نتایج جستجو برای: magnetorheological engine mount
تعداد نتایج: 89593 فیلتر نتایج به سال:
Abstract It is envisaged that future civil aero-engines will operate with ultra-high bypass ratios to reduce the specific fuel consumption. To achieve expected benefits from new engine cycles, these powerplants may mount compact nacelles. For configurations aerodynamic coupling between powerplant and airframe increase. this reason, it required quantify further understand effects of aircraft int...
In this paper, a semi-active nonlinear artificial intelligence compound controller for marine engines was developed to improve vibration reduction characteristics across wide frequency range. A mathematical model and investigated two-stage isolation systems (Virgin IslandsS) considering vertical, roll, pitch motion. The passive of the magnetorheological damper also integrated with VIS. numerica...
Abstract This paper presents experimental and numerical CFD studies of the aerodynamics a turbine rear structure (TRS). The TRS test geometry is an engine-realistic state-of-the-art design with polygonal outer case, recessed engine mount bumps, three different vane types: regular vanes, bump vanes in sectors, thick vanes. Using sector types simultaneously was found to be crucial for inlet bound...
Contraction and expansion flows of magnetorheological fluids occur in a variety of smart devices. It is important therefore to learn how these flows can be controlled by means of applied magnetic fields. This paper presents a first investigation into the axisymmetric flow of a magnetorheological fluid through an orifice (so-called abrupt contraction flow). The effect of an external magnetic fie...
One of the newly developed methods for obtaining super finished surfaces for freeform is Magnetorheological finishing (MRF). MRF is an advanced finishing process in which the grinding force is controlled by magnetic field. The material removal in MRF is governed by the magnetorheological fluid which mainly consists of carbonyl iron (CI), abrasives particles, carrier fluids and additives. MRF pr...
We report on magnetorheological finishing (MRF) spotting experiments performed on glasses and ceramics using a zirconia-coated carbonyl-iron (CI)-particle-based magnetorheological (MR) fluid. The zirconia-coated magnetic CI particles were prepared via sol-gel synthesis in kilogram quantities. The coating layer was approximately 50-100 nm thick, faceted in surface structure, and well adhered. Co...
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