A Study on Mode of Collapse of Metallic Shells Having Combined Tube-Frusta Geometry Subjected to Axial Compression
The present paper deals with the experimental and
computational study of axial collapse of the aluminum metallic shells
having combined tube-frusta geometry between two parallel plates.
Shells were having bottom two third lengths as frusta and remaining
top one third lengths as tube. Shells were compressed to recognize
their modes of collapse and associated energy absorption capability.
An axisymmetric Finite Element computational model of collapse
process is presented and analysed, using a non-linear FE code
FORGE2. Six noded isoparametric triangular elements were used to
discretize the deforming shell. The material of the shells was
idealized as rigid visco-plastic. To validate the computational model
experimental and computed results of the deformed shapes and their
corresponding load-compression and energy-compression curves
were compared. With the help of the obtained results progress of the
axisymmetric mode of collapse has been presented, analysed and
discussed.
[1] Johnson W and Reid SR. (1978) "Metallic energy dissipating systems."
Appl Mech Rev; 31:277-88.
[2] Postlethwaite HE and Mills B. (1970) "Use of collapseible structural
elements as impact isolators with special reference to automotive
applications." J Strain Anal; 5: 58-73.
[3] Mamalis AG and Johnson W. (1983) "The quasi-static crumpling of
thin-walled circular cylinders and frusta under axial compression." Int J
Mech Sci; 25: 713-32.
[4] Mamalis AG, Johnson W and Vigilant GL. (1984) "The crumbling of
steel thin-walled tubes and frusta under axial compression at elevated
strain-rate: some experimental results." Int J Mech Sci;26:537-47.
[5] Mamalis AG, Manolakos DE, Saigal S, Viegelahn G and Johnson W.
(1986) "Extensible plastic collapse of thin-wall frusta as energy
absorbers." Int J Mech Sci; 28: 219-29.
[6] Mamalis AG, Manolakos DE, Viegelahn GL and Johnson W. (1988)
"The modeling of the progressive extensible plastic collapse of thin-wall
shells." Int J Mech Sci; 30: 249-61.
[7] Alghamdi AAA. (1991) "Design of simple collapsible energy absorber."
MSc thesis. College of engineering, King Abdulaziz University, Jeddah,
Saudi Arabia.
[8] Aljawi AAN, Alghamdi AAA.( 1999) "Investigation of axially
compressed frusta as impact energy absorbers." In: Gaul L, Brebbia AA,
editors. Computational methods in contact mechanics IV. Southampton:
WIT Press; p. 431-43.
[9] Aljawi AAN, Alghamdi AAA. (2000) "Inversion of frusta as impact
energy absorbers." In: Hassan MF, Megahed SM, editors. Current
advances in mechanical design and production VII. New York:
Pergamon Press; p. 511-9.
[10] Alghamdi AAA, Aljawi AAN, Abu-Mansour TMN, Mazi RAA. (2000)
"Axial crushing of frusta between two parallel plates." In: Zhao XL,
Grzebieta RH, editors. Structural failure and plasticity. New York:
Pergamon Press;. p. 545-50.
[11] Alghamdi AAA, Aljawi AAN, Abu-Mansour TMN. (2002) "Modes of
axial collapse of unconstrained capped frusta." Int J Mech Sci; 44:
1145-61.
[12] El-Sobky H, Singace AA, Petsios M. (2001) "Mode of collapse and
energy absorption characteristics of constrained frusta under axial
impact loading." Int J Mech Sci; 43: 743-57.
[13] Gupta N. K. and Venkatesh (2007) "Experimental and numerical
studies of impact axial compression of thin-walled conical shells"
International Journal of Impact Engineering.
[14] Gupta P. K. and Gupta N. K. (2006) "Computational and experimental
studies of crushing of metallic hemispherical shells" Archive of Applied
Mechanics 76: 511-524
[15] Gupta P. K. and Gupta N. K. (2006) "An experimental and
computational study of crushing of metallic hemispherical shells
between two rigid flat platens" Journal of Strain Analysis for Engg.
Design Vol. 41, No. 6, pp 453-466.
[16] Gupta P.K. (2008) "A study on mode of collapse of varying wall
thickness metallic frusta subjected to axial compression" Thin Wall
Struct; 36: 169-79.
[17] FORGE2. (1996) Finite element analysis code for metal forming
problems version 2.5, cemef, sofia Antipolis, France 1996.
[1] Johnson W and Reid SR. (1978) "Metallic energy dissipating systems."
Appl Mech Rev; 31:277-88.
