000",
year = "2003",
doi = "10.1007/978-94-010-0109-0_8",
language = "English",
isbn = "1-4020-1283-7",
volume = "109",
series = "Solid Mechanics and its Applications",
publisher = "Springer",
pages = "63--80",
editor = "P. St{\aa}hle and Sundin, {K. G.}",
booktitle = "IUTAM Symposium on Field Analyses For Determination of Materials Parameters - Experimental and Numerical Aspects",
address = "Germany",
}