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Archives of Metallurgy and Materials

The Journal of Institute of Metallurgy and Materials Science and Commitee on Metallurgy of Polish Academy of Sciences

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On the Reconstruction Method of Ceramic Foam Structures and the Methodology of Young Modulus Determination

M. Nowak
  • INSTITUTE OF FUNDAMENTAL TECHNOLOGICAL RESEARCH, POLISH ACADEMY OF SCIENCES, A. PAWINSKIEGO 5B, 02-106 WARSAW, POLAND
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
/ Z. Nowak
  • INSTITUTE OF FUNDAMENTAL TECHNOLOGICAL RESEARCH, POLISH ACADEMY OF SCIENCES, A. PAWINSKIEGO 5B, 02-106 WARSAW, POLAND
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
/ R.B. Pęcherski
  • INSTITUTE OF FUNDAMENTAL TECHNOLOGICAL RESEARCH, POLISH ACADEMY OF SCIENCES, A. PAWINSKIEGO 5B, 02-106 WARSAW, POLAND
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
/ M. Potoczek / R.E. Śliwa
Published Online: 2013-12-31 | DOI: https://doi.org/10.2478/amm-2013-0154

Abstract

In the present paper a finite element model was used to investigate the mechanical properties such as Young’s modulus of open-cell ceramic foam. Finite element discretization was derived from real foam specimen by computer tomography images. The generated 3D geometry of the ceramic foam was used to simulate deformation process under compression. The own numerical procedure was developed to control finite element mesh density by changing the element size. Several numerical simulations of compression test have been carried out using commercial finite element code ABAQUS. The size of the ceramic specimen and the density of finite element mesh were examined. The influence of type and size of finite element on the value of Young’s modulus was studied, as well. The obtained numerical results have been compared with the results of experimental investigations carried out by Ortega [11]. It is shown that numerical results are in close agreement with experiment. It appears also that the dependency of Young’s modulus of ceramic foam on density of finite element mesh cannot be ignored.

Streszczenie

W pracy przedstawiono metode okreslania własnosci mechanicznych np. modułu Younga porowatych pianek ceramicznych o otwartych komórkach. Wykorzystujac obrazy z tomografii komputerowej rzeczywistej struktury pianki otrzymano siatke elementów skonczonych. Przestrzenny obraz geometrii pianki wykorzystano do symulacji numerycznej procesu deformacji w próbie sciskania. Opracowano własna procedure numeryczna do generowania elementów skonczonych o róznej wielkosci i kontroli gestosci siatki elementów. Przeprowadzono szereg symulacji numerycznych procesu sciskania pianek z wykorzystaniem programu elementów skonczonych ABAQUS. Ustalono wpływ rodzaju i wielkosci elementów skonczonych jak równiez wielkosci samej próbki na wartosc modułu Younga wyliczonego dla próby jednoosiowego sciskania. Otrzymane numerycznie wartosci modułów Younga porównano z wartosciami z doswiadczen opublikowanych w pracy Ortegi [11]. Otrzymane rezultaty z symulacji numerycznych sa w dobrej zgodnosci z doswiadczeniem. Ustalono, ze wartosci modułu Younga dla porowatych pianek ceramicznych zalezy od gestosci siatki elementów skonczonych i nie moze byc pomijana.

Keywords: foams; 3D image analysis; cellular ceramics; FE modeling; porous alumina; mechanical properties

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About the article

Published Online: 2013-12-31

Published in Print: 2013-12-01


Citation Information: Archives of Metallurgy and Materials, ISSN (Online) 2300-1909, DOI: https://doi.org/10.2478/amm-2013-0154.

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