Influence of Core Compressibility, Flexibility and Transverse Shear Effects on the Response of Sandwich Structures

Koovapparambil Ramunny Pradeep; Boggarappu Nageswara Rao; Sivakumar Madras Srinivasan; Krishnan Balasubramaniam; Sirajudeen Ahamed

doi:doi:10.11648/j.ajmie.20170202.14

Influence of Core Compressibility, Flexibility and Transverse Shear Effects on the Response of Sandwich Structures

Koovapparambil Ramunny Pradeep, Boggarappu Nageswara Rao, Sivakumar Madras Srinivasan, Krishnan Balasubramaniam, Sirajudeen Ahamed

Published in American Journal of Mechanical and Industrial Engineering (Volume 2, Issue 2)

Received: 15 October 2016 Accepted: 6 December 2016 Published: 21 January 2017

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Abstract

This paper examines the adequacy of first order shear deformation theory (FSDT) based layered shell finite element by comparing with 2D and 3D models without imposing any constraint on the deformation behaviour of core. The effect of core compressibility and transverse flexibility in the behaviour of sandwich beams are studied. Plane and 3D models are able to capture the higher order shear stress variation across the thickness of core, whereas classical models and layered models results in constant shear stress across the thickness of the core. Results of the finite element models indicate the necessity of shear correction factor for rigid core considering shear strain energy criteria or average shear strain criteria, whereas for soft core, the shear correction factor is unity (=1).

Published in	American Journal of Mechanical and Industrial Engineering (Volume 2, Issue 2)
DOI	10.11648/j.ajmie.20170202.14
Page(s)	81-91
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2017. Published by Science Publishing Group

Keywords

Sandwich Structures, Honeycomb Core, Skin, Finite Element Method, Zigzag Theory

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APA Style

Koovapparambil Ramunny Pradeep, Boggarappu Nageswara Rao, Sivakumar Madras Srinivasan, Krishnan Balasubramaniam, Sirajudeen Ahamed. (2017). Influence of Core Compressibility, Flexibility and Transverse Shear Effects on the Response of Sandwich Structures. American Journal of Mechanical and Industrial Engineering, 2(2), 81-91. https://doi.org/10.11648/j.ajmie.20170202.14

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ACS Style

Koovapparambil Ramunny Pradeep; Boggarappu Nageswara Rao; Sivakumar Madras Srinivasan; Krishnan Balasubramaniam; Sirajudeen Ahamed. Influence of Core Compressibility, Flexibility and Transverse Shear Effects on the Response of Sandwich Structures. Am. J. Mech. Ind. Eng. 2017, 2(2), 81-91. doi: 10.11648/j.ajmie.20170202.14

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AMA Style

Koovapparambil Ramunny Pradeep, Boggarappu Nageswara Rao, Sivakumar Madras Srinivasan, Krishnan Balasubramaniam, Sirajudeen Ahamed. Influence of Core Compressibility, Flexibility and Transverse Shear Effects on the Response of Sandwich Structures. Am J Mech Ind Eng. 2017;2(2):81-91. doi: 10.11648/j.ajmie.20170202.14

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@article{10.11648/j.ajmie.20170202.14,
  author = {Koovapparambil Ramunny Pradeep and Boggarappu Nageswara Rao and Sivakumar Madras Srinivasan and Krishnan Balasubramaniam and Sirajudeen Ahamed},
  title = {Influence of Core Compressibility, Flexibility and Transverse Shear Effects on the Response of Sandwich Structures},
  journal = {American Journal of Mechanical and Industrial Engineering},
  volume = {2},
  number = {2},
  pages = {81-91},
  doi = {10.11648/j.ajmie.20170202.14},
  url = {https://doi.org/10.11648/j.ajmie.20170202.14},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajmie.20170202.14},
  abstract = {This paper examines the adequacy of first order shear deformation theory (FSDT) based layered shell finite element by comparing with 2D and 3D models without imposing any constraint on the deformation behaviour of core. The effect of core compressibility and transverse flexibility in the behaviour of sandwich beams are studied. Plane and 3D models are able to capture the higher order shear stress variation across the thickness of core, whereas classical models and layered models results in constant shear stress across the thickness of the core. Results of the finite element models indicate the necessity of shear correction factor for rigid core considering shear strain energy criteria or average shear strain criteria, whereas for soft core, the shear correction factor is unity (=1).},
 year = {2017}
}

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TY  - JOUR
T1  - Influence of Core Compressibility, Flexibility and Transverse Shear Effects on the Response of Sandwich Structures
AU  - Koovapparambil Ramunny Pradeep
AU  - Boggarappu Nageswara Rao
AU  - Sivakumar Madras Srinivasan
AU  - Krishnan Balasubramaniam
AU  - Sirajudeen Ahamed
Y1  - 2017/01/21
PY  - 2017
N1  - https://doi.org/10.11648/j.ajmie.20170202.14
DO  - 10.11648/j.ajmie.20170202.14
T2  - American Journal of Mechanical and Industrial Engineering
JF  - American Journal of Mechanical and Industrial Engineering
JO  - American Journal of Mechanical and Industrial Engineering
SP  - 81
EP  - 91
PB  - Science Publishing Group
SN  - 2575-6060
UR  - https://doi.org/10.11648/j.ajmie.20170202.14
AB  - This paper examines the adequacy of first order shear deformation theory (FSDT) based layered shell finite element by comparing with 2D and 3D models without imposing any constraint on the deformation behaviour of core. The effect of core compressibility and transverse flexibility in the behaviour of sandwich beams are studied. Plane and 3D models are able to capture the higher order shear stress variation across the thickness of core, whereas classical models and layered models results in constant shear stress across the thickness of the core. Results of the finite element models indicate the necessity of shear correction factor for rigid core considering shear strain energy criteria or average shear strain criteria, whereas for soft core, the shear correction factor is unity (=1).
VL  - 2
IS  - 2
ER  -

