The purpose of the study is to experimentally determine the dynamic coefficient of dry friction between different materials under vibrations due to the initial deflection. The principle of dry friction between the grillage and the foundation is used for the seismic isolation of building...
Coulomb friction is a constant opposing force independent of velocity. • Viscous friction is proportional to velocity, and it is zero when velocity is null. • Stiction is defined as the torque required to start a motion from rest, and it is greater than the Coulomb dynamic friction. •...
Design procedures for tall buildings with dynamic modification devices Friction (coulomb) dampers Depending on the distribution of friction dissipating devices along the building height, the frictional forces required for the design can be independently estimated using the effective supplemental damping ratio...
T.Ligurský(CharlesUniversity,Prague)3DContactProblemswithCoulombFrictionOPTPDE20082/38 Motivation OneusuallyassumesthatthecoefficientoffrictionFincontact problemsisaconstantoritdependsonthespatialvariable. ButinmanysituationsFdependsonthevelocityofthetangential contactdisplacements(inquasistaticanddynamicproblems). ...
美 英 un.库仑摩擦 网络库伦摩擦;库仑磨擦;用库伦摩擦 英汉 网络释义 un. 1. 库仑摩擦 例句
through time (see also Fig.3bfor an example from a single time-slice). Note that no dynamic nor post-seismic stress changes are considered in this study, because the time between earthquakes is typically longer than timescales over which dynamic stress triggering will play a role41, the magnit...
Dynamic modeling of the 1992 Landers earthquake. J. of Geo. Res.: Solid Earth 106(B11), 26467–26482 (2001). Mulargia, F. & Bizzarri, A. Earthquake friction. Physics of the Earth and Planetary Interiors 261, 118–123 (2016). Article ADS Google Scholar Sabadini, R., Vermeersen, B...
Complete coulomb failure stress due to earthquake is generally divided into static coulomb stress failure and dynamic coulomb stress failure (Kilb et al., 2002). The former focus on the triggering effects of static stress changes due to permanent fault dislocation, while the later focus on the ...
3.10(c). The existence of surface contamination bonded to the surfaces can account not only for dynamic friction that is independent of the commensurabilty of the interface, but also for static friction. Sign in to download full-size image Fig. 3.10. Schematic diagrams showing (a) two ...
2. A modal superposition method for the dynamic analysis of a structure with coulomb friction is presented. 应用振型叠加法对具有库仑摩擦力的结构进行动力分析 ,用假想力矢量表示因摩擦力引起的非线性 ,用有限元求解运动方程。补充资料:库仑定律 库仑定律Coulomb's law 静止点电荷相互作用的规律。1785年,C...