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- W772951617 abstract "A numerical study on predicting defects in an elastic planestress body is carried out by applying an optimization technique. A response error between the measured and computed displacements is minimized to predict the location and size of the defects in a body A parameterized finite element model is formulated by decomposing the stiffness matrix into constitutive parameters and kernel matrices for each element. A nonlinear constrained optimization problem is solved for optimal constitutive parameters in each finite element of the model. Defects in a planestress body are predicted by the reduction in the constitutive parameters from their baseline values without modifying the topology of the system model for the defect-free state. Measured data relatively sparse with respect to the number of unknown parameters is simulated. An adaptive parameter grouping scheme is applied to locate the defects with a pre-defined finite element model. The proposed method is investigated through simulated examples. The effects of measurement error on the identified results are also investigated through the examples." @default.
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- W772951617 date "1996-01-01" @default.
- W772951617 modified "2023-09-24" @default.
- W772951617 title "Prediction of Defects in a Planestress Body by Nonlinear Optimization of Constitutive Parameters" @default.
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