Zobrazeno 1 - 10
of 706
pro vyhledávání: '"Kun F"'
Publikováno v:
Scientific Reports 13, 19733 (2023)
The topology of the network of load transmitting connections plays an essential role in the cascading failure dynamics of complex systems driven by the redistribution of load after local breakdown events. In particular, as the network structure is gr
Externí odkaz:
http://arxiv.org/abs/2311.10850
Publikováno v:
Phys. Rev. E 88, 062207 (2013)
We investigate the approach to catastrophic failure in a model porous granular material undergoing uniaxial compression. A discrete element computational model is used to simulate both the micro-structure of the material and the complex dynamics and
Externí odkaz:
http://arxiv.org/abs/1402.6586
Publikováno v:
Phys. Rev. Lett. 112, 065501 (2014)
We investigate the scaling properties of the sources of crackling noise in a fully-dynamic numerical model of sedimentary rocks subject to uniaxial compression. The model is initiated by filling a cylindrical container with randomly-sized spherical p
Externí odkaz:
http://arxiv.org/abs/1402.6475
Publikováno v:
Phys. Rev. E 87, 042816 (2013)
We analyze the failure process of a two-component system with widely different fracture strength in the framework of a fiber bundle model with localized load sharing. A fraction 0\leq \alpha \leq 1 of the bundle is strong and it is represented by unb
Externí odkaz:
http://arxiv.org/abs/1310.1478
Publikováno v:
Phys. Rev. E 83, 066108 (2011)
We investigate the effect of thermal fluctuations on the critical stress and the micro-structure of damage preceding macroscopic fracture of Lennard-Jones solids under a constant external load. Based on molecular dynamics simulations of notched speci
Externí odkaz:
http://arxiv.org/abs/1106.6234
Publikováno v:
Phys. Rev. Lett. 104, 095502 (2010)
We present an experimental and theoretical study of the fragmentation of polymeric materials by impacting polypropylene particles of spherical shape against a hard wall. Experiments reveal a power law mass distribution of fragments with an exponent c
Externí odkaz:
http://arxiv.org/abs/1002.2807
Publikováno v:
EPL, 81 (2008) 54005
We study the effect of strong heterogeneities on the fracture of disordered materials using a fiber bundle model. The bundle is composed of two subsets of fibers, i.e. a fraction 0<\alpha<1 of fibers is unbreakable, while the remaining 1-\alpha fract
Externí odkaz:
http://arxiv.org/abs/0802.2695
Publikováno v:
Phys. Rev. Lett. 100, 094301 (2008)
One of the most important scaling laws of time dependent fracture is Basquin's law of fatigue, namely, that the lifetime of the system increases as a power law with decreasing external load amplitude, $t_f\sim \sigma_0^{-\alpha}$, where the exponent
Externí odkaz:
http://arxiv.org/abs/0801.3664
We study the brittle fragmentation of spheres by using a three-dimensional Discrete Element Model. Large scale computer simulations are performed with a model that consists of agglomerates of many particles, interconnected by beam-truss elements. We
Externí odkaz:
http://arxiv.org/abs/0711.2993
We present an extension of the continuous damage fiber bundle model to describe the gradual degradation of highly heterogeneous materials under an increasing external load. Breaking of a fiber in the model is preceded by a sequence of partial failure
Externí odkaz:
http://arxiv.org/abs/0706.1554