Characterization of polymeric foams under multi-axial static and dynamic loading

Isaac M. Daniel; Jeong Min Cho

doi:10.1007/978-1-4419-8228-5_18

Characterization of polymeric foams under multi-axial static and dynamic loading

Isaac M. Daniel^*, Jeong Min Cho

^*Corresponding author for this work

Civil and Environmental Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

1 Scopus citations

Abstract

An orthotopic polymeric foam with transverse isotropy (Divinycell H250) used in composite sandwich structures was characterized under multi-axial quasi-static and dynamic loading. Quasi-static tests were conducted along principal material axes as well as along off-axis directions under tension, compression, and shear. An optimum specimen aspect ratio of 10 was selected based on finite element analysis. Stress-controlled and strain-controlled experiments were conducted. The former yielded engineering material constants such as Young's and shear moduli and Poisson's ratios; the latter yielded mathematical stiffness constants, i. e., C _ij. Intermediate strain rate tests were conducted in a servo-hydraulic machine. High strain rate tests were conducted using a split Hopkinson Pressure Bar system built for the purpose. This SHPB system was made of polymeric (polycarbonate) bars. The polycarbonate material has an impedance that is closer to that of foam than metals. The system was analyzed and calibrated to account for the viscoelastic response of its bars. Material properties of the foam were obtained at three strain rates, quasi-static (10 ^-4s ^-1), intermediate (1 s ^-1), and high (10 ³s ^-1) strain rates.

Original language	English (US)
Title of host publication	Dynamic Behavior of Materials - Proceedings of the 2010 Annual Conference on Experimental and Applied Mechanics
Publisher	Springer New York LLC
Pages	121-129
Number of pages	9
ISBN (Print)	9781441982278
DOIs	https://doi.org/10.1007/978-1-4419-8228-5_18
State	Published - 2011

Publication series

Name	Conference Proceedings of the Society for Experimental Mechanics Series
Volume	1
ISSN (Print)	2191-5644
ISSN (Electronic)	2191-5652

Funding

This research was partially supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (NRF-2013R1A1A2012173), and partially by the National Research Foundation of Korea (NRF) grant funded by the Korea Government (MSIP) through GCRC-SOP (No. 2011-0030013).

ASJC Scopus subject areas

General Engineering
Computational Mechanics
Mechanical Engineering

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10.1007/978-1-4419-8228-5_18

Cite this

Daniel, I. M., & Cho, J. M. (2011). Characterization of polymeric foams under multi-axial static and dynamic loading. In Dynamic Behavior of Materials - Proceedings of the 2010 Annual Conference on Experimental and Applied Mechanics (pp. 121-129). (Conference Proceedings of the Society for Experimental Mechanics Series; Vol. 1). Springer New York LLC. https://doi.org/10.1007/978-1-4419-8228-5_18

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title = "Characterization of polymeric foams under multi-axial static and dynamic loading",

abstract = "An orthotopic polymeric foam with transverse isotropy (Divinycell H250) used in composite sandwich structures was characterized under multi-axial quasi-static and dynamic loading. Quasi-static tests were conducted along principal material axes as well as along off-axis directions under tension, compression, and shear. An optimum specimen aspect ratio of 10 was selected based on finite element analysis. Stress-controlled and strain-controlled experiments were conducted. The former yielded engineering material constants such as Young's and shear moduli and Poisson's ratios; the latter yielded mathematical stiffness constants, i. e., C ij. Intermediate strain rate tests were conducted in a servo-hydraulic machine. High strain rate tests were conducted using a split Hopkinson Pressure Bar system built for the purpose. This SHPB system was made of polymeric (polycarbonate) bars. The polycarbonate material has an impedance that is closer to that of foam than metals. The system was analyzed and calibrated to account for the viscoelastic response of its bars. Material properties of the foam were obtained at three strain rates, quasi-static (10 -4s -1), intermediate (1 s -1), and high (10 3s -1) strain rates.",

author = "Daniel, {Isaac M.} and Cho, {Jeong Min}",

note = "Funding Information: This research was partially supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (NRF-2013R1A1A2012173), and partially by the National Research Foundation of Korea (NRF) grant funded by the Korea Government (MSIP) through GCRC-SOP (No. 2011-0030013).",

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doi = "10.1007/978-1-4419-8228-5_18",

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isbn = "9781441982278",

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Daniel, IM & Cho, JM 2011, Characterization of polymeric foams under multi-axial static and dynamic loading. in Dynamic Behavior of Materials - Proceedings of the 2010 Annual Conference on Experimental and Applied Mechanics. Conference Proceedings of the Society for Experimental Mechanics Series, vol. 1, Springer New York LLC, pp. 121-129. https://doi.org/10.1007/978-1-4419-8228-5_18

Characterization of polymeric foams under multi-axial static and dynamic loading. / Daniel, Isaac M.; Cho, Jeong Min.
Dynamic Behavior of Materials - Proceedings of the 2010 Annual Conference on Experimental and Applied Mechanics. Springer New York LLC, 2011. p. 121-129 (Conference Proceedings of the Society for Experimental Mechanics Series; Vol. 1).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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AU - Daniel, Isaac M.

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N1 - Funding Information: This research was partially supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (NRF-2013R1A1A2012173), and partially by the National Research Foundation of Korea (NRF) grant funded by the Korea Government (MSIP) through GCRC-SOP (No. 2011-0030013).

PY - 2011

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N2 - An orthotopic polymeric foam with transverse isotropy (Divinycell H250) used in composite sandwich structures was characterized under multi-axial quasi-static and dynamic loading. Quasi-static tests were conducted along principal material axes as well as along off-axis directions under tension, compression, and shear. An optimum specimen aspect ratio of 10 was selected based on finite element analysis. Stress-controlled and strain-controlled experiments were conducted. The former yielded engineering material constants such as Young's and shear moduli and Poisson's ratios; the latter yielded mathematical stiffness constants, i. e., C ij. Intermediate strain rate tests were conducted in a servo-hydraulic machine. High strain rate tests were conducted using a split Hopkinson Pressure Bar system built for the purpose. This SHPB system was made of polymeric (polycarbonate) bars. The polycarbonate material has an impedance that is closer to that of foam than metals. The system was analyzed and calibrated to account for the viscoelastic response of its bars. Material properties of the foam were obtained at three strain rates, quasi-static (10 -4s -1), intermediate (1 s -1), and high (10 3s -1) strain rates.

AB - An orthotopic polymeric foam with transverse isotropy (Divinycell H250) used in composite sandwich structures was characterized under multi-axial quasi-static and dynamic loading. Quasi-static tests were conducted along principal material axes as well as along off-axis directions under tension, compression, and shear. An optimum specimen aspect ratio of 10 was selected based on finite element analysis. Stress-controlled and strain-controlled experiments were conducted. The former yielded engineering material constants such as Young's and shear moduli and Poisson's ratios; the latter yielded mathematical stiffness constants, i. e., C ij. Intermediate strain rate tests were conducted in a servo-hydraulic machine. High strain rate tests were conducted using a split Hopkinson Pressure Bar system built for the purpose. This SHPB system was made of polymeric (polycarbonate) bars. The polycarbonate material has an impedance that is closer to that of foam than metals. The system was analyzed and calibrated to account for the viscoelastic response of its bars. Material properties of the foam were obtained at three strain rates, quasi-static (10 -4s -1), intermediate (1 s -1), and high (10 3s -1) strain rates.

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Characterization of polymeric foams under multi-axial static and dynamic loading

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