Journal ArticleDOI
Piecewise linear approximation of nonlinear unloading-reloading behaviors using a multi-surface approach
Reads0
Chats0
TLDR
In this article, a multi-surface approach is proposed to describe nonlinear and hysteretic unloading-reloading behaviors of sheet metals, adopting the concept of multiple yield surfaces in the Mroz model.About:
This article is published in International Journal of Plasticity.The article was published on 2017-06-01. It has received 38 citations till now. The article focuses on the topics: Linear elasticity & Piecewise linear function.read more
Citations
More filters
Journal ArticleDOI
Anisotropic yield function based on stress invariants for BCC and FCC metals and its extension to ductile fracture criterion
TL;DR: In this paper, the effect of the third stress invariant in the Drucker function is analyzed and calibrated for metals with body-centered cubic (BCC) and face centered cubic (FCC) crystal systems based on the yielding and plastic flow of both crystal plasticity and biaxial tensile experiments.
Journal ArticleDOI
A yield criterion through coupling of quadratic and non-quadratic functions for anisotropic hardening with non-associated flow rule
Eun-Ho Lee,Eun-Ho Lee,Thomas B. Stoughton,Thomas B. Stoughton,Jeong Whan Yoon,Jeong Whan Yoon +5 more
TL;DR: In this paper, a simple coupling of quadratic and non-quadratic yield functions with a non-associated flow rule is proposed to describe the evolution of yield surface (or anisotropic hardening).
Journal ArticleDOI
Model for description of nonlinear unloading-reloading stress-strain response with special reference to plastic-strain dependent chord modulus
TL;DR: In this article, a nonlinear elastic model was proposed for the variation of the elastic modulus during the unloading-reloading process, which is directly associated with the widely used equation for the plastic-strain dependent chord modulus, and no additional material parameters are needed for modeling.
Journal ArticleDOI
Anisotropic Hardening Behaviour and Springback of Advanced High-Strength Steels
TL;DR: In this paper, an elastoplastic material constitutive model was developed to account for the evolution of anisotropy of a dual-phase steel, and the measured springback angles were compared to the predicted ones.
Journal ArticleDOI
The sustainability of neural network applications within finite element analysis in sheet metal forming: A review
M.R. Jamli,N.M. Farid +1 more
TL;DR: A review of studies into the development of sheet metal forming and the application of neural network to predict springback is presented and can be summarized as Springback is influenced by various factors that are involved in the sheetMetal forming process.
References
More filters
Journal ArticleDOI
Time-independent constitutive theories for cyclic plasticity
TL;DR: In this paper, three different approaches are considered for the description of kinematic behavior: (i) the use of independent multi-yield surfaces, (ii) models with two surfaces only, (iii) the so-called "nonlinear-kinematic hardening rule" defined by a differential equation.
Journal ArticleDOI
Plane stress yield function for aluminum alloy sheets—part 1: theory
Frédéric Barlat,Frédéric Barlat,J.C. Brem,Jeong W. Yoon,Jeong W. Yoon,Kwansoo Chung,Re Dick,D.J. Lege,Farhang Pourboghrat,Shi-Hoon Choi,E. Chu +10 more
TL;DR: In this article, a plane stress yield function that well describes the anisotropic behavior of sheet metals, in particular, aluminum alloy sheets, was proposed, which was introduced in the formulation using two linear transformations on the Cauchy stress tensor.
Journal ArticleDOI
On the description of anisotropic workhardening
TL;DR: In this paper, a model of workhardening is proposed which generalizes the known rules of isotropic and kinematic work-hardening by introducing the concept of a "Field of Workhardening moduli".
Journal ArticleDOI
Plastic Internal Variables Formalism of Cyclic Plasticity
Yannis F. Dafalias,Egor P. Popov +1 more
Journal ArticleDOI
Elastic-plastic behavior of steel sheets under in-plane cyclic tension-compression at large strain
TL;DR: In this article, the cyclic elasto-plasticity of two types of steel sheets for press-forming (an aluminum-killed mild steel and a dual-phase high strength steel of 590 MPa ultimate tensile strength) under in-plane cyclic tension-compression at large strain (up to 25% strain for mild steel, and 13% for high-strength steel) was investigated.