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Displacement of the center point in Figure (1) for the compressed block benchmark (Section 4.1) for different choices of elements and numerical Poisson ratio. The solid degrees of freedom (DOF) range from m = 15 to 4753. Notice that each row has the same extents. If νstab is close to , low order elements produce volumetric locking, and higher order elements are needed for convergence at reasonable numbers of DOF.
