A force method for elastic-plastic analysis of frames by quadratic optimization

DOI10.1016/0020-7683(88)90030-3zbMath0629.73083OpenAlexW1981141073MaRDI QIDQ1094211

Lavinia Alves Borges, Néstor Zouain Pereira, Mildred Ballin Hecke

Publication date: 1988

Published in: International Journal of Solids and Structures (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.1016/0020-7683(88)90030-3

zbMATH Keywords

stress distributionsdualizationminimum principleLemke's algorithmforce methodquadratic optimization problemapproximated by averaging the plastic functiondiscrete version of statical formulationelastoplastic planar framesfinite increments of stresses and plastic factorsinterpolation of plastic multiplier fieldsLocal elastic unloadingplastic admissibility constraintplastic admissibility of final stresses

Mathematics Subject Classification ID

Numerical optimization and variational techniques (65K10) Rods (beams, columns, shafts, arches, rings, etc.) (74K10) Stress concentrations, singularities in solid mechanics (74G70) Optimization problems in solid mechanics (74P99)

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