Vulnerability for autism traits in boys and men with an extra X chromosome (47,XXY): The mediating role of cognitive flexibility

► A third-order finite element representation for dense wire packings is given. ► Densely packed contacting wires require explicit integration in time for efficiency. ► Different ellipsoidal cavities are packed, revealing different energetics. ► Oblate and scalene packings are energetically preferable to spheres and prolates.