Modeling of Hydrostatic Pressure Effect on Progressive Damage in Particulate Composites
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Abstract Hydrostatic pressure affects the damage growth in a particulate composite. As a result, an analytical model was presented to represent the damage growth in a particulate composite under various hydrostatic pressures. The model was based on a multi-level approach with damage description at the micro-level. A damage theory was presented to describe the material behavior under hydrostatic pressure. The predicted stress-strain curves compared well with the experimental measurements. Furthermore, the initial crack size at a notch tip was studied with and without hydrostatic pressure.Keywords:
Hydrostatic pressure
Hydrostatic equilibrium
Hydrostatic stress
In this paper, it studied the static properties of hydrostatic thrust bearings combined the effects of recess depth, fluid inertia and couple stress. It is found that couple stress and centrifugal inertia has notable effects on the static properties of hydrostatic thrust bearing.
Hydrostatic equilibrium
Thrust bearing
Hydrostatic stress
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For DVT500 vertical lathe of the carrying capacity of heavy hydrostatic bearing problem, Through the simplification of the geometric model of a single oil pad to derive the effective bearing area of a single oil pad, then establish its mathematical model, for the following to prepare for the simulation of heavy hydrostatic bearing, and through the simulation of heavy hydrostatic bearing, get the input under the condition of unchanged, with the constant improvement of the speed, the change of heavy hydrostatic bearing pressure field. Results show that the feed quantity under the condition of unchanged, with the constant improvement of the speed, start from the center of the biggest oil cavity pressure peak around gradually diminishing, isobar and high oil and shape of cavity shape basically the same. Numerical calculation results reflect the inside of the bearing pressure distribution, the simulation results for the engineering practice the bearing oil cavity structure optimization design provides a theoretical basis.
Hydrostatic equilibrium
Hydrostatic stress
Hydrostatic pressure
Constant (computer programming)
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Abstract Hydrostatic pressure affects the damage growth in a particulate composite. As a result, an analytical model was presented to represent the damage growth in a particulate composite under various hydrostatic pressures. The model was based on a multi-level approach with damage description at the micro-level. A damage theory was presented to describe the material behavior under hydrostatic pressure. The predicted stress-strain curves compared well with the experimental measurements. Furthermore, the initial crack size at a notch tip was studied with and without hydrostatic pressure.
Hydrostatic pressure
Hydrostatic equilibrium
Hydrostatic stress
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The line width dependence of stress in damascene Cu was examined experimentally as well as with a numerical simulation. The measured hydrostatic stress was found to increase with increasing line width. The larger stress in an interconnect with large dimension is attributed to the larger grain size, which induces higher growth stress in addition to thermomechanical stress. A stress model based on microstructure was constructed and the contribution of the growth and thermal stress of the damascene lines were quantified using finite element analysis. It was found that the stress of the via is lower than that of wide lines when both the growth stress and thermal stress were considered. Therefore, the characteristic failure mode, i.e. voiding in a via neighboring a wide line, was successfully explained by our stress model.
Hydrostatic stress
Stress relaxation
Hydrostatic equilibrium
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Hydrostatic equilibrium
Hydrostatic stress
Hydrostatic pressure
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Hydrostatic pressure
Hydrostatic equilibrium
Hydrostatic stress
Hydrostatic test
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Hydrostatic equilibrium
Hydrostatic stress
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Hydrostatic equilibrium
Hydrostatic stress
Internal stress
Matrix (chemical analysis)
Hydrostatic pressure
Plane stress
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Hydrostatic stress
Hydrostatic equilibrium
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Hydrostatic pressure
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Abstract Hydrostatic pressure affects the damage growth in a particulate composite. As a result, an analytical model was presented to represent the damage growth in a particulate composite under various hydrostatic pressures. The model was based on a multi-level approach with damage description at the micro-level. A damage theory was presented to describe the material behavior under hydrostatic pressure. The effect of hydrostatic pressure was introduced to the damage theory through the damage function that was assumed to be a function of both deviatoric and volumetric strain energy densities. The predicted stress-strain curves with hydrostatic pressure compared well with the experimental data. Furthermore, the initial crack size at a notch tip was studied with and without hydrostatic pressure. The initial crack size determined from the computer modeling and simulation agreed well with the measured data with or without hydrostatic pressure.
Hydrostatic pressure
Hydrostatic equilibrium
Hydrostatic stress
Ambient pressure
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