華僑大學畢業(yè)設計任務書

1、 畢業(yè)設計（論文）任務書本科 10 級 機電及自動化 學院 機械設計 專業(yè)設計（論文）題目 學生姓名 學號 起訖日期 2014年3月 9日 設計地點 機電實驗大樓 指導教師 職稱 2014 年 3 月 7 日 1.畢業(yè)設計（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構的變化規(guī)律，應用于汽車的輕量化研究和安全性研究當中。2.畢業(yè)設計（論文）任務的內容和要求：根據(jù)蜂窩結構的特點，展開蜂窩結構的抗彎性能的研究，找出具有良好抗彎性能的最佳的蜂窩結構：選取密度或厚度成梯度變化蜂窩結構，研究出抗彎性能最佳的梯

2、度蜂窩結構。在梁進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構，把其應用到汽車等上面。3.主要參考文獻：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)化設計. 江蘇理工大學學報，2001，22(3): 29-323 McNay I I, Gene H. Numerical modeling of tube cras

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4、nder J M. An approximate analysis of the collapse of thin cylindrical shellsunder axial load. Quarterly Journal of Mechanics and Applied Mathematics,1969, 13: 10-157 Al-Hassani S T S, Johnson W, Lowe W T. Characteristics of inversion tubes under axial loading. Journal of Mechanical Engineering Scien

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