A ductile damage-based vertex model for predictor—controller of forming limit at different strain rates with experimental validations

Mansoub, Farid Hosseini; Basti, Ali; Darvizeh, A.; Zajkani, Asghar

doi:10.1007/s00170-019-03951-4

Cited by 4 publications

(1 citation statement)

References 44 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In this work, a fully nonlinear FEM is developed to capture the corresponding stress state, hardening, and damage evolutions during experiments of high-velocity pressure pules done by shock tubes. Also, Mansoub et al 28,29 performed extensive experiments and proposed a rate-dependent vertex model coupled with the ductile damage context to predict the forming limits and then control those at different strain rates. Etemadi et al 30 introduced a hybrid modeling of phenomenological damage evolution in low carbon steels during Equal Channel Angular Extrusion (ECAE) process.…”

Section: Introductionmentioning

confidence: 99%

Localized forming limit analysis of substrate-supported metals: Influence of yield-dependent necking bound angle

Bandizaki

Zajkani

Moulood

2021

Proceedings of the Institution of Mechanical Engineers, Part B:

Self Cite

View full text Add to dashboard Cite

In this paper, the influence of functional elastomeric substrate-supported layers for enhancing potential resistance capability against localized plastic failure of advanced high strength steels is considered based on a localized necking model of vertex theory. Application of this structure leads to postponing the plastic instability of the metallic part. By defining diffuse and localized modes of deformation in a general framework, the theoretical models are developed to predict necking limits at several stress states. In addition, the results of the Hookean and neo-Hookean elastomers are compared in terms of strain hardening with the anisotropy parameter of Hill’s yield criteria. Since necking band angle (NBA) is a principal factor for the necking prediction, its effect on bifurcation events is evaluated specifically for different ratios of stress rate, and quadratic and non-quadratic yield criteria. This analysis is performed by proposing a supported and yield-dependent necking bound angle (YD-NBA). All considerations are done by providing equilibrium conditions governed over the NBA. Finally, obtained results indicate good agreements between several theoretical considerations and experimental data.

show abstract

Section: Introductionmentioning

confidence: 99%