Modelling of the mechanical behaviour of porous materials: a new approach

• Autorzy: Cosmi F. , Di Marino F.
• Języki publikacji: EN

Abstrakty

EN

A new approach to porous materials modelling is presented. In this model, a matrix of cells contains a number of randomly distributed void cells in order to obtain the desired porosity. The system is solved by means of a recent numerical method, the Cell Method. As an application, the Young modulus of four sintered alloys is computed and the simulations show a good agreement with the experimental results reported in literature, depending on the porosity of the sintered powder and the Young modulus of the wrought material. Besides this application, the approach is promising in a wider class of problems, namely all those in which a large number of random distributed heterogeneities or voids are present.

Słowa kluczowe

EN

mechanical engineering; porous materials; modelling; cell method; sintered alloys; compression simulation

PL

mechanika; materiał porowaty; modelowanie

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Acta of Bioengineering and Biomechanics
• Rocznik: 2001
• Tom: Vol. 3, nr 2
• Strony: 55--66
• Opis fizyczny: Bibliogr. 11 poz., rys., wykr., tab.

Twórcy

autor

Cosmi F.

• Universitá di Trieste, Dipartimento di Energetica, 34127 Trieste, Italy

autor

Di Marino F.

• Universitá di Trieste, Dipartimento di Energetica, 34127 Trieste, Italy

Bibliografia

• [1] TONTI E., Formulazione finita delle equazioni di campo: Il Metoda delle Celie, Atti del XIII Convegno Italiano di Meccanica Computazionale, Brescia, Italy, 2000.
• [2] TONTI E., A Direct Discrete Formulation of Field Laws: The Cell Method, Computer Modeling in Engineering & Sciences, Vol. 2, No. 2, 2001.
• [3] MARRONE M., Computational Aspects of Cell Method in Electrodynamics, J. Electromagnetic Waves and Applications, Vol. 15, No. 3.
• [4] TONTI E., A Finite Formulation for the Wave Equation, Journal of Computational Acoustics, in printing.
• [5] NAPPI A., RAJGEU S., ZACCARIA D., A Discrete Formulation Applied to Crack Growth Problems, Proc. Meso Mechanics, 2000 Conference, Xi'an, China.
• [6] COSMI F., Dl MARINO F., A New Approach to Sintered Alloys Mechanical Behavior Modeling, Proc. of 17th Danubia Adria Symposium on Experimental Methods in Solid Mechanics, Prague, Czech Republic, 2000. ·
• [7] COSMI F., Numerical Solution of Plane Elasticity Problems with the Cell Method, Computer Modeling in Engineering & Sciences, Vol. 2, No.2, 2001.
• [8] Raux S., Continuum and Discrete Description of Elasticity,[in:] Statistical Models for the Fracture of Disordered Media, H.J. Herrmann and S. Roux (eds.), Elsevier Science Publishers B.V. (North Holland), 1990, pp. 109-113.
• [9] BERTINI L., FONTANARI V., STRAFFELLINI G., Tensile and Bending Behaviour of Sintered Alloys: Experimental Results and Modelling, Jour. of Engineering Materials and Technology, July 1998, Vol. 120,pp. 248-255.
• [10] COSMI F., Applicazione del metoda delle celle con approssimazione quadratica, Alii del XXIX Convegno Nazionale AlAS, Lucca, September 6-9, 2000.
• [11] COSMI F., Elasto-plasticitf con il metoda delle celle, Alii del XXX Convegno Nazionale AlAS, Alghero, September 12-15, 2001.