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首页> 外文期刊>Fibres & textiles in Eastern Europe >Numerical and Experimental Analysis for Shape Improvement of a Cruciform Composite Laminates Specimen
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Numerical and Experimental Analysis for Shape Improvement of a Cruciform Composite Laminates Specimen

机译：十字形复合材料层合板形状改进的数值和实验分析

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摘要

The use of composite materials has spread to different applications among which, those using thin sheet plates subjected to biaxial loads are commonly used in the car and aerospace industries. Hence, there is need of a reliable specimen to test these materials under biaxial loads. This reliability depends on measurements that are accurate and repeatable. Thus these measurements depend on the proper design of specimens. This paper reviews the development of cruciform specimens of carbon fibre composite materials and how the geometric shape has evolved. Based on this review, a new geometric shape is proposed. This improvement is based on numerical analysis of the specimen and tests results of experimental measurements carried out using a four piston rig in an orthogonal arrangement. Deformation is measured in the centre of the specimen using strain gauges. By obtaining the principal stresses, it was found that maximum stresses occur in the centre of the specimen.
机译：复合材料的使用已扩展到不同的应用，其中，使用承受双轴载荷的薄板的复合材料通常用于汽车和航空航天工业。因此，需要一种可靠的样品来在双轴载荷下测试这些材料。这种可靠性取决于测量的准确性和可重复性。因此，这些测量取决于样品的正确设计。本文回顾了碳纤维复合材料的十字形标本的发展以及几何形状如何演变。在此基础上，提出了一种新的几何形状。这种改进是基于对样品的数值分析以及使用正交布置的四活塞钻机进行的实验测量结果的测试结果。使用应变仪在样品中心测量变形。通过获得主应力，发现最大应力出现在试样的中心。

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