[2] Postlethwaite HE and Mills B. (1970) "Use of collapseible structural
elements as impact isolators with special reference to automotive
applications." J Strain Anal; 5: 58-73.
[3] Mamalis AG and Johnson W. (1983) "The quasi-static crumpling of
thin-walled circular cylinders and frusta under axial compression." Int J
Mech Sci; 25: 713-32.
[4] Mamalis AG, Johnson W and Vigilant GL. (1984) "The crumbling of
steel thin-walled tubes and frusta under axial compression at elevated
strain-rate: some experimental results." Int J Mech Sci;26:537-47.
[5] Mamalis AG, Manolakos DE, Saigal S, Viegelahn G and Johnson W.
(1986) "Extensible plastic collapse of thin-wall frusta as energy
absorbers." Int J Mech Sci; 28: 219-29.
[6] Mamalis AG, Manolakos DE, Viegelahn GL and Johnson W. (1988)
"The modeling of the progressive extensible plastic collapse of thin-wall
shells." Int J Mech Sci; 30: 249-61.
[7] Alghamdi AAA. (1991) "Design of simple collapsible energy absorber."
MSc thesis. College of engineering, King Abdulaziz University, Jeddah,
Saudi Arabia.
[8] Aljawi AAN, Alghamdi AAA.( 1999) "Investigation of axially
compressed frusta as impact energy absorbers." In: Gaul L, Brebbia AA,
editors. Computational methods in contact mechanics IV. Southampton:
WIT Press; p. 431-43.
[9] Aljawi AAN, Alghamdi AAA. (2000) "Inversion of frusta as impact
energy absorbers." In: Hassan MF, Megahed SM, editors. Current
advances in mechanical design and production VII. New York:
Pergamon Press; p. 511-9.
[10] Alghamdi AAA, Aljawi AAN, Abu-Mansour TMN, Mazi RAA. (2000)
"Axial crushing of frusta between two parallel plates." In: Zhao XL,
Grzebieta RH, editors. Structural failure and plasticity. New York:
Pergamon Press;. p. 545-50.
[11] Alghamdi AAA, Aljawi AAN, Abu-Mansour TMN. (2002) "Modes of
axial collapse of unconstrained capped frusta." Int J Mech Sci; 44:
1145-61.
[12] El-Sobky H, Singace AA, Petsios M. (2001) "Mode of collapse and
energy absorption characteristics of constrained frusta under axial
impact loading." Int J Mech Sci; 43: 743-57.
[13] Gupta N. K. and Venkatesh (2007) "Experimental and numerical
studies of impact axial compression of thin-walled conical shells"
International Journal of Impact Engineering.
[14] Gupta P. K. and Gupta N. K. (2006) "Computational and experimental
studies of crushing of metallic hemispherical shells" Archive of Applied
Mechanics 76: 511-524
[15] Gupta P. K. and Gupta N. K. (2006) "An experimental and
computational study of crushing of metallic hemispherical shells
between two rigid flat platens" Journal of Strain Analysis for Engg.
Design Vol. 41, No. 6, pp 453-466.
[16] Gupta P.K. (2008) "A study on mode of collapse of varying wall
thickness metallic frusta subjected to axial compression" Thin Wall
Struct; 36: 169-79.
[17] FORGE2. (1996) Finite element analysis code for metal forming
problems version 2.5, cemef, sofia Antipolis, France 1996.
@article{"International Journal of Mechanical, Industrial and Aerospace Sciences:54484", author = "P. K. Gupta", title = "A Study on Mode of Collapse of Metallic Shells Having Combined Tube-Frusta Geometry Subjected to Axial Compression", abstract = "The present paper deals with the experimental and
computational study of axial collapse of the aluminum metallic shells
having combined tube-frusta geometry between two parallel plates.
Shells were having bottom two third lengths as frusta and remaining
top one third lengths as tube. Shells were compressed to recognize
their modes of collapse and associated energy absorption capability.
An axisymmetric Finite Element computational model of collapse
process is presented and analysed, using a non-linear FE code
FORGE2. Six noded isoparametric triangular elements were used to
discretize the deforming shell. The material of the shells was
idealized as rigid visco-plastic. To validate the computational model
experimental and computed results of the deformed shapes and their
corresponding load-compression and energy-compression curves
were compared. With the help of the obtained results progress of the
axisymmetric mode of collapse has been presented, analysed and
discussed.", keywords = "Axial compression, crashworthiness, energy
absorption, FORGE2, metallic shells.", volume = "6", number = "1", pages = "102-5", }
