本文選題：變角度 + 層合板��； 參考：《復(fù)合材料學(xué)報》2017年08期

【摘要】：基于二次Bezier曲線法,開展纖維變角度層合板的屈曲特性研究。首先,對原始的二次Bezier曲線進(jìn)行了擴(kuò)展,提出了分段式二次Bezier曲線變化方法,重新定義了纖維變角度鋪放參考路徑,確定了變角度層合板的表示形式。其次,以[0±20(β)65]_(2s)和[90±20(β)65]_(2s)為例對變角度層合板的屈曲特性進(jìn)行了有限元分析,并與定角度層合板對比。最后,研究了不同終止角α和連接點(diǎn)參數(shù)β對層合板屈曲性能的影響,結(jié)果表明:連接點(diǎn)參數(shù)β的增大使得兩種變剛度層合板的線性屈曲載荷先增大后減小,終止角大于起始角時,層合板的一階屈曲載荷逐漸增大,鋪放角度的增大有利于層合板屈曲載荷的提高。
[Abstract]:Based on the quadratic Bezier curve method, the buckling characteristics of fiber laminated plates with variable angles were studied. Firstly, the original quadratic Bezier curve is extended, a segmented quadratic Bezier curve variation method is proposed, the reference path of fiber variable angle placement is redefined, and the representation of the variable angle laminated plate is determined. Secondly, the finite element analysis of the buckling characteristics of the laminated plates with varying angles is carried out with the examples of [0 鹵20 (尾 ~ (65) s) and [90 鹵20 (尾 ~ (65) / s), and the results are compared with those of a fixed angle laminated plate. Finally, the effects of different termination angles 偽 and connection point parameters 尾 on the buckling properties of laminated plates are studied. The results show that the linear buckling load of two kinds of laminated plates with variable stiffness increases first and then decreases with the increase of the connecting point parameters 尾. When the termination angle is larger than the initial angle, the first order buckling load of the laminated plate increases gradually, and the increase of the placement angle is beneficial to the increase of the buckling load of the laminated plate.
【作者單位】： 哈爾濱工業(yè)大學(xué)機(jī)電工程學(xué)院;
【基金】：國家自然科學(xué)基金(51005060) 國家數(shù)控專項(xiàng)支持項(xiàng)目(2014ZX04001091)
【分類號】：TB33
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本文編號：1819280