華僑大學(xué)畢業(yè)設(shè)計任務(wù)書

1、 畢業(yè)設(shè)計（論文）任務(wù)書本科 10 級 機(jī)電及自動化 學(xué)院 機(jī)械設(shè)計 專業(yè)設(shè)計（論文）題目 學(xué)生姓名 學(xué)號 起訖日期 2014年3月 9日 設(shè)計地點 機(jī)電實驗大樓 指導(dǎo)教師 職稱 2014 年 3 月 7 日 1.畢業(yè)設(shè)計（論文）的目的：通過建立不同梯度變化的蜂窩梁有限元模型，經(jīng)過數(shù)值模擬計算，比較不同梯度變化規(guī)律對梁抗彎性能的影響，從而得出抗彎性能最好的蜂窩結(jié)構(gòu)的變化規(guī)律，應(yīng)用于汽車的輕量化研究和安全性研究當(dāng)中。2.畢業(yè)設(shè)計（論文）任務(wù)的內(nèi)容和要求：根據(jù)蜂窩結(jié)構(gòu)的特點，展開蜂窩結(jié)構(gòu)的抗彎性能的研究，找出具有良好抗彎性能的最佳的蜂窩結(jié)構(gòu)：選取密度或厚度成梯度變化蜂窩結(jié)構(gòu)，研究出抗彎性能最佳的梯

2、度蜂窩結(jié)構(gòu)。在梁進(jìn)行抗彎實驗時都會發(fā)生三層截面的變化：壓縮、剪切和拉伸，針對不同截面的變化，采用梯度蜂窩來改善其抗彎性能。梯度蜂窩可以厚度上從上到下的遞增、遞減或亂序的厚度梯度排布。因此通過比較不同梯度蜂窩的抗彎性能，來找出最佳排布的梯度蜂窩結(jié)構(gòu)，把其應(yīng)用到汽車等上面。3.主要參考文獻(xiàn)：1 胡安生，馮夏勇. 國際汽車工業(yè)的變化趨勢. 汽車情報，2004，24(1): 4-92 王曉，劉星榮，葛如海. 波紋管在汽車碰撞吸能中的正交優(yōu)化設(shè)計. 江蘇理工大學(xué)學(xué)報，2001，22(3): 29-323 McNay I I, Gene H. Numerical modeling of tube cras

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