i was going through a research paper, in that paper researcher has used the C3D4R mesh element. i was trying to replicate that model. i find the tetrahedral element with 4 nodes , but i unable to find the option of reduced integration in tetrahedral element, in hexagonal element type i can see the option of reduced integration element but unable to see this option in tetrahedral case, i am using abaqus 2019 . is this type of element available in abaqus 2019?