本文選題：金屬面夾芯板 + 環(huán)境影響因素��； 參考：《哈爾濱工業(yè)大學(xué)》2013年碩士論文

【摘要】：隨著世界工業(yè)化的不斷發(fā)展，金屬面夾芯板的應(yīng)用范圍變得越來越廣泛，包括建筑墻面板、屋面板和飛機(jī)與輪船的重要板件。其優(yōu)越的輕質(zhì)，高強(qiáng)度，安全可靠性能得到了人們的廣泛認(rèn)可。在上個世紀(jì)五十年代，金屬面夾芯板僅用于航空航天領(lǐng)域，自上世紀(jì)七十年代以來，金屬面夾芯板就已經(jīng)開始應(yīng)用于國外的建筑工程，我國自改革開放以來，金屬面夾芯板的應(yīng)用也逐漸增多。 在金屬面夾芯板正常使用中，其力學(xué)性能往往受外界環(huán)境因素的影響，包括溫度、濕度、陽光輻射、化學(xué)與生物作用等。國內(nèi)外學(xué)者已對金屬面夾芯板的各項力學(xué)性能做過大量研究，，但對環(huán)境因素影響下的金屬面夾芯板力學(xué)性能研究還存在諸多不足。本文根據(jù)國外相關(guān)試驗數(shù)據(jù)和國內(nèi)實際工程，對金屬面夾芯板在時間，溫度，濕度，陽光輻射影響下的力學(xué)性能進(jìn)行研究。 本文利用能量法推導(dǎo)金屬面夾芯板抗彎承載力公式（皺曲強(qiáng)度公式），在考慮芯材彈性模量隨芯材厚度變化的情況下，建立抗彎承載力和芯材墊層應(yīng)力（芯材抗拉與抗壓強(qiáng)度）的關(guān)系，根據(jù)國外對金屬面夾芯板的試驗數(shù)據(jù)，分析在長期環(huán)境作用下夾芯板抗拉強(qiáng)度變化的機(jī)理與規(guī)律，結(jié)合推導(dǎo)所得金屬面夾芯板的抗彎承載力與芯材抗拉強(qiáng)度的關(guān)系式，將長期環(huán)境因素的影響考慮到金屬面夾芯板抗彎承載力中，并通過試驗數(shù)據(jù)驗證該公式的可靠性，該公式比現(xiàn)行金屬面夾芯板規(guī)范更全面與安全的考慮環(huán)境因素與時間的影響，并為分析金屬面夾芯板發(fā)生皺曲時的跨中撓度與外表面控制溫度提供理論。 結(jié)合實際工程中金屬面夾芯板的破壞情況，對金屬面夾芯板承受短期環(huán)境因素作用進(jìn)行試驗研究，根據(jù)工程特點，在試驗中模擬工程中端部約束作用，分析在環(huán)境因素與端部約束共同作用下金屬面夾芯板的力學(xué)性能。推導(dǎo)與模擬在短期環(huán)境因素作用下，金屬面夾芯板板面應(yīng)力與跨中撓度的計算公式，求解金屬面夾芯板發(fā)生皺曲時的跨中撓度與板面控制溫度公式，從而能更加貼合實際的分析使用過程中金屬面夾芯板的力學(xué)性能，對存在破壞危險的板件及時采取措施。
[Abstract]:With the development of world industrialization, the application of metal sandwich panels has become more and more extensive, including building wall panels, roof panels and important panels for aircraft and ships. Its superior lightweight, high strength, safe and reliable performance has been widely recognized. In the 1950s, metal sandwich panels were only used in the field of aerospace. Since the 1970s, metal sandwich panels have been used in construction projects abroad. The application of metal sandwich panel is also increasing. In the normal use of metal sandwich panels, their mechanical properties are often affected by external environmental factors, including temperature, humidity, sunlight radiation, chemical and biological effects and so on. Scholars at home and abroad have done a lot of research on the mechanical properties of metal sandwich panels, but there are still many deficiencies in the study of mechanical properties of metal sandwich panels under the influence of environmental factors. In this paper, the mechanical properties of metal sandwich panels under the influence of time, temperature, humidity and sunlight radiation are studied according to the relevant test data and practical projects at home and abroad. In this paper, the formula of flexural strength (wrinkle strength formula) of metal sandwich panel is derived by energy method. When the elastic modulus of core material changes with the thickness of core material, The relationship between flexural bearing capacity and core cushion stress (core tensile strength and compressive strength) is established. Based on the experimental data of metal sandwich panel in foreign countries, the mechanism and law of the change of tensile strength of sandwich panel under long-term environment are analyzed. Combined with the relationship between the bending capacity of metal sandwich panel and the tensile strength of core material, the long-term environmental factors are taken into account in the bending bearing capacity of metal sandwich panel, and the reliability of the formula is verified by experimental data. The formula considers the influence of environmental factors and time more comprehensively and safely than the current standard of metal sandwich panel, and provides a theory for analyzing the midspan deflection and outer surface control temperature of metal sandwich panel when wrinkling occurs. Combined with the failure situation of metal sandwich panel in actual engineering, the effect of short term environmental factors on metal sandwich panel is studied experimentally. According to the characteristics of the project, the end restraint effect is simulated in the test. The mechanical properties of metal sandwich panel under the action of environmental factors and end constraints are analyzed. Under the action of short-term environmental factors, the calculation formulas of stress and midspan deflection of metal sandwich panel are deduced and simulated, and the formula of midspan deflection and control temperature of metal sandwich panel when wrinkling occurs is solved. Therefore, the mechanical properties of the metal sandwich panel can be analyzed more closely with the actual situation, and timely measures can be taken to deal with the damage danger of the metal sandwich panel.
【學(xué)位授予單位】：哈爾濱工業(yè)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2013
【分類號】：TU39

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