本文選題：加筋板　切入點(diǎn)：波紋夾層板　出處：《華中科技大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

【摘要】：船舶上設(shè)有直升機(jī)甲板,直升機(jī)起飛、降落以及停放在甲板結(jié)構(gòu)上時(shí),直升機(jī)通過主輪組產(chǎn)生輪印載荷作用于甲板結(jié)構(gòu),這涉及到輪印載荷在板和骨材之間的分配,以及板格結(jié)構(gòu)的強(qiáng)度、穩(wěn)定性及極限承載問題。因此,深入開展輪印載荷分配研究,提出具有實(shí)用性的實(shí)驗(yàn)方法,更加準(zhǔn)確模擬輪印載荷分配是十分必要的。首先,本文開展了加筋板輪印載荷分配的實(shí)驗(yàn)研究。利用薄膜壓力傳感器測試輪印載荷區(qū)域典型位置的接觸壓力,采用電阻式應(yīng)變片測試關(guān)注位置的應(yīng)變,對(duì)比分析了幾種典型輪印位置、輪印大小和輪印橡膠厚度下的輪印載荷分布特性,獲得了加筋板輪印載荷分配特征。之后,基于有限元軟件ANSYS的非線性計(jì)算方法,提出了分析輪印載荷分配的數(shù)值模型,并對(duì)實(shí)驗(yàn)的各種載荷工況進(jìn)行了仿真計(jì)算分析,對(duì)比了各測點(diǎn)的接觸壓力和靜態(tài)應(yīng)變的實(shí)測值與有限元結(jié)果,結(jié)果表明有限元結(jié)果與實(shí)驗(yàn)結(jié)果吻合較好。采用驗(yàn)證了的數(shù)值計(jì)算模型,進(jìn)一步分析了橡膠厚度、硬度、板和加強(qiáng)筋相對(duì)剛度比、輪印大小等參數(shù)對(duì)輪印載荷分布規(guī)律的影響。繼而,進(jìn)一步研究了波紋夾層板輪印載荷分配特征,建立了其數(shù)值分析模型,分析了波紋夾層板上下面板厚、芯層板厚、芯層層高及輪印位置等參數(shù)對(duì)輪印載荷分布規(guī)律的影響,獲得了波紋夾層結(jié)構(gòu)的輪印載荷分布規(guī)律。最后,分析了波紋夾層板條在純彎曲載荷下的極限承載能力,獲得了波紋夾層板條在純彎曲載荷下的失效模式和極限承載能力,并與實(shí)驗(yàn)結(jié)果進(jìn)行了對(duì)比,分析了波紋夾層板條上面板厚度、芯層厚度及下面板厚度對(duì)結(jié)構(gòu)在純彎曲載荷下極限承載能力的影響。本文研究工作為加筋板、波紋夾層板的輪印載荷分配及極限承載能力計(jì)算提供了有益的參考。
[Abstract]:The ship is equipped with a helicopter deck, the helicopter took off, landing and parking on the deck structure, by helicopter main wheel group India wheel load on the deck structure, which relates to the distribution of wheel load India between the plate and the aggregate, and the strength of plate grid structure, stability and ultimate bearing. Therefore, carry out the wheel the load distribution of India, proposed a feasible method, more accurate simulation of India wheel load distribution is very necessary. Firstly, this paper carried out experimental study of stiffened plate printing wheel load distribution. Using the thin film pressure sensor testing contact pressure in typical position of wheel load area of India, the resistance strain gauge testing is concerned the position of the strain, the comparative analysis of several typical printing wheel position, wheel size and the thickness of rubber wheel India India India under the wheel load distribution characteristic, obtained the stiffened plate wheel load distribution characteristics of India. After the calculation method of nonlinear finite element software ANSYS based on the proposed numerical model analysis of wheel load distribution of India, and the various loading conditions were simulated, compared each measuring point of contact pressure and static strain measurements and finite element results, the results show that the finite element results are in good agreement with the experiment results. A numerical calculation model is verified, further analysis of the rubber thickness, hardness, plate and stiffener relative stiffness ratio, influence of size parameters on the wheel wheel India India load distribution. And then, further study of the corrugated sandwich plate printing wheel load distribution characteristics, the numerical analysis model is established, corrugated sandwich the board under the panel thickness of core layer thickness, core layers of high and round printing position parameters on the wheel load distribution in India, obtained the corrugated sandwich structure of wheel load distribution. Finally, india, Analysis of the bearing capacity of corrugated sandwich panels in the limit under pure bending load, the corrugated sandwich slab under pure bending load failure mode and ultimate bearing capacity, and compared with the experimental results, the thickness of corrugated sandwich panel strip of core layer thickness and panel thickness of the bearing capacity of the structure in the under pure bending load limit. This research work for the stiffened plate, provides a useful reference for calculation of corrugated sandwich plates printing wheel load distribution and ultimate bearing capacity.

【學(xué)位授予單位】：華中科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：U661.43

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