| 含内埋圆形或椭圆形脱层复合材料层合板的屈曲分析 |
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| 引用本文： | 李道奎, 周建平, 雷勇军. 含内埋圆形或椭圆形脱层复合材料层合板的屈曲分析[J]. 固体力学学报, 2003, 24(4): 410-418. doi: 10.3969/j.issn.0254-7805.2003.04.005 |
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| 作者姓名： | 李道奎 周建平 雷勇军 |
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| 作者单位： | 国防科技大学材料工程学院,长沙,410073;国防科技大学材料工程学院,长沙,410073;国防科技大学材料工程学院,长沙,410073 |
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| 基金项目： | 杰出青年科学基金 (1992 52 0 9),湖南省自然科学基金 (0 2JJY2 0 0 9)资助 |
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| 摘 要： | 用瑞里-李兹方法来建立含内埋圆形或椭圆形脱层板的屈曲分析模型.首先利用Heaviside阶梯函数,假定一种适合于脱层板的位移模式.然后由变分原理并进行线性化得出了含内埋圆形或椭圆形脱层板的屈曲特征方程.最后通过将含表面脱层的各向同性和各向异性板的屈曲载荷与其它文献进行比较,验证了该文分析方法的正确性,并分析了含内埋圆形或椭圆形脱层的各向同性、正交各向异性和角铺层层合板各种参数对屈曲载荷的影响.
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| 关 键 词： | 复合材料层合板 内埋脱层 屈曲载荷 屈曲模态 |
| 修稿时间： | 2002-04-12 |
BUCKLING ANALYSIS OF COMPOSITE LAMINATES WITH BUILT-IN CIRCULAR OR ELLIPTICAL DELAMINATIONS |
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| BUCKLING ANALYSIS OF COMPOSITE LAMINATES WITH BUILT-IN CIRCULAR OR ELLIPTICAL DELAMINATIONS[J]. Chinese Journal of Solid Mechanics, 2003, 24(4): 410-418. doi: 10.3969/j.issn.0254-7805.2003.04.005 |
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| Authors: | Li Daokui Zhou Jianping Lei Yongjun |
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| Abstract: | Buckling model for plates with built-in circular or elliptical delaminations is established by employing Rayleigh-Ritz method. Firstly, displacement mode is assumed for delaminated laminates by using Heaviside step function. Then, buckling characteristic equations for laminates with built-in circular or elliptical delaminations are derived by using the variational principle and linearized method. Finally, analytic method in this paper is validated by comparing the buckling load calculated with those in literature for isotropic and anisotropic plates with surface delamination. The influences of the parameters of isotropic, orthotropic and angle-plying laminates with built-in delaminations on buckling load are analyzed. |
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| Keywords: | composite laminates built-in delamination buckling load buckling mode |
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