Zobrazeno 1 - 10
of 405
pro vyhledávání: '"dynamic damage"'
Publikováno v:
International Journal of Mining Science and Technology, Vol 34, Iss 8, Pp 1135-1150 (2024)
The wetting-drying (W-D) cycle is a type of water–rock interaction. The pore structure of rock, such as shape, size, distribution and pore throat, affects fluid storage and transport. Fractal theory and experimental research on the evolution charac
Externí odkaz:
https://doaj.org/article/83d4f78b0b884f9488d8d396123ea985
Yes
This study established a dynamic damage constitutive model for ultra-high performance concrete (UHPC) with nanofillers, based on a viscoelastic dynamic constitutive model and a damage evolution equation. Ten types of nanofillers, including p
This study established a dynamic damage constitutive model for ultra-high performance concrete (UHPC) with nanofillers, based on a viscoelastic dynamic constitutive model and a damage evolution equation. Ten types of nanofillers, including p
Externí odkaz:
http://hdl.handle.net/10454/19936
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-14 (2024)
Abstract To improve the efficiency of frozen soil excavation, the new shaft tunneling machine was developed. The new shaft tunneling machine exerts pressure on the frozen soil through the cutter under the joint action of its own gravity, the drum rot
Externí odkaz:
https://doaj.org/article/fe63e3f180d64169b8071b641e12b23b
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-17 (2024)
Abstract In the process of drilling and blasting construction of large-cross-section tunnels, the layout of wedge-shaped cutting holes has a great influence on the effect of blasting. In this study, theoretical analysis and numerical simulation were
Externí odkaz:
https://doaj.org/article/28ceae22d73144c3aa27c0b89669e92b
Publikováno v:
Meitan kexue jishu, Vol 51, Iss 10, Pp 140-154 (2023)
There is still a great challenge to reveal the micro-macro dynamic mechanical behavior of initial coal failure induced by mining stress field in working face as a necessary condition for the outburst occurrence. The multivariate stress loading paths
Externí odkaz:
https://doaj.org/article/ad6aa26c7bbc48fb960348459f531bdb
Autor:
Rui-zhi Wang, Zhi-qiang Wang, En-ling Tang, Lei Li, Guo-lai Yang, Chun Cheng, Li-ping He, Ya-fei Han
Publikováno v:
Defence Technology, Vol 28, Iss , Pp 121-135 (2023)
Block piezoelectric ceramics (PZTs) are often used in impact igniters to provide activation energy for electric initiators. Under the action of strong impact stress, PZTs release electric energy accompanied by crack initiation, propagation and crushi
Externí odkaz:
https://doaj.org/article/2ebbddd2de8c44ca9b3381389a4b79c0
Autor:
Rongzhou Yang, Ying Xu
Publikováno v:
Journal of Materials Research and Technology, Vol 25, Iss , Pp 925-945 (2023)
To explore the dynamic compression behavior and damage evolution characteristics of “rigid-flexible coupling” surrounding rock supporting structure. Split Hopkinson pressure bar (SHPB) was used to carry out constant amplitude cyclic bi-directiona
Externí odkaz:
https://doaj.org/article/bbe9b3c75b23468590ea109ad6051925
Publikováno v:
Meitan xuebao, Vol 48, Iss 5, Pp 2138-2152 (2023)
Using an impact damage-percolation experimental system for gas bearing coal or rock and an industrial CT scanning system, the authors design and carry out a series of dynamic compression-seepage tests for loading at different impact velocities under
Externí odkaz:
https://doaj.org/article/1d75a3cef7754921b85b4fc808c54813
Publikováno v:
Case Studies in Construction Materials, Vol 18, Iss , Pp e01994- (2023)
Abstractr: In order to improve the weak binding force and easy pull-out of the traditional carbon fiber (CF) and concrete interface, this paper prepared three-dimensional multi-scale carbon nanotube-fiber (MCNF) by grafting carbon nanotubes on the su
Externí odkaz:
https://doaj.org/article/563547f0a40a492cbc8a5bfece599587
Publikováno v:
Buildings, Vol 14, Iss 3, p 624 (2024)
Composite concrete structures, commonly found in urban infrastructures, such as highways and runways, are pivotal research object in the protection field. To study the dynamic response of composite concrete structures subjected to reactive jet penetr
Externí odkaz:
https://doaj.org/article/0d5eeeb9cafe4284b9932b0c420bed28