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friction

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Journal Article
Published: 15 April 2024
Scottish Journal of Geology (2024) 60 (1): sjg2023-016.
... some distance from the point of frictional heating, as previously proposed, as semipelitic rocks are not present at the surface at Stob Mhic Mhartuin but are likely to be present at depth. This transport, and mixing with rhyolite magma, would have provided the time and thermal energy for clast...
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Journal Article
Journal: Geology
Published: 28 February 2024
Geology (2024) 52 (6): 405–410.
... behavior are scarce. We describe frictional-viscous shear zones in the Red River fault, China, which consists of two segments with distinct seismic behaviors and fluid availabilities. The northern segment hosts moderate to large earthquakes, and midcrustal fault slip is localized into mylonitized...
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Journal Article
Published: 21 February 2024
Bulletin of the Seismological Society of America (2024) 114 (3): 1466–1480.
... of sequences of earthquakes and aseismic slip for both compressive and tensile stepovers with off‐fault plasticity. We consider a rate‐and‐state friction law for the fault friction and pressure‐sensitive Drucker–Prager plasticity for the off‐fault bulk response. We observe that the accumulation of plastic...
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Journal Article
Published: 16 February 2024
Bulletin of the Seismological Society of America (2024) 114 (3): 1444–1465.
... properties of seismic sources for estimating expected ground motion. A critical parameter in friction laws is the slip‐weakening distance D C ( Ida, 1972 ), which corresponds to the distance where the stress drops (SDs) from its yield stress to sliding friction (e.g., Palmer and Rice, 1973...
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Journal Article
Published: 01 December 2023
The Seismic Record (2023) 3 (4): 342–356.
... and regional stress inversion (Fig.  1c , Fig. S5). We combine the Mohr–Coulomb theory of frictional failure with dynamic parameters to reduce the ample parameter space of dynamic rupture modeling (e.g., Taufiqurrahman et al. , 2023 ). We construct a 3D Cartesian stress tensor S i j within...
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Journal Article
Published: 03 October 2023
Quarterly Journal of Engineering Geology and Hydrogeology (2023) 56 (4): qjegh2023-022.
... of deformation and P-wave velocity tend to stabilize the rate of reduction for highly and completely weathered rock samples, which does not agree with the trend and higher rate reductions found by other researchers. This stabilization reduction rate with WD was also found for compaction density, friction angle...
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Journal Article
Published: 30 August 2023
Seismological Research Letters (2023) 94 (6): 2575–2585.
... transformation in the south of the Xianshuihe fault zone on the results. The model setting includes the setting of fault geometry, stress distribution, friction law, medium distribution around the fault, and nucleation method. We used the surface fault data of the China earthquake science test site...
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Journal Article
Journal: Geology
Published: 14 August 2023
Geology (2023) 51 (10): 988–992.
... that the post–main shock loading rate increases favored accelerated creep within the matrix, which promoted, as a consequence, seismic instabilities within the lenses in the form of clustered seismicity. Our findings emphasize the strong connection between seismicity and the structural and frictional properties...
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Journal Article
Published: 01 August 2023
American Mineralogist (2023) 108 (8): 1476–1482.
...Hanaya Okuda; Kenji Kawai; Hiroshi Sakuma Abstract To investigate the role of atomic-scale structure on the frictional properties of gibbsite, a dioctahedral-type aluminum hydroxide, we calculated the atomic-scale interlayer shear properties using the first-principles method based on density...
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Journal Article
Published: 01 August 2023
Earthquake Spectra (2023) 39 (3): 1810–1836.
...). CPT generated the possibility of measuring equipment horizontal displacements, slips, rotations, rocking, and toppling responses. The Euler–Lagrange formulation, along with the Stribeck friction model, was used to numerically model the rolling and in-plane rotation behavior of a four-wheel mobile cart...
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Journal Article
Published: 30 June 2023
Bulletin of the Seismological Society of America (2023) 113 (5): 2009–2025.
... conducted using a rate‐ and state‐dependent friction law to investigate the occurrence conditions of episodic aseismic slip events within a fault having uniform velocity‐weakening friction. When the velocity‐weakening zone is much wider than the critical nucleation zone size, a rupture that seismically...
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Journal Article
Published: 21 June 2023
Quarterly Journal of Engineering Geology and Hydrogeology (2023) 56 (3): qjegh2022-103.
... on cutter wear. In considering critical friction, the cutting efficiency and contact stress were determined from the revised drilling model in order to characterize the drilling process. For six types of rock, a series of drilling tests were conducted on three axial directions using a coring bit...
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Journal Article
Published: 10 May 2023
Bulletin of the Seismological Society of America (2023) 113 (5): 1992–2008.
...Jagdish Chandra Vyas; Alice‐Agnes Gabriel; Thomas Ulrich; Paul Martin Mai; Jean‐Paul Ampuero ABSTRACT Frictional heating during earthquake rupture raises the fault‐zone fluid pressure, which affects dynamic rupture and seismic radiation. Here, we investigate two key parameters governing thermal...
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Journal Article
Published: 24 April 2023
Quarterly Journal of Engineering Geology and Hydrogeology (2023) 56 (2): qjegh2022-095.
..., dielectric constant, pH value and temperature. Spagnoli et al. (2012) found that changes in the chemical components of pore fluids affected the microstructures and mechanical properties of clayey soil. As reported by Puri (2010) and Soltani-Jigheh et al. (2018) , the shear strength and friction...
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Journal Article
Published: 05 April 2023
Journal of the Geological Society (2023) 180 (3): jgs2022-085.
... veining showing dilatant offsets picked out by enclave offset (38° 45′ 34.3″ N, 16° 34′ 18.3″ E). ( d ) Deep brittle shears including chloritized cataclasite and frictional melts – pseudotachylytes cut by a later fissure-fill (38° 45′ 44.0″ N, 16° 34′ 11.9″ E). ( e ) Near-surface fissuring and infilling...
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Journal Article
Published: 05 April 2023
The Seismic Record (2023) 3 (2): 69–76.
... energy, but the addition of inelasticity can make it difficult to select parameters and establish suitable initial conditions, and increases the model’s complexity and computational cost. We propose a new method that works by adding a nonlinear radiation damping term to the friction law...
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Journal Article
Published: 17 February 2023
Journal of the Geological Society (2023) 180 (2): jgs2022-037.
... at palaeodepths of 10–15 km, where frictional–viscous deformation synchronous with co-seismic frictional melting led to cycles of millimetre- to decimetre-scale cavity dilation and collapse. Although individual melt-generating slip surfaces may have become rapidly welded, faulting was able to repeatedly localize...
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