Identification of of elastic/visco-plastic material constants under impact loading
(2001) In Nihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A 67(653). p.1-7- Abstract
A method for identifying the material constants of an elastic/visco-plastic meterial under tensile impact loading is proposed. In this method, the Kalman filter and the finite element method are used together with a few test data. To obtain data for high strain rates, notched specimens are employed, because arbitrarily shaped specimens are available in this method. To increase the accuracy of identification, a test under a relatively low strain rate is needed in addition to a test under a high strain rate. The optimum strain rate is determined in such a way that the largest eigen value of the covariance matrix of the estimated parameters becomes minimum. A numerical simulation in performed to demonstrate the validity and usefulness of... (More)
A method for identifying the material constants of an elastic/visco-plastic meterial under tensile impact loading is proposed. In this method, the Kalman filter and the finite element method are used together with a few test data. To obtain data for high strain rates, notched specimens are employed, because arbitrarily shaped specimens are available in this method. To increase the accuracy of identification, a test under a relatively low strain rate is needed in addition to a test under a high strain rate. The optimum strain rate is determined in such a way that the largest eigen value of the covariance matrix of the estimated parameters becomes minimum. A numerical simulation in performed to demonstrate the validity and usefulness of this method.
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- author
- Aoki, Shigeru ; Amaya, Kenji ; Noguchi, Tomohiro ; Ståhle, Per LU and Sundin, Karl G.
- publishing date
- 2001-01-01
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- computational mechanics, Elastic/visco-plastic material, Finite element method, Inverse problem, Kalman filter, Material constants, Optimum strain rate, Tensile impact loading
- in
- Nihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A
- volume
- 67
- issue
- 653
- pages
- 7 pages
- publisher
- Japan Society of Mechanical Engineers
- external identifiers
-
- scopus:77949680061
- ISSN
- 0387-5008
- DOI
- 10.1299/kikaia.67.1
- language
- English
- LU publication?
- no
- id
- c4e9d6ec-e1ad-4fda-9a53-8d523925b5d4
- date added to LUP
- 2019-05-07 16:29:27
- date last changed
- 2022-01-31 19:34:23
@article{c4e9d6ec-e1ad-4fda-9a53-8d523925b5d4,
abstract = {{<p>A method for identifying the material constants of an elastic/visco-plastic meterial under tensile impact loading is proposed. In this method, the Kalman filter and the finite element method are used together with a few test data. To obtain data for high strain rates, notched specimens are employed, because arbitrarily shaped specimens are available in this method. To increase the accuracy of identification, a test under a relatively low strain rate is needed in addition to a test under a high strain rate. The optimum strain rate is determined in such a way that the largest eigen value of the covariance matrix of the estimated parameters becomes minimum. A numerical simulation in performed to demonstrate the validity and usefulness of this method.</p>}},
author = {{Aoki, Shigeru and Amaya, Kenji and Noguchi, Tomohiro and Ståhle, Per and Sundin, Karl G.}},
issn = {{0387-5008}},
keywords = {{computational mechanics; Elastic/visco-plastic material; Finite element method; Inverse problem; Kalman filter; Material constants; Optimum strain rate; Tensile impact loading}},
language = {{eng}},
month = {{01}},
number = {{653}},
pages = {{1--7}},
publisher = {{Japan Society of Mechanical Engineers}},
series = {{Nihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A}},
title = {{Identification of of elastic/visco-plastic material constants under impact loading}},
url = {{http://dx.doi.org/10.1299/kikaia.67.1}},
doi = {{10.1299/kikaia.67.1}},
volume = {{67}},
year = {{2001}},
}