Adapting a Mass-Spring system to energy density function describing myocardial mechanics

摘要

In this work, a method to adapt a Mass-Spring system to the energy density function describing myocardial mechanics, by using continuum mechanics methods is presented. For the development of a computer model of the myocardial mechanics, a modified Mass-Spring system proposed by Bour-guignon [1] is used. This system discretized the simulated object into voxels arranged in a hexahedral mesh. Suitable spring functions for this system were derived analytically from energy density function describing the hyperelastic properties of heart tissue. In this paper two different energy functions, proposed by Hunter et al. [2] and Guccione et al. [3] are used. To evaluate the passive mechanical behavior of the Mass-Spring system, different deformation experiments are simulated and the results are discussed.