| 合拢弯矩作用下复合材料曲梁突变屈曲的研究 |
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| 引用本文： | 王玮波,R.A.SHENOI,崔维成.合拢弯矩作用下复合材料曲梁突变屈曲的研究[J].船舶力学,2006,10(6):102-114. |
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| 作者姓名： | 王玮波 R.A.SHENOI 崔维成 |
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| 作者单位： | School of Engineering Sciences,University of Southampton,SO17 1BJ,UK;中国船舶科学研究中心,江苏,无锡,214082;School of Engineering Sciences,University of Southampton,SO17 1BJ,UK;中国船舶科学研究中心,江苏,无锡,214082 |
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| 摘 要： | 研究了复合材料曲梁在受到合拢弯矩作用下发生的屈曲情况,并给出一种理论解析方法来分析这种很可能发生在复合材料弯曲结构中的脱层耦合屈曲问题.该方法是基于曲梁大变形理论及断裂力学而提出来的.文中并用该解析方法分析了一个特定的常见的情况,在该题例中脱层发生在非常靠近内表面处并且突变屈曲就发生在该薄脱层.在文中也对脱层裂纹的弧角对极限载荷的影响进行了研究.
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| 关 键 词： | 复合材料 曲梁 脱层损伤 断裂 突变屈曲 应变能 |
| 文章编号： | 1007-7294(2006)06-0102-13 |
| 收稿时间： | 2006-09-15 |
| 修稿时间： | 2006年9月15日 |
Delamination Buckling of a Curved Composite Beam Subjected to a Closing Bending Moment |
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| WANG Wei-bo,R.A.SHENOI,CUI Wei-cheng.Delamination Buckling of a Curved Composite Beam Subjected to a Closing Bending Moment[J].Journal of Ship Mechanics,2006,10(6):102-114. |
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| Authors: | WANG Wei-bo RASHENOI CUI Wei-cheng |
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| Institution: | 1 School of Engineering Sciences, University of Southampton, SO17 1BJ, UK; 2 China Ship Scientific Research Center, Wuxi 214082, China |
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| Abstract: | The snap buckling case in a curved composite beam under a closing bending moment is dealt with.A theoretical approach is developed for the non-linear problem of delamination buckling which is likely to occur in curved composite structures.The approach is based on large deflection characterisation of a curved beam,coupled with fracture mechanics concepts.The general solution is applied to analyse a special case in which delamination occurs very close to inner surface of the beam and snap buckling happens in this delaminated thin layer.The effect of the arc angle of delamination crack on the critical load is also studied. |
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| Keywords: | composites curved beam delamination fracture snap buckling strain energy |
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