In order to study the dynamic response of LNG storage tank under action seismic load and isolation effect lead-core rubber bearing, this paper establishes experimental model with reference structural form large-scale tank, test is obtained using a shaking table test. Simplified mechanical models non-isolated isolated tanks are proposed responses corresponding calculated Newmark-beta method. Und...

The widespread application of superconducting magnetic levitation bearings is limited by their relatively low stiffness. Recently we investigated a novel thrust bearing geometry comprised conical frustum (or truncated cone) shaped permanent magnet levitating inside matching tapered hole machined into high-temperature superconductor bulk. This configuration was found to produce superior restorin...

During oilfield development, there exist multi-cycle gas–water mutual displacement processes. This means that a cycling process such as water driving gas–gas driving water–water driving gas is used for the operation of injection and production in a single well (such as foam huff and puff in single well or water-bearing gas storage). In this paper, by using coreand micro-pore scales model, we st...

the objective of this paper is to present a new method for protecting the lives of residents in catastrophic earthquake failures of unreinforced masonry buildings by introducing some safe rooms within the buildings. the main idea is that occupants can seek refuge within the safe rooms as soon as the earthquake ground motions are felt. the information obtained from the historical ground motions ...

In northern forests, winter is the preferred time for logging operations, since, when wet soils freeze, their strength increases, which ensures a high load-bearing capacity of forest roads and reduces cost forestry work by increasing load on equipment, including driving through frozen lowlands. The present article analyzes loamy–sandy soil, which, at subzero temperatures, behaves like brittle m...

Static stiffness measurement of precision bearing components by influence coefficients is complicated by the task of loading and measuring the baseline test fixture stiffness before including the bearing components. Furthermore, as the displacement of the bearing system is measured for various load conditions, the stiffness of high quality bearings may be difficult to distinguish from the test ...

Deep foundations are essential for the soft soil deposits that ubiquitous in Nordic countries. Precast driven displacement piles commonly used, due to ease of installation and their low cost. The stiffness strength clay surrounding will change during after pile process. This paper presents an effective stress based numerical framework elaborates set-up ageing mechanisms observed empirically. Fo...

Non-contact rotor position sensors are an essential part of control systems in magnetically suspended high-speed drives. In typical active magnetic bearing (AMB) levitated machine applications, the displacement mechanical air gap is measured with commercially available eddy current-based sensors. The aim this paper to propose a robust and compact three-dimensional sensor that can measure AMB sy...

Steel-strip reinforced earth walls stabilize through the pullout resistance of reinforcements. Soil dilation during ribbed reinforcements may contribute to evolution resistance; however, few studies have clarified this mechanism by investigating how soils behave with increasing displacement. The ribs enhance resistance, although influence rib dimensions on displacement has not been sufficiently...