Results 61 to 70 of about 24,291 (299)

On large deformations of thin elasto-plastic shells: Implementation of a finite rotation model for quadrilateral shell element [PDF]

, 1997
A large-deformation model for thin shells composed of elasto-plastic material is presented in this work, Formulation of the shell model, equivalent to the two-dimensional Cosserat continuum, is developed from the three-dimensional continuum by employing ...
Babuška, Babuška, Babuška, Babuška, Babuška, Babuška, Babuška, Belytschko, Belytschko, Belytschko, Bergman, Burnett, Cremers, Duarte, Franke, Freund, Gerdes, Gilbarg, Gradshtein, Henrici, Herrera, Kansa, Kansa, Lancaster, Liszka, Liu, Liu, Liu, McLain, Melenk, Melenk, Monaghan, Muskhelishvili, Nayroles, Oden, Oh, Oh, Pinkus, Schaback, Shephard, Shirron, Szegö, Thomson, Vekua, Walsh   +44 more
core   +1 more source

Tough, Ductile, and Strong Hard‐Soft Cementitious Composite Enabled by Multi‐Material Additive Manufacturing

Advanced Materials, EarlyView.
Drawing inspiration from the layered hard‐soft architecture found in sea sponges, this work establishes a new framework for architected cementitious composites (ACC) through multi‐material additive manufacturing (MMAM) process. The integration of mortar and elastomer phases into layered architectures enables synergistic toughening mechanisms, including
Aimane Najmeddine, Shashank Gupta, William Makinen, Zayvinn Lin, Krystal Delnoce, Reza Moini   +5 more
wiley   +1 more source

The concurrent ratcheting and stiffness degradation-based damage variable in SA508 steel samples undergoing stress cycles at room and elevated temperatures

Materials Research Express
This study evaluates the interaction between ratcheting and stiffness degradation in SA508 steel samples at various operating temperatures using a combined isotropic-kinematic hardening framework.
M Karimi, A Varvani-Farahani
doaj   +1 more source

Mesoscale crystal plasticity modelling of Cu-Nb nanolaminates composites considering nonlocal effects and confined layer slip mechanisms

Materials & Design
Nanolaminated materials have garnered considerable attention due to their high strength, elevated strain hardening rate, and measurable plasticity. The heightened strain hardening rate is attributed to the presence of back stress resulting from plastic ...
Benjie Ding, Mengkai Lu, Lvwen Zhou, Jianying Hu, Chao Xie, Minghua Zhang, Jianke Du   +6 more
doaj   +1 more source

Non-proportional deformation paths for sheet metal: experiments and models [PDF]

, 2009
For mild steel, after significant plastic deformation in one direction, a subsequent deformation in an orthogonal direction shows a typical stress overshoot compared to monotonic deformation. This phenomenon is investigated experimentally and numerically
Boogaard, A.H. van den, Riel, M. van
core   +2 more sources

Numerical derivation of constitutive models for unbonded flexible risers [PDF]

, 2009
This is the post-print version of the final paper published in International Journal of Mechanical Sciences. The published article is available from the link below. Changes resulting from the publishing process, such as peer review, editing, corrections,
Alfano, G, Bahai, H, Bahtui, A
core   +1 more source

Multiplicative AF kinematic hardening in plasticity

International Journal of Solids and Structures, 2008
The basic innovation proposed in this work is to consider one of the two coefficients of the Armstrong and Frederick (AF) evolution equation for the back stress, function of another dimensionless second order internal variable evolving also according to an AF equation in what can be called a multiplicative AF kinematic hardening rule.
Dafalias, Yannis F., Kourousis, Kyriakos I., Saridis, George J.   +2 more
openaire   +2 more sources

Triply‐Twinned Metamaterials: Unraveling the Mechanics and Failure Pathways Through High‐Resolution XCT

Advanced Materials, EarlyView.
Triply‐twinned architected lattices transform deformation from bending to stretching of struts, delivering up to threefold increases in stiffness and strength across polymeric and metallic systems. High‐resolution synchrotron XCT and image‐based simulations reveal how meta‐grain architecture, defects, and AM build orientation govern failure pathways ...
David McArthur, George Maddison, Jaianth Vijayakumar, Paul Tafforeau, Kathy Christofidou, Peter David Lee, PJ Tan, Chu Lun Alex Leung   +7 more
wiley   +1 more source

Application of an elastoplastic model to predict behaviors of Concrete-Faced Rock-fill Dam under complex loading conditions

Journal of Civil Engineering and Management, 2015
In this research, a simplified rotational kinematic hardening model with the concept of sub-loading was used to predict behaviors of Concrete-Faced Rock-fill Dam under complex loading conditions.
Kuangmin Wei, Sheng Zhu
doaj   +1 more source

A comparison of two frameworks for kinematic hardening in hyperelasto-plasticity [PDF]

, 2017
In this work we compare two frameworks for thermodynamically consistent hyperelasto-plasticity with kinematic hardening. The first was formulated by Dettmer and Reese (2004), inspired by Lion (2000), and has been used to model sheet metal forming.
Ekh, Magnus, Meyer, Kanut A.
core