Effective Constitutive Equations for Porous Elastic Materials at Finite Strains and Superimposed Finite Strains

2003 ◽  
Vol 70 (6) ◽  
pp. 809-816 ◽  
Author(s):  
V. A. Levin ◽  
K. M. Zingermann
Keyword(s):  
Plane Strain ◽  
Constitutive Equations ◽  
Rigid Motion ◽  
Finite Deformations ◽  
Finite Strains ◽  
Effective Characteristics ◽  
Elastic Materials ◽  
Preliminary Loading ◽  
Nonlinear Elastic

A method is developed for derivation of effective constitutive equations for porous nonlinear-elastic materials undergoing finite strains. It is shown that the effective constitutive equations that are derived using the proposed approach do not change if a rigid motion is superimposed on the deformation. An approach is proposed for the computation of effective characteristics for nonlinear-elastic materials in which pores are originated after a preliminary loading. This approach is based on the theory of superimposed finite deformations. The results of computations are presented for plane strain, when pores are distributed uniformly.

Effective Elastic Properties of Porous Materials With Randomly Dispersed Pores: Finite Deformation

2000 ◽  
Vol 67 (4) ◽  
pp. 667-670 ◽  
Author(s):  
V. A. Levin ◽  
V. V. Lokhin ◽  
K. M. Zingerman
Keyword(s):  
Finite Deformation ◽  
Constitutive Equations ◽  
Effective Properties ◽  
Matrix Material ◽  
Finite Deformations ◽  
Cylindrical Shape ◽  
Ensemble Averaging ◽  
Elastic Materials ◽  
The Matrix ◽  
Nonlinear Elastic

A method is developed for the analysis of the effective properties of porous nonlinear elastic materials with randomly distributed interacting pores under finite deformations. The method is based on the solution of the problems of nonlinear elasticity for a representative region using Signorini’s expansion. The constitutive equations for the matrix material and for the comparison material are written in a form corresponding to Murnaghan’s potential. The technique, which is used for ensemble averaging, approximately simulates the uniform distribution of pores. The computations are performed for plane strain, when pores are equal in size, and a circular cylindrical shape in the undeformed state is assumed. [S0021-8936(00)01802-X]

scholarly journals Plane-strain waves in nonlinear elastic solids with softening

Wave Motion ◽  
2019 ◽  
Vol 89 ◽  
pp. 65-78 ◽  
Author(s):  
Harold Berjamin ◽  
Bruno Lombard ◽  
Guillaume Chiavassa ◽  
Nicolas Favrie
Keyword(s):  
Plane Strain ◽  
Elastic Solids ◽  
Strain Waves ◽  
Nonlinear Elastic
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