17. Use a computer program to solve for the lowest six frequencies of the cantilever shown. Consider three different mathematical models: a Hermitian beam model, a plane stress model, and a fully three-dimensional model. In each case, choose appropriate finite element discretizations and consider the lumped and consistent mass matrix assumptions. Verify that accurate results have been obtained. 0.01 m 0.04 m 0.60 m Young’s modulus E 200,000 MPa Poisson’s ratio v 0.3 Mass density p-7800 kg/m3
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