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Author Information

Koovapparambil Ramunny Pradeep

Operational Launch Vehicle Team, Vikram Sarabhai Space Centre, Trivandrum, India
Boggarappu Nageswara Rao

Department of Mechanical Engineering, Koneru Lakshmaiah University, Green Fields, Vaddeswaram, Guntur, India
Sivakumar Madras Srinivasan

Department of Applied Mechanics, Indian Institute of Technology Madras, Chennai, India
Krishnan Balasubramaniam

Department of Mechanical Engineering, Indian Institute of Technology Madras, Chennai, India
Sirajudeen Ahamed

Structural Design and Engineering Group, Vikram Sarabhai Space Centre, Trivandrum, India

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Plain Text BibTeX RIS

APA Style

Koovapparambil Ramunny Pradeep, Boggarappu Nageswara Rao, Sivakumar Madras Srinivasan, Krishnan Balasubramaniam, Sirajudeen Ahamed. (2017). Influence of Core Compressibility, Flexibility and Transverse Shear Effects on the Response of Sandwich Structures. American Journal of Mechanical and Industrial Engineering, 2(2), 81-91. https://doi.org/10.11648/j.ajmie.20170202.14

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ACS Style

Koovapparambil Ramunny Pradeep; Boggarappu Nageswara Rao; Sivakumar Madras Srinivasan; Krishnan Balasubramaniam; Sirajudeen Ahamed. Influence of Core Compressibility, Flexibility and Transverse Shear Effects on the Response of Sandwich Structures. Am. J. Mech. Ind. Eng. 2017, 2(2), 81-91. doi: 10.11648/j.ajmie.20170202.14

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AMA Style

Koovapparambil Ramunny Pradeep, Boggarappu Nageswara Rao, Sivakumar Madras Srinivasan, Krishnan Balasubramaniam, Sirajudeen Ahamed. Influence of Core Compressibility, Flexibility and Transverse Shear Effects on the Response of Sandwich Structures. Am J Mech Ind Eng. 2017;2(2):81-91. doi: 10.11648/j.ajmie.20170202.14

Copy | Download

@article{10.11648/j.ajmie.20170202.14,
  author = {Koovapparambil Ramunny Pradeep and Boggarappu Nageswara Rao and Sivakumar Madras Srinivasan and Krishnan Balasubramaniam and Sirajudeen Ahamed},
  title = {Influence of Core Compressibility, Flexibility and Transverse Shear Effects on the Response of Sandwich Structures},
  journal = {American Journal of Mechanical and Industrial Engineering},
  volume = {2},
  number = {2},
  pages = {81-91},
  doi = {10.11648/j.ajmie.20170202.14},
  url = {https://doi.org/10.11648/j.ajmie.20170202.14},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajmie.20170202.14},
  abstract = {This paper examines the adequacy of first order shear deformation theory (FSDT) based layered shell finite element by comparing with 2D and 3D models without imposing any constraint on the deformation behaviour of core. The effect of core compressibility and transverse flexibility in the behaviour of sandwich beams are studied. Plane and 3D models are able to capture the higher order shear stress variation across the thickness of core, whereas classical models and layered models results in constant shear stress across the thickness of the core. Results of the finite element models indicate the necessity of shear correction factor for rigid core considering shear strain energy criteria or average shear strain criteria, whereas for soft core, the shear correction factor is unity (=1).},
 year = {2017}
}

Copy | Download

TY  - JOUR
T1  - Influence of Core Compressibility, Flexibility and Transverse Shear Effects on the Response of Sandwich Structures
AU  - Koovapparambil Ramunny Pradeep
AU  - Boggarappu Nageswara Rao
AU  - Sivakumar Madras Srinivasan
AU  - Krishnan Balasubramaniam
AU  - Sirajudeen Ahamed
Y1  - 2017/01/21
PY  - 2017
N1  - https://doi.org/10.11648/j.ajmie.20170202.14
DO  - 10.11648/j.ajmie.20170202.14
T2  - American Journal of Mechanical and Industrial Engineering
JF  - American Journal of Mechanical and Industrial Engineering
JO  - American Journal of Mechanical and Industrial Engineering
SP  - 81
EP  - 91
PB  - Science Publishing Group
SN  - 2575-6060
UR  - https://doi.org/10.11648/j.ajmie.20170202.14
AB  - This paper examines the adequacy of first order shear deformation theory (FSDT) based layered shell finite element by comparing with 2D and 3D models without imposing any constraint on the deformation behaviour of core. The effect of core compressibility and transverse flexibility in the behaviour of sandwich beams are studied. Plane and 3D models are able to capture the higher order shear stress variation across the thickness of core, whereas classical models and layered models results in constant shear stress across the thickness of the core. Results of the finite element models indicate the necessity of shear correction factor for rigid core considering shear strain energy criteria or average shear strain criteria, whereas for soft core, the shear correction factor is unity (=1).
VL  - 2
IS  - 2
ER  -

Copy | Download