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Contact force and gap of a block A unit square block is under a uniformly distributed load q=1

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Contact force and gap of a block A unit square block is under a uniformly distributed load q=1.0 kN/m on the top surface. The bottom surface is under contact constraint against the rigid floor. When the block is modeled by one and four finite elements, as shown in Fig. 5.13, calculate contact forces and gaps at contact nodes. Assume isotropic material and no friction in the contact interface. Use the penalty parameter ω_n=105.