Plastic collapse of thin-walled frusta and egg-box material under shear and normal loading

Alfred Rotimi Akisanya; N. A. Fleck

doi:10.1016/j.ijmecsci.2006.01.020

Plastic collapse of thin-walled frusta and egg-box material under shear and normal loading

Alfred Rotimi Akisanya, N. A. Fleck

Research output: Contribution to journal › Article › peer-review

19 Citations (Scopus)

Abstract

The quasi-static plastic collapse of thin-walled frusta is determined for combined shear and out-of-plane compression. Experiments and finite element calculations are conducted on conical metallic frusta with semi-included cone angles of 30 degrees and 45 degrees to determine the shear collapse response. Additional finite element predictions are given for compressive loading, and for combined shear-compressive loading. The dependence of strength and energy absorption upon geometry is explored. The predicted response of an array of conical frusta is used to give the overall response of an egg-box material sandwiched between rigid face sheets. Scaling laws are determined for the stiffness and strength as a function of relative density of the egg-box material. (c) 2006 Elsevier Ltd. All rights reserved.

Original language	English
Pages (from-to)	799-808
Number of pages	9
Journal	International Journal of Mechanical Sciences
Volume	48
DOIs	https://doi.org/10.1016/j.ijmecsci.2006.01.020
Publication status	Published - 2006

Keywords

plastic collapse
energy absorption
egg-box material
conical frusta
IMPACT ENERGY ABSORBERS
CYLINDRICAL-SHELLS
AXIAL-COMPRESSION
TUBES
ABSORPTION

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10.1016/j.ijmecsci.2006.01.020

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title = "Plastic collapse of thin-walled frusta and egg-box material under shear and normal loading",

abstract = "The quasi-static plastic collapse of thin-walled frusta is determined for combined shear and out-of-plane compression. Experiments and finite element calculations are conducted on conical metallic frusta with semi-included cone angles of 30 degrees and 45 degrees to determine the shear collapse response. Additional finite element predictions are given for compressive loading, and for combined shear-compressive loading. The dependence of strength and energy absorption upon geometry is explored. The predicted response of an array of conical frusta is used to give the overall response of an egg-box material sandwiched between rigid face sheets. Scaling laws are determined for the stiffness and strength as a function of relative density of the egg-box material. (c) 2006 Elsevier Ltd. All rights reserved.",

keywords = "plastic collapse, energy absorption, egg-box material, conical frusta, IMPACT ENERGY ABSORBERS, CYLINDRICAL-SHELLS, AXIAL-COMPRESSION, TUBES, ABSORPTION",

author = "Akisanya, {Alfred Rotimi} and Fleck, {N. A.}",

year = "2006",

doi = "10.1016/j.ijmecsci.2006.01.020",

language = "English",

volume = "48",

pages = "799--808",

journal = "International Journal of Mechanical Sciences",

issn = "0020-7403",

publisher = "Elsevier",

}

TY - JOUR

T1 - Plastic collapse of thin-walled frusta and egg-box material under shear and normal loading

AU - Akisanya, Alfred Rotimi

AU - Fleck, N. A.

PY - 2006

Y1 - 2006

N2 - The quasi-static plastic collapse of thin-walled frusta is determined for combined shear and out-of-plane compression. Experiments and finite element calculations are conducted on conical metallic frusta with semi-included cone angles of 30 degrees and 45 degrees to determine the shear collapse response. Additional finite element predictions are given for compressive loading, and for combined shear-compressive loading. The dependence of strength and energy absorption upon geometry is explored. The predicted response of an array of conical frusta is used to give the overall response of an egg-box material sandwiched between rigid face sheets. Scaling laws are determined for the stiffness and strength as a function of relative density of the egg-box material. (c) 2006 Elsevier Ltd. All rights reserved.

AB - The quasi-static plastic collapse of thin-walled frusta is determined for combined shear and out-of-plane compression. Experiments and finite element calculations are conducted on conical metallic frusta with semi-included cone angles of 30 degrees and 45 degrees to determine the shear collapse response. Additional finite element predictions are given for compressive loading, and for combined shear-compressive loading. The dependence of strength and energy absorption upon geometry is explored. The predicted response of an array of conical frusta is used to give the overall response of an egg-box material sandwiched between rigid face sheets. Scaling laws are determined for the stiffness and strength as a function of relative density of the egg-box material. (c) 2006 Elsevier Ltd. All rights reserved.

KW - plastic collapse

KW - energy absorption

KW - egg-box material

KW - conical frusta

KW - IMPACT ENERGY ABSORBERS

KW - CYLINDRICAL-SHELLS

KW - AXIAL-COMPRESSION

KW - TUBES

KW - ABSORPTION

U2 - 10.1016/j.ijmecsci.2006.01.020

DO - 10.1016/j.ijmecsci.2006.01.020

M3 - Article

SN - 0020-7403

VL - 48

SP - 799

EP - 808

JO - International Journal of Mechanical Sciences

JF - International Journal of Mechanical Sciences

ER -

Plastic collapse of thin-walled frusta and egg-box material under shear and normal loading

Abstract

Keywords

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