MECHANICAL EFFECTS OF HEART PULSE-PROPAGATION ON A VESSEL-GRAFT SUTURE LINE STRESS

The effects of vessel joint where the both sides have different wall p roperties on the heart pulse propagation are investigated. Such a loca l disturbance can influence post-transplantion pathology and evolution of the organ inconsistence. Using a mathematical model, developed in a previous article, we perform analytical analysis and present some qu alitative and quantitative estimations. The effects of jointed vessels with different thicknesses and radii on the local concentration of th e pressure, radial wall displacement, bending moment and shear force a re analyzed in detail. In particular, it is obtained that the bending and shear stresses at a joint sharply and strongly increase in compari son with the uniform vessel ones.