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Bolt Type D

This bolt type uses solid elements for the shank, head, and nut. It should be noted that hexahedron elements are recommended to be used. It is advised to not use tetrahedron elements. This application is beneficial in that it has a full choice of material models. It also allows the bolt stresses to be calculated along the entire shank. The drawback of this method is that selective mass scaling may be required to reduce the critical timestep. More and more users are switching to using these bolts in their models.