Results 61 to 70 of about 24,678 (163)

Study on brittle–plastic transition of tight sandstone under high confining pressure based on digital rock modeling

Energy Exploration & Exploitation
The mechanical behavior of deep tight sandstone reservoirs, particularly the brittle–plastic transition under high confining pressure, is critical for drilling safety and efficient reservoir development.
Bingfang Cheng, Guanghua Dong, Chunji Li, Hailin Cui, Bo Dong   +4 more
doaj   +1 more source

Compressive damage constitutive model for brittle coal based on the compaction effect and linear energy dissipation law

International Journal of Coal Science & Technology
The study of the mechanical property and damage state of coal materials under compression is a fundamental area of research in underground mining engineering. Drawing upon the compaction effect and linear energy dissipation (LED) law, a novel compressive
Fengqiang Gong, Lei Xu, Mingzhong Gao, Yingjie Zhao, Peilei Zhang   +4 more
doaj   +1 more source

The Use of Dijkstra's Algorithm in Assessing the Correctness of Imaging Brittle Damage in Concrete Beams by Means of Ultrasonic Transmission Tomography. [PDF]

Materials (Basel), 2020
Perkowski Z, Tatara K.
europepmc   +1 more source

Folded fabric tunes rock deformation and failure mode in the upper crust

Scientific Reports, 2017
The micro-mechanisms of brittle failure affect the bulk mechanical behaviour and permeability of crustal rocks. In low-porosity crystalline rocks, these mechanisms are related to mineralogy and fabric anisotropy, while confining pressure, temperature and
F. Agliardi, M. R. Dobbs, S. Zanchetta, S. Vinciguerra   +3 more
doaj   +1 more source

Damage evolution mechanism and low-damage grinding technology of silicon carbide ceramics

International Journal of Extreme Manufacturing
Silicon carbide (SiC) ceramics are extensively utilized in aerospace, national defense, and petrochemical industries due to their superior physical and chemical properties.
Chen Li, Kechong Wang, Oleg Zakharov, Hailong Cui, Mingtao Wu, Tianchen Zhao, Yongda Yan, Yanquan Geng   +7 more
doaj   +1 more source

Data-driven constitutive models for brittle solids displaying progressive anisotropic damage

Composites Part C: Open Access
We propose and demonstrate a computational framework to obtain data-driven surrogate constitutive models capturing the mechanical response of anisotropic brittle solids displaying progressive anisotropic damage.
Weijian Ge, Vito L Tagarielli
doaj   +1 more source

Damage Behaviour of Quasi-Brittle Composites: Mathematical and Computational Aspects

Applied Sciences
In the present paper, an evaluation of the damage behaviour of quasi-brittle composites exposed to mechanical, thermal, and other loads is studied by means of viscoelastic and/or viscoplastic material models, applying some non-local regularisation ...
Jiří Vala, Jiří Tomáš
doaj   +1 more source

Toughness by design: multi-scale interpenetrating lattices with size-enhanced fracture resistance

npj Metamaterials
Architecture has long been used as a tool to enhance material toughness, but despite extensive research dedicated to studying toughening mechanisms, the role of feature size remains poorly understood.
Abdulaziz O. Alrashed, Zainab S. Patel, Kush Dwivedi, Benjamin C. White, Bryan Kaehr, Brad L. Boyce, Lucas R. Meza   +6 more
doaj   +1 more source

Abrasive machining simulation technology for hard-brittle materials

Jin'gangshi yu moliao moju gongcheng, 2019
Hard-brittle materials such as monocrystalline silicon have high hardness, low fracture toughness and other characteristics, which belong to difficult-to-machine materials.
LI Long, GE Peiqi, WANG Peizhi, LI Zongqiang   +3 more
doaj  

Dynamic Constitutive Model of Fractured Brittle Rock With Fillings Based on Weibull Distribution and High-Frequency Maxwell

Shock and Vibration
Fractured rocks containing infill materials are frequently encountered in engineering applications, and an understanding of dynamic characteristics is crucial for assessing stability and preventing disasters in rock engineering projects.
Liang Han, Xianqi Xie, Yingkang Yao, Wei Wang, Jiawang Hao   +4 more
doaj   +1 more source