THEORETICAL AND APPLIED MECHANICS

 

TEORIJSKA I PRIMENJENA MEHANIKA  2003 Vol.30 (4), pp.311-332

 

 

Summary: 


A.Grillo, S.Federico,
G.Giaquinta, W.Herzog, G.La Rosa

 
 

 

Restoration of the symmetries broken by reversible growth in hyperelastic bodies

 

 

In this paper, we interpret the development of material inhomogeneities in continuum, hyperelastic bodies in the presence of reversible growth in terms of broken symmetries [1]. By applying Noether's Theorem [1,2,3,4], we find a set of equations yielding the fields necessary to compensate for the broken symmetry. As growth occurs, these fields provide for an instantaneously updated reference configuration of the body, and are responsible for the dynamical restoring of the body symmetries. In addition, we propose to use these compensating fields in order to generalize the definition of the transplant operator given in [5,6]. This work has been motivated by the current theoretical investigations on the biomechanical aspects of growth in articular cartilage.