Results 51 to 60 of about 3,600 (293)

Coupled Non-Ordinary State-Based Peridynamics Model for Ductile and Brittle Solids Subjected to Thermal Shocks

Applied Sciences
A coupled thermomechanical non-ordinary state-based peridynamics (NOSB-PD) model is developed to simulate the dynamic response arising from temperature and to predict the crack propagation with thermal shocks in brittle and ductile solids.
Hui Li, Hanbo Zhang, Yixiong Zhang, Xiaoming Bai, Xuejiao Shao, Bingyang Wu   +5 more
doaj   +1 more source

Modeling the effect of backfill on dynamic fracture propagation in steel pipelines

Journal of Pipeline Science and Engineering, 2022
In this paper, dynamic ductile fracture propagation simulations were conducted to study the use of smoothed particle hydrodynamics (SPH) for modeling the effects of backfill in pipeline burst simulations.
Chris Bassindale, Xin Wang, William R. Tyson, Su Xu   +3 more
doaj   +1 more source

Phase Field Failure Modeling: Brittle‐Ductile Dual‐Phase Microstructures under Compressive Loading

Advanced Engineering Materials, EarlyView.
The approach by Amor and the approach by Miehe and Zhang for asymmetric damage behavior in the phase field method for fracture are compared regarding their fitness for microcrack‐based failure modeling. The comparison is performed for the case of a dual‐phase microstructure with a brittle and a ductile constituent.
Jakob Huber, Jan Torgersen, Ewald Werner
wiley   +1 more source

Ductile fracture criterion for specimens with notches made of aluminium alloy EN-AW 2024 [PDF]

, 2016
The paper presents the experimental verification of the most frequently used ductile fracture criteria based on authors own experimental results and numerical calculations. Attention is drawn to the large discrepancy of results of fracture prediction and
Andrzej Seweryn, Seweryn, A., Łukasz Derpeński, Derpeński, Ł.   +3 more
core   +3 more sources

Characterization of uncoupled ductile fracture criteria for 0Cr17Ni4Cu4Nb stainless steel under different stress states

Journal of Materials Research and Technology
Ductile fracture behavior of 0Cr17Ni4Cu4Nb stainless steel was evaluated under six distinct stress states (Flat shear, Flat with a circular hole, Smooth round bar, Flat notched tension, Notched round bar R3.0, Notched round bar R1.5) using eight widely ...
Xiang Cheng, Ruomin Wang, Zhongkang Zhou, Yang Yang, Xiaolu Chen, He Wu, Xiaolei Chen, Wenchen Xu   +7 more
doaj   +1 more source

Numerical Study on Ductile Failure Behaviours of Steel Structures under Quasi-Static Punch Loading

Journal of Marine Science and Engineering, 2023
A reliable finite element procedure to simulate shear-dominated ductile fractures in large-scale, thin-walled steel structures is still evolving primarily due to the challenges in determining the failure criterion of metal materials under complex stress ...
Wei Cai, Zhihui Zhou, Xudong Qian, Dongfeng Cao, Shuxin Li, Ling Zhu, Haixiao Hu   +6 more
doaj   +1 more source

Karl Popper and the Mechanisms of Hydrogen Embrittlement

Advanced Engineering Materials, EarlyView.
Representation of the beginning of loss of ductility rather than embrittlement. Small concentrations of hydrogen in a diffusible form within iron are well‐established to harm the mechanical integrity of steels. There are theories that attempt to explain the pernicious role of hydrogen.
H. K. D. H. Bhadeshia
wiley   +1 more source

Microstructure‐Controlled Crack Propagation and Fracture Resistance in MoSiBTiC Alloy Revealed by Multiscale Extended Finite Element Method Modeling

Advanced Engineering Materials, EarlyView.
A two‐dimensional multiscale finite element analysis framework was established for the first‐generation MoSiBTiC alloy, and the mechanical and fracture‐related parameters of the constituent phases were calibrated through experiments and simulations. The framework provides a basis for analyzing crack propagation behavior in its complex microstructure ...
Junfeng Du, Takahiro Kaneko, Xinyu Yan, Takahito Ohmura, Kyosuke Yoshimi   +4 more
wiley   +1 more source

A Macroscopic Strength Criterion for Isotropic Metals Based on the Concept of Fracture Plane

Metals, 2019
Although the linear Mohr−Coulomb criterion is frequently applied to predict the failure of brittle materials such as cast iron, it can be used for ductile metals too.
Jiefei Gu, Puhui Chen, Ke Li, Lei Su
doaj   +1 more source

Microstructure Evolution of a VMnFeCoNi High‐Entropy Alloy After Synthesis, Swaging, and Annealing

Advanced Engineering Materials, EarlyView.
The synthesis and processing (rotary swaging and annealing) of the novel VMnFeCoNi alloy is investigated, alongside the estimation of the grain size effect on hardness. Analysis of a wide grain size range of recrystallized microstructures (12–210 µm) reveals a low annealing twin density.
Aditya Srinivasan Tirunilai, Zeki Ayrildi, Buse Şen, Maik Rajkowski, Mathias Redondo Garcia, Markus Stricker, Guillaume Laplanche   +6 more
wiley   +1 more source