Topic
Added mass
About: Added mass is a research topic. Over the lifetime, 2849 publications have been published within this topic receiving 47899 citations.
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TL;DR: In this paper, an analytical and numerical study of the transient dynamics of a beam-mass system carrying multiple masses moving along an initially curved beam is presented, where an attention is given to the phenomena arising due to the initial curvature, initial imperfection, and the motion produced by the existence of multiple moving masses.
14 citations
27 Jan 2011
TL;DR: In this paper, the horizontal and vertical components of the fluid force and pressure acting on a girder bridge due to tsunami like a solitary wave are measured in a hydraulic experiment and their characteristics are discussed.
Abstract: The horizontal and vertical components of the fluid force and pressure acting on a girder bridge due to tsunami like a solitary wave are measured in a hydraulic experiment and their characteristics are discussed. The peak of the impact fluid force is estimated on the basis of the change in the added mass of the structure. The wave pressure acting on the seaward side of the girder of the bridge is also estimated. The critical force for the stability of the girder bridge is estimated as the strength of bolts used in the shoes against shear stress.
14 citations
TL;DR: In this article, the fundamental frequency of a beam carrying a mass at various positions has been derived in terms of the mass ratio of the beam with various end conditions, and an alternative expression for the beam's fundamental frequency has been proposed.
14 citations
TL;DR: In this paper, a block DEM-SPH model is proposed to simulate rigid landslide and its generated waves, where the solid particles in Tan and Chen [35] are replaced with blocks and a virtual mass force is also incorporated.
Abstract: In this paper, we substitute the solid particles in Tan and Chen [35] with blocks and propose a block DEM-SPH model aimed to study rigid landslide and its generated waves. Moreover, in addition to the buoyant and drag forces to account for landslide-water interaction, a virtual mass force is also incorporated. In this model, rigid slide motion is modeled by block DEM and tsunami waves are modeled by SPH. The blocks in DEM are resolved based on a multi-sphere approach and the novelty is that the discs attached to the block serve as DEM particles for contact force as well as SPH particles for repulsion force. For validation, block DEM is validated against the analytical solution and parametric sensitivity analyses are also conducted to test the model response on varied parameters. SPH is validated against the solitary wave experiment. Finally, the block DEM-SPH model is used to replicate the experiments of Heinrich [13] and Heller et al. [14] . Both slide kinematics and wave profiles can be reasonably reproduced if the drag and added mass coefficients (along with block friction angle) are properly selected. Some of these experiments were not well simulated in the past, particularly the rigid slide motion.
14 citations
TL;DR: In this article, the stability of a cantilever column, carrying a concentrated mass at the free end and resting on an elastic foundation of the Winkler-type, subjected to uniformly distributed in-plane follower forces is studied by Timoshenko beam theory finite elements.
Abstract: The stability of a cantilever column, carrying a concentrated mass at the free end and resting on an elastic foundation of the Winkler-type, subjected to uniformly distributed in-plane follower forces is studied by “Timoshenko beam theory” finite elements In order to more quickly and efficiently obtain the critical load for such a nonconservative system, a simple and cost-effective numerical technique which utilizes the eigenvalue sensitivity with respect to the follower force is introduced instead of the conventional trial-and-error technique The high accuracy and rapid rate of convergence through the combination of the present finite element model and the solution technique are demonstrated with the numerical example given The influence of some system parameters on the critical load is also discussed
14 citations