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, the effect of rigidly attached masses on the natural frequencies of a shell is investigated and it is shown that the resonant vibrations of the shell can be excited by a wind load on a thin plate rigid attached to the shell with an added mass.
Abstract: It is established that the effect of rigidly attached masses on the natural frequencies is considerably greater than that of the liquid filling the shell. It is shown that the resonant vibrations of the shell can be excited by a wind load on a thin plate rigidly attached to the shell with an added mass
21 citations
TL;DR: In this article, the Green's function is used to provide a simple, exact and direct analytical method for analysis of a beam structure of generic boundary conditions with attached springs and/or finite masses.
21 citations
TL;DR: In this article, a comprehensive set of experiments was carried out to investigate the effect of the fractal architecture of granular aggregates on the free-fall acceleration through a still water column.
21 citations
TL;DR: In this paper, the authors present the dynamic buckling behavior of spherical shell structures colliding with an obstacle block under the sea, where the effect of deep water has been considered as a uniform external pressure.
Abstract: This paper is the first to present the dynamic buckling behavior of spherical shell structures colliding with an obstacle block under the sea. The effect of deep water has been considered as a uniform external pressure by simplifying the effect of fluid–structure interaction. The calibrated numerical simulations were carried out via the explicit finite element package LS-DYNA using different parameters, including thickness, elastic modulus, external pressure, added mass, and velocity. The closed-form analytical formula of the static buckling criteria, including point load and external pressure, has been firstly established and verified. In addition, unprecedented parametric analyses of collision show that the dynamic buckling force (peak force), mean force, and dynamic force redistribution (skewness) during collisions are proportional to the velocity, thickness, elastic modulus, and added mass of the spherical shell structure. These linear relationships are independent of other parameters. Furthermore, it can be found that the max force during the collision is about 2.1 times that of the static buckling force calculated from the analytical formula. These novel insights can help structural engineers and designers determine whether buckling will happen in the application of submarines, subsea exploration, underwater domes, etc.
21 citations