Modelling and simulation of an active fibre for cardiac muscle

We present a mathematical model describing the electro-mechanical coupling and the mechanical activity of the myofibres of the cardiac muscle and we perform the simulations for the partial differential equations describing the dynamical displacement of a onedimensional body with the resulting constitutive law. Prescribed boundary conditions describing the cardiac valves mechanisms and the arterial pressure variations are such that, by analogy, the whole model describes the electrically activated mechanical cardiac cycles.