Research Article

A Radial Return Algorithm Application in Elastoplastic Frame Analysis Using Plastic Hinge Approach

Table 8

Four-legged jacket type-1. Error norms for Newton iterative scheme on global equilibrium.

Single-vector return algorithm
Residual normEnergy normResidual normEnergy norm

Step 12Step 12Step 52Step 52
0.11997E-030.10000E+010.20903E-030.10000E+01
0.16535E-090.27673E-120.41175E-070.43179E-10
0.18777E-150.41131E-250.36921E-150.24472E-22