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A complementarity approach for elastoplastic analysis of strain softening frames under combined bending and axial force
AbstractThis paper presents the elastoplastic analysis of skeletal structures that can exhibit local strain softening behavior. In particular, both nonholonomic (path-dependent) and holonomic (path-independent) formulations are developed as special instances of the well-known mathematical programming problem known as a mixed complementarity problem (MCP). The effects of combined bending and axial force are also included through a (hexagonal) piecewise linear yield locus that can accommodate either perfect plasticity or isotropic softening. Numerical examples are given to assess the ability of the nonholonomic solution scheme proposed to trace all multiple equilibrium paths, to compare the results of the nonholonomic assumption with those of its simpler approximate holonomic counterpart, and to assess the influence of combined stresses.
A complementarity approach for elastoplastic analysis of strain softening frames under combined bending and axial force
AbstractThis paper presents the elastoplastic analysis of skeletal structures that can exhibit local strain softening behavior. In particular, both nonholonomic (path-dependent) and holonomic (path-independent) formulations are developed as special instances of the well-known mathematical programming problem known as a mixed complementarity problem (MCP). The effects of combined bending and axial force are also included through a (hexagonal) piecewise linear yield locus that can accommodate either perfect plasticity or isotropic softening. Numerical examples are given to assess the ability of the nonholonomic solution scheme proposed to trace all multiple equilibrium paths, to compare the results of the nonholonomic assumption with those of its simpler approximate holonomic counterpart, and to assess the influence of combined stresses.
A complementarity approach for elastoplastic analysis of strain softening frames under combined bending and axial force
Tangaramvong, S. (author) / Tin-Loi, F. (author)
Engineering Structures ; 29 ; 742-753
2006-06-20
12 pages
Article (Journal)
Electronic Resource
English
Limit analysis of strain softening steel frames under pure bending
| Online Contents | 2007
Limit analysis of strain softening steel frames under pure bending
| Elsevier | 2006