The paper presents the studies realized a similar biomechanical system composed by neck, head and muscles complementary to the human neck. The model was defined starting with a real human object and which was made CT, after in a CAD environment, The main movements (axial rotation, lateral bending, and flexion-extension) has been obtained behavior based on date, tables or diagrams. The virtual model composed of the neck, head andmuscles, which was included in a complex system (similar with a car system), and a lot of virtual simulations car crash tests were made. As well is studied the behavior of shape memory springs, with which has been achieved anatomical-functional similarity with those of a human subject, comparing them in the end with the ones determined virtually with anatomical-myographic studies.