... velocity dynamics poroelastic theory seismic engineering Ministry of Science and Technology, Taiwan 108-2628-E-005-001-MY3 This work was supported by the Ministry of Science and Technology, Taiwan under Award No. 108-2628-E-005-001-MY3. The authors gratefully acknowledge such support...

.... In seismic designs, the stability is generally verified without accounting for the variation of the interface friction. The following paper presents a newly designed dynamic pull-out machine. The machine permits the creation of dynamic vibrations while remaining in tension at frequencies in the range of 0·1...

...M. Ju; Y. Hao; Z. Guo; H. Xing Three types of rock were chosen to investigate the effect of mineral mesoscopic structure on rock fragmentation under dynamic compression. The fragments collected from the tested sandstones and granites were studied using an image-processing method...

...Z. H. Khan; G. Cascante; R. E. Ahmed Resonant column (RC) is a standard laboratory test for the dynamic characterization of soils. Mass polar moment of inertia (MPMI) of the drive plate of RC is required for the solution of equation of motion for a specimen-mass system in RC. In standard procedure...

...Y. Song; Y. Wang; Q. Chen; M. Gao A study of the effects of degree of saturation on the nearly saturated ground dynamic response caused by moving of high-speed trains is presented. The soil medium is assumed as an isotropic nearly saturated half-space. Dynamic governing equations of nearly...

...−strain histories, recorded at the local level, are used to estimate the real variation of soil shear modulus and material damping characteristics induced by earthquakes of different seismic intensity. The results from dynamic finite-element simulations of a specific site indicate that the frequency...

...X. Li; Y. Xu; K. Xia The dynamic tensile stress–strain behaviour is desirable in evaluating the stability of geo-structures subjected to dynamic loading. However, the dynamic direct pull test is rather difficult to conduct due to experimentation difficulties; its common alternative the traditional...

... for calculating the peak strength and peak strain. The results showed that the peak strength and peak strain under various confining pressures increase with the cumulative U_e, cumulative U_d and cumulative U_o. dynamics laboratory tests rocks/rock...

...S. Liu; J. Xu; T. Chen; P. Wang The split Hopkinson pressure bar (SHPB) test is widely used for the characterisation of materials through dynamic stress measurement. A persistent problem with this technology is a lack of refined projectile loading rate control, for which an effective method...

... mode. Fig. 3. Macroscopic fracture modes of marble under various strain rates (a) 65·1 S⁻¹; (b) 95·0 S⁻¹; (c) 101·4 S⁻¹; (d) 115·2 S⁻¹ and (e) 123·8 S⁻¹ The most significant difference between the dynamic behaviour of rock-like...

...P. Aminpour; K. J. Sjoblom To understand the relationship between microscopic variables and macroscopic engineering properties of kaolinite particles, a molecular dynamics simulation of triaxial shear tests was developed. The calculations were based on a coarse-grained representation of kaolinite...

... 2017 31 03 2019 01 04 2019 ICE Publishing: all rights reserved 2019 constitutive relations dynamics sands Sand, as a particulate material, exhibits a highly non-linear stress−strain response, with stiffness dropping significantly on shearing. In cyclic shearing...

...Q. Wang; B. Wu; Y. Guo In this paper, a traditional split Hopkinson pressure bar system is modified to be able to conduct dynamic tests on rock specimens under triaxial stress conditions. Granite specimens are manufactured as Brazilian discs to examine the dynamic tensile failure of rocks...

...S. Nakamoto; N. Iwasa; J. Takemura A rock bolt with a facing plate is one of the soil nailing methods against relatively shallow sliding failure, which can be applied to natural slopes without cutting trees. In this research, dynamic centrifuge model tests were conducted to study the reinforcement...

...F. Schnaid; D. Lourenço; E. Odebrecht The purpose of this paper is to introduce a method developed to calculate the dynamic penetration resistance q_d from penetration tests without the need to resort to empirical or adjustment factors. From wave propagation analysis...

.... By measuring the dynamic response of barrier cables, no obvious peak impact load was captured. The shear strength of dry granular flow results in an attenuating pileup impact mechanism. It is apparent that the geometry of the debris front has a strong influence on impact response. In addition, as debris...

... structure. This study aims to clarify the effect of flexibility ratio on the dynamic response of rectangular structures buried in dry sand. For that purpose, a series of dynamic centrifuge tests were conducted on two types of box-shaped models with different rigidities under various harmonic motions...

...C. O'Beirne; C. D. O'Loughlin; C. Gaudin The soil response in the wake of dynamically installed (free-fall) projectiles is poorly understood, notably with respect to the potential for the hole the projectile creates during dynamic penetration to remain open. The work reported in this paper...

...S. Zhu; G. Yang; Y. Wen; L. Ou To provide a more reliable material property description for seismic analyses of high rockfill dams, this study investigates the dynamic properties of gravels under high confining pressures. The dynamic shear moduli G and damping ratios D of 12...

... comprised particles of realistic shapes that break into more realistically shaped fragments compared with the fragments with defined shapes in the PBM. 28 01 2014 11 03 2014 21 04 2014 ICE Publishing: all rights reserved 2014 discrete-element modelling dynamics failure mining...