نتایج جستجو برای: composite cylinder tubes
تعداد نتایج: 168921 فیلتر نتایج به سال:
when flow passes over the tube bundles, energy of flow transfers to the tubes. the fluid induced vibrations (fiv) imposed on the tubes is one of the important problems in analyzing the tube bundles and causes several problems. in this work, first, laminar flow around circular cylinder asymmetrically in a channel is simulated. the reynolds number is 20 and 100. the lift forces to tube are not ze...
Background: Tooth damage is one of the most common reasons that patients visit the dentists. Nowadays composites are increasingly used in dentistry because they have the colour of tooth and are more compatible with tooth tissue. Hygroscopic expansion is one of the most reasons that reduce the efficacy of the composite. Main goal of this article is to compare the hygroscopic expansion ...
A heuristic is proposed for a problem that occurs in the design of thick composite cylinders: the selection of the angles of wrap of all the layers forming a cylinder for given material properties and layer thicknesses. The heuristic consists of a local search algorithm that improves on a given initial design by modifying the angle of a single layer in each iteration. Each design is evaluated b...
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