本文選題：負(fù)泊松比材料　切入點(diǎn)：蜂窩結(jié)構(gòu)　出處：《上海交通大學(xué)》2014年碩士論文　論文類型：學(xué)位論文

【摘要】：減振降噪及抗爆安全性設(shè)計(jì)技術(shù)是軍用艦艇隱身性能與生命力設(shè)計(jì)重要研究方向，，具有重要理論和工程應(yīng)用價(jià)值。艦艇常規(guī)減振抗沖擊結(jié)構(gòu)型式及結(jié)構(gòu)材料研究至今，已難有大突破，必須考慮創(chuàng)新的結(jié)構(gòu)型式與特殊材料。蜂窩多孔材料具有重量輕、抗沖擊、隔熱和隔聲性能優(yōu)良等優(yōu)點(diǎn)，常作為芯材使用，較少作為承載主結(jié)構(gòu)。本論文提出并設(shè)計(jì)了可作為主承載結(jié)構(gòu)的具有宏觀正泊松比效應(yīng)和宏觀負(fù)泊松比效應(yīng)的新型船用蜂窩隔振器及隔振基座。從強(qiáng)度、剛度、動(dòng)力學(xué)特性及振級(jí)落差等角度，探討了兩種蜂窩隔振器和隔振基座的減振效果。對(duì)船舶新型宏觀負(fù)泊松比效應(yīng)蜂窩隔振器或基座的形狀及尺寸設(shè)計(jì)方法開展研究，探討了蜂窩壁厚和形狀參數(shù)對(duì)基座或隔振器整體隔振性能影響。其次，建立蜂窩夾芯隔振器動(dòng)力學(xué)優(yōu)化設(shè)計(jì)模型，優(yōu)化結(jié)果證明了形狀參數(shù)影響曲線的有效性，可供負(fù)泊松比蜂窩夾芯船舶隔振器的設(shè)計(jì)參考。對(duì)采用鋼面板和復(fù)合材料面板的該類組合結(jié)構(gòu)減振器及基座的力學(xué)性能也進(jìn)行了對(duì)比研究。 抗爆抗沖擊性能作為軍艦生命力的一個(gè)重要指標(biāo)，各國(guó)海軍和研究人員都進(jìn)行了大量的研究，從最初的單層防護(hù)結(jié)構(gòu)到多層防雷艙結(jié)構(gòu)再到各種新型夾層結(jié)構(gòu)，艦艇抗爆性能有了質(zhì)的飛越。楊德慶提出了一種具有宏觀負(fù)泊松比效應(yīng)的新型蜂窩舷側(cè)防護(hù)結(jié)構(gòu)，本文對(duì)水下接觸爆炸環(huán)境下該新型防護(hù)結(jié)構(gòu)抗爆性能進(jìn)行了研究。首先對(duì)比研究了蜂窩防護(hù)結(jié)構(gòu)與無夾芯雙層板防護(hù)結(jié)構(gòu)、單層板防護(hù)結(jié)構(gòu)之間的抗爆性能差異。其次，分析了正泊松比蜂窩防護(hù)結(jié)構(gòu)和負(fù)泊松比效應(yīng)蜂窩防護(hù)結(jié)構(gòu)的損傷過程，分為四個(gè)階段并進(jìn)行了對(duì)比。最后，對(duì)比研究了不同蜂窩芯材料以及蜂窩胞元層數(shù)對(duì)防護(hù)結(jié)構(gòu)抗爆性能的影響，從而為蜂窩材料和蜂窩層數(shù)的設(shè)計(jì)選取提供指導(dǎo)。
[Abstract]:The design technology of vibration and noise reduction and anti-explosion safety is an important research direction of stealth performance and vitality design of military ships, and has important theoretical and engineering application value. It is difficult to make a breakthrough, so it is necessary to consider innovative structural forms and special materials. Honeycomb porous materials have the advantages of light weight, shock resistance, heat insulation and sound insulation, and are often used as core materials. This paper presents and designs a new type of honeycomb vibration isolator and isolation base with macroscopical positive Poisson's ratio effect and macro negative Poisson's ratio effect which can be used as main bearing structure. In this paper, the vibration absorption effects of two kinds of honeycomb isolators and isolation bases are discussed from the angle of dynamic characteristics and vibration level drop. The shape and size design methods of the new macroscopically negative Poisson's ratio effect honeycomb isolators or bases are studied. The effects of honeycomb wall thickness and shape parameters on the overall vibration isolation performance of the base or isolator are discussed. Secondly, the dynamic optimization design model of the honeycomb sandwich isolator is established, and the optimization results prove the effectiveness of the shape parameter influence curve. It can be used as a reference for the design of negative Poisson's ratio honeycomb sandwich ship vibration isolator. The mechanical properties of the shock absorber and base of this kind of composite structure with steel panel and composite panel are also studied. As an important index of the vitality of warships, the anti-explosion and shock resistance performance has been studied by the navies and researchers of many countries, from the original single-layer protective structure to the multi-layer lightning proof cabin structure to various new sandwich structures. The anti-explosion performance of the warship has a qualitative overflight. Yang Deqing proposed a new type of honeycomb side protection structure with macroscopic negative Poisson's ratio effect. In this paper, the anti-explosion performance of the new protective structure under underwater contact explosion is studied. Firstly, the difference between honeycomb protective structure and sandwich double-layer plate structure and single-layer plate protection structure is compared. The damage process of positive Poisson's ratio honeycomb protective structure and negative Poisson's ratio effect honeycomb protective structure is analyzed, which is divided into four stages and compared. The effects of different honeycomb core materials and the number of honeycomb cell layers on the anti-explosion performance of the protective structure were studied, thus providing guidance for the design and selection of honeycomb materials and honeycomb layers.
【學(xué)位授予單位】：上海交通大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：U674.70

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