Results 1 to 10 of about 4,685,644 (340)

Deformation Localization and Damage Constitutive Model of Raw Coal and Briquette Coal under Uniaxial Compression

Geofluids, 2022
In order to compare and analyze the difference in deformation and damage law of soft and hard porous media materials, the digital image correlation is used to evaluate the heterogeneous development of strain fields of hard and brittle raw coal material ...
Lina Ge, Fu Yi, Changbo Du, Junxia Zhou, Zhenglong Cui, Tao Wang   +5 more
doaj   +1 more source

Polymer-like double necking deformation in an FeCoCrV medium entropy alloy

Materials Research Letters
Necking in metallic materials is a crucial strain localization phenomenon traditionally regarded as the termination of uniform deformation and the sign of impending fracture.
Si Gao, Yao Xiao, Jiankun Liu, Reza Gholizadeh, Myeong-Heom Park, Shuhei Yoshida, Wenqi Mao, Yanzhong Tian, Nobuhiro Tsuji   +8 more
doaj   +1 more source

Aging-dependent strain localization in amorphous glassy polymers: From necking to shear banding

International Journal of Solids and Structures, 2018
This study investigates the influence of physical aging on the tensile deformation behaviors of poly(ethylene terephthalate)-glycol. The polymers are subjected to a quenched and an annealed heat treatment, followed by deformation in tension.
Run-xin Zhang, Pengxiang Bai, Dong Lei, R. Xiao   +3 more
semanticscholar   +1 more source

Visualizing Strain‐Coupled Cryogenic Phase Transitions and Defect Dynamics in Perovskite Quantum Dots Using In Situ STEM

Advanced Science
Perovskite quantum dots (PeQDs) offer high photoluminescence quantum efficiencies, precise spectral tunability, and solution‐processability, making them promising for advanced optoelectronics.
Xinjuan Li, Zhao Jiang, Si Chen, Yi Tang, Bofeng Xue, Tianhao Wu, Yang Lu, Xavier Moya, Akshay Rao, Zhongzheng Yu, Caterina Ducati   +10 more
doaj   +1 more source

Effect of fibre orientation on the mechanical response of reinforced sand, detected with x-ray tomography [PDF]

E3S Web of Conferences
The mechanical behaviour of fibre-reinforced sands (FRS) has been thoroughly explored with a laboratory study, firstly investigating the influence of relevant parameters such as grading index, soil density, amount, diameter, and length of fibres then ...
Arciero Michela, Salvatore Erminio, Tengattini Alessandro, Modoni Giuseppe, Viggiani Gioacchino   +4 more
doaj   +1 more source

Patterns of strain localization in heterogeneous, polycrystalline rocks – a numerical perspective

, 2017
The spatial and temporal patterns of strain localization in materials with pre-existing heterogeneities are investigated via a series of two-dimensional numerical models. Models include (i) a dynamic feedback process, to simulate rheological weakening in
R. Gardner, S. Piazolo, L. Evans, N. Daczko   +3 more
semanticscholar   +1 more source

A peridynamics model for strain localization analysis of geomaterials

International journal for numerical and analytical methods in geomechanics (Print), 2018
Geomaterials such as sand and clay are highly heterogeneous multiphase materials. Nonlocality (or a characteristic length scale) in modeling geomaterials based on the continuum theory can be associated with several factors, for instance, the physical ...
Xiaoyu Song, N. Khalili
semanticscholar   +1 more source

Evaluation method with finite-element analysis for bending rupture limit of line pipe with high design factor

Nihon Kikai Gakkai ronbunshu, 2016
This study focused on ruptures due to bending deformation of steel pipe that is operated with a high design factor. The design factor refers to the ratio of the hoop stress from internal pressure to the yield strength of pipe material.
Masaki MITSUYA
doaj   +1 more source

Strain Localization and Seismic Properties in the Heterogeneous Ailaoshan‐Red River Shear Zone, Southeast Asia

Geochemistry, Geophysics, Geosystems
Strain localization is crucial in developing crustal‐scale shear zones; however, a systematic analysis of deformation characteristics and their impact on seismic properties is still lacking.
Junyu Li, Shuyun Cao
doaj   +1 more source

Prediction of strain localization in nonlinear strain paths

, 2021
The simulation of nonlinear strain paths is important both for the design and development of tools for sheet metal forming processes, which can present very complex geometries, as well as for the prediction of failures during the process. Despite the evolution of computational methods, the prediction of ductile failure continues to be a challenge ...
openaire   +1 more source