Modification of the multisurface theory of plasticity with one surface: comparison with experimental data

Proceedings of the International Conference „Innovative Materials, Structures and Technologies”

2014

Abstract.A multimodel analysis of the elastic-plastic behavior of materials and structural components under complex non-proportional variable loading is considered. The multimodel elastic-plastic analysis is based on the developed library of elastic-plastic models and a system of criteria allowing the selection of adequate models. A unified form of material model description is given intended for the efficient finite element implementation. Efficiency of the multimodel analysis is illustrated considering several examples.

show abstract

Section: Results Of Multimodel Finite Element Analysismentioning

confidence: 99%

Analysis of complex variable processes of elastic-plastic deformation by means of the hierarchical consistency of material models

Proceedings of the International Conference „Innovative Materials, Structures and Technologies”

2014

show abstract

“…Verification of the Damage Criterion on Tubular Specimens under Complex Cyclic LoadingThe predictive capability of the damage accumulation model (1) was investigated by testing tubular specimens made of X18H10T steel under complex cyclic loading with partial and full unloading. Specific work of plastic deformation before failure calculated using structural model of plasticity[1,2,7,8] and multi-surface theory of plasticity with one active surface[1,2,8] was defined as 343 MPa and 467 MPa. Experimental value under axial tension is 436 MPa.…”

mentioning

confidence: 99%

Fatigue Damage Accumulation under the Complex Varying Loading

2014

AMM

Fatigue analysis of steel parts of structures, which are subjected to complex irregular loading programs caused by wind, thermal, wave loads, earthquakes and combined imposed actions, requires in some cases using special methods of stress-strain evaluation. The model of the low cycle fatigue nonlinear damage accumulation is developed with taking into account the history of the deformation process. The damage is defined on the base of considering the quasi-static accumulation of maximal strain (stress) and hysteresis loops. The identification of material constants of the model is discussed. Application of the damage model for fatigue analysis of the antennas, pipelines, basements and fasteners units is considered and a comparison with experiments is given.

show abstract

Multisurface Theory of Plasticity with One Active Surface: Basic Relations, Experimental Validation and Microstructural Motivation

Material Modeling and Structural Mechanics

2022