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首页> 外文期刊>Composite Structures >Free end effect on the stress and displacement distributions in a cracked composite strip
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Free end effect on the stress and displacement distributions in a cracked composite strip

机译：自由端对裂纹复合材料条中应力和位移分布的影响

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摘要

Taking into account the marked anisotropic character of carbon fibre composite materials. A small parameter related to material properties is introduced. The stress field in a semi-infinite strip with a semi-infinite crack whose tip is close to the strip free end is investigated through a singular perturbation method. For slow crack propagation, the quasi-static character of the stress field is established. An accurate asymptotic solution is derived, which allows the interaction between the strip free end and the stress field around the crack tip to be studied. For the carbon-epoxy material investigated, this interaction becomes negligible when the dis- tance between the crack tip and the strip free end is greater than 1.5h, where h is the strip half-height.
机译：考虑到碳纤维复合材料的显着各向异性。介绍了一个与材料特性有关的小参数。通过奇异摄动法研究了具有无限裂纹的半无限裂纹带的尖端的应力场。对于缓慢的裂纹扩展，建立了应力场的准静态特性。得出了一个精确的渐近解，该解允许研究带材自由端与裂纹尖端周围的应力场之间的相互作用。对于所研究的碳环氧材料，当裂纹尖端与带材自由端之间的距离大于1.5h时，这种相互作用可忽略不计，其中h是带材的半高。

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