Results 81 to 90 of about 2,706 (226)

Elastoplastic damage analysis with algebraic derivation of consistent tangent by block Newton method

Nihon Kikai Gakkai ronbunshu
The simultaneously iterative procedure proposed by the authors is applied to elastoplastic problems with damage. From the definition of a coupled problem of the weak form of the equilibrium equation and the constraint conditions for plastic yielding and ...
Takeki YAMAMOTO, Takahiro YAMADA, Kazumi MATSUI   +2 more
doaj   +1 more source

Dynamic anticrack propagation in snow

Nature Communications, 2018
Anticrack propagation in snow results from the mixed-mode failure and collapse of a buried weak layer and can lead to slab avalanches. Here, authors reproduce the complex dynamics of anticrack propagation observed in field experiments using a Material ...
J. Gaume, T. Gast, J. Teran, A. van Herwijnen, C. Jiang   +4 more
doaj   +1 more source

Smoothed finite element method for two-dimensional elasto-plasticity

Vietnam Journal of Mechanics, 2009
This communication shows how the smoothed finite element method (SFEM) very recently proposed by G. R. Liu [14] can be extended to elasto-plasticity. The SFEM results are in excellent agreement with the finite element (FEM) and analytical results.
Stéphane Pierre Alain Bordascorres, Hung Nguyen-Dang, Quyen Phan-Phuong, Hung Nguyen-Xuan, Sundararajan Natarajan, Marc Duflot   +5 more
doaj   +1 more source

Regression‐based models for the torsional stiffness reduction factor in reinforced concrete beams under combined torsion and shear

Structural Concrete, EarlyView.
Abstract This paper presents a regression‐based methodology to estimate the Torsional Stiffness Reduction Factor (TSRF) of reinforced concrete beams under combined torsion and shear. A numerical database of 6816 samples was generated using the Combined Action Softened Truss Model (CA‐STM) implemented in Python, considering design guidelines prescribed ...
Khrys K. S. Medeiros, Jordlly R. B. Silva, Bernardo Horowitz   +2 more
wiley   +1 more source

Hybrid-Trefftz stress elements for three-dimensional elastoplasticity

Computer Assisted Methods in Engineering and Science, 2023
The stress model of the hybrid-Trefftz finite element formulation is applied to the elastoplastic analysis of solids. The stresses and the plastic multipliers in the domain of the element and the displacements on its boundary are approximated.
Flávio L.S. Bussamra, Paulo de Mattos Pimenta, João A. Teixeira de Freitas   +2 more
doaj  

ERROR ESTIMATION AND ADAPTIVITY IN ELASTOPLASTICITY

International Journal for Numerical Methods in Engineering, 1996
Summary: A method is developed to control the parameters of a finite element computation for time-dependent material models. To evaluate discretization errors, we use a global error measure in constitutive relation based on Drucker's inequality. This error includes, over the studied time interval, the error of the finite element model and the error of ...
Gallimard, L., Ladevèze, Pierre, Pelle, Jean-Pierre   +2 more
openaire   +3 more sources

Structural testing and analytical model of Reinforced Concrete (RC) prisms with 3D‐printed concrete permanent formwork under compressive loading

Structural Concrete, EarlyView.
Abstract The implementation of traditional steel reinforcement in 3D concrete printed structures is a major challenge. Although 3D‐printed structures may be used as formwork, the knowledge about their structural contribution is limited. This research aims to experimentally evaluate the structural performance of reinforced concrete prisms with 3D ...
Luis M. de la Flor Juncal, Allan Scott, Don Clucas, Giuseppe Loporcaro   +3 more
wiley   +1 more source

Large deformation dynamic analysis elastoplastic solids by the finite element method I. total lagrangian formulation.

Vietnam Journal of Mechanics, 1987
An effective finite element formulation based upon the total Lagrangian desert potion is presen ted for nonlinear dynamic problems in deformable solids. Continuum is considered with large displacement, large strain and material elastoplasticity.
Tran Duong Hien
doaj   +1 more source

Behavior of exterior beam‐column joint reinforced with shape memory alloy

Structural Concrete, EarlyView.
Abstract Beam‐column joints are critical regions in moment‐resisting frames and are particularly susceptible to severe stress concentrations and reinforcement congestion. Conventional design typically relies on dense transverse reinforcement to improve joint performance, resulting in construction difficulties and reinforcement congestion.
Yemenashu Nigusse Mogess, Tesfaye Alemu Mohammed, Temesgen Ejigu Alene, Awoke Kelemu Tamene   +3 more
wiley   +1 more source

A micropolar theory of finite deformation and finite rotation multiplicative elastoplasticity

, 1994
The aim of this work is to formulate a geometrically exact theory of finite deformation and finite rotation micropolar elastoplasticity to obtain a generalized nonlinear continuum framework.
Steinmann, Paul
core   +1 more source