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Zigzag high-damping alloy board based on interfacial effect

A high damping alloy, interface effect technology, applied in metal layered products, vehicle parts, layered products, etc., can solve problems such as differences, and achieve the effect of simple structure, high ignition point and strong fire resistance

Active Publication Date: 2017-03-15
HARBIN ENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Literature 2 mainly takes the vibration control of aircraft structure as the research goal. Under the condition of strictly controlling the amount of pasting materials and the weight of the installed damper, the variable density topology optimization method is used to solve the layout optimization problem of the constrained layer and damping layer of the constrained damping plate structure. Research, for the damper position and parameter optimization problem in the vibration system, a step-by-step optimization method is proposed, considering the influence of the damper's own weight, the position sensitivity of the general damping structure modal damping ratio is analyzed, and the damper position optimization model is established , to solve the problems of laying constrained damping materials reasonably and effectively arranging dampers on complex structures, and realize the optimal design of dynamic performance of complex structures, which is quite different from this patent

Method used

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  • Zigzag high-damping alloy board based on interfacial effect
  • Zigzag high-damping alloy board based on interfacial effect
  • Zigzag high-damping alloy board based on interfacial effect

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Embodiment 1

[0022] Example 1: Combining Figure 1 to Figure 4 , the zigzag high damping alloy plate based on the interface effect of the present invention is composed of an upper metal layer 1, a middle metal layer 2 and a base metal layer 3, the material of the upper metal layer and the base metal layer is iron powder, and the material of the middle metal layer is Chromium powder, aluminum powder or a mixture of chromium powder and aluminum powder, that is, the present invention uses iron powder, chromium powder and aluminum powder as raw materials, adopts hot pressing and sintering to prepare layered iron-based damping plates with different composition interfaces and layer thickness ratios, The material type of the metal layer in the present invention can be determined by the specific environment where the high damping plate is located and the main functions it undertakes, and common metal materials such as iron, aluminum and chromium can be selected. If the working environment or funct...

Embodiment 2

[0023] Embodiment 2: Based on the above-mentioned embodiments, the interface between the upper metal material and the base metal material of the present invention is designed in a zigzag shape, and all the teeth are rough tooth surfaces 4 . Target the vibration characteristics of the protective structure to determine the structural size of the zigzag high-damping alloy plate. When low-frequency structural vibration is the main suppression object, the width-to-height ratio of the sawtooth should be appropriately larger, that is, the sawtooth of the middle metal layer is slightly blunter, and the sawtooth angle Greater than 90 degrees; when high-frequency structural vibration is the main object of suppression, the sawtooth width-to-height ratio should be appropriately smaller, that is, the sawtooth of the middle metal layer is slightly sharper, and the sawtooth angle is less than 90 degrees, preferably less than 60 degrees; such as structural vibration protection When the require...

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Abstract

The invention provides a zigzag high-damping alloy board based on interfacial effect. Through hot-pressing sintering, a three-layer structure having different component interfaces and layer thickness ratio is prepared, wherein the three-layer structure includes, from top to bottom, an upper metal layer, a middle metal layer, and a base metal layer, wherein the upper metal layer and the base metal layer are made from iron powder, while the middle metal layer is made from chromium powder, aluminum powder or a mixture comprising the both. The alloy board is available for wall boards of cabins in ships and marine engineering structures, which have extreme-high fireproof demand and has certain demand on vibration noise performance, and for non-strength supporting structure board frameworks in the ships and marine engineering structures. The alloy board can effectively alleviate structural vibration and reduce noise in cabins.

Description

technical field [0001] The invention relates to a zigzag high-damping alloy plate based on interface effects, which belongs to the field of vibration reduction and fire prevention of ships and marine engineering structures. Background technique [0002] Whether it is a surface ship, an ocean engineering structure or an underwater submarine, it is not only subjected to static loads but also strong dynamic loads during navigation and work, often in harsh environments, subject to strong vibrations and Impact, high-decibel noise and harsh weather conditions lead to reduced structural life, instrument failure, and a series of serious accidents. For submarines, structural vibration is the root cause of underwater noise, and excessive underwater noise will completely expose the hull to the enemy's sonar detection range, greatly weakening the vitality of the submarine. When the ship structure vibrates, the energy propagates in the form of vibration waves from the power equipment in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B3/28B32B15/01B32B15/18B32B15/20B32B33/00
CPCB32B3/28B32B15/012B32B33/00B32B2307/102B32B2307/3065B32B2307/73B32B2307/754B32B2605/12
Inventor 庞福振吴闯缪旭弘王雪仁贾地李硕李海超马建强沈喆杜圆
Owner HARBIN ENG UNIV