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Table 3 Cook’s membrane: Convergence

From: On a recursive formulation for solving inverse form finding problems in isotropic elastoplasticity

Cook’s membrane: Calculation of Δ
Iteration {Ep, α} = {0, 0} {Ep, α} = {0, 0.1} {Ep, α} = {0.02, 0.02}
1 84.5661 3124.0123 2811.6881
2 5.8472 10-2 9.5801 257.2319
3 2.6557 10-2 2.8556 49.982
4 2.9812 10-3 4.5033 10-1 61.4643
5 2.4846 10-4 3.6374 10-2 102.2576
6 1.6952 10-5 2.3578 10-3 229.8063
7 9.859 10-7 1.4145 10-4 477.2713
8 5.7253 10-8 7.924 10-6 1092.9303
9 3.1401 10-9 4.4152 10-7 2632.0609
10   2.4095 10-8  
11   1.3194 10-9