Micro-leveled modeling of structural stitched FRP joints as energy absorbing rupture points
Micro-leveled modeling of structural stitched FRP joints as energy absorbing rupture points
复制标题
作为能量吸收破裂点的结构缝合 FRP 接头的微观建模
DOI：
10.1016/j.compstruct.2016.08.026
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发表时间：
2016
影响因子：
6.3
通讯作者：
Schmeer
中科院分区：
文献类型：
--
作者：
Hannemann;Schmeer
与压缩载荷相比，连续纤维增强聚合物在拉伸或弯曲载荷下的能量吸收能力较差。适当的结构设计必须弥补这一缺点。遵循集成的轻量级策略，连接元素可以作为能量吸收点。因此，织物接缝之间的玻璃钢组件可以使用。调整拼接布局可以调整失效过程。然而，为了优化能量吸收，必须确定适当的设计原则。为此，建立了基于实际缝线几何形状的单缝线参数化有限元模型，并用实验数据进行了验证。经过验证的数值分析有助于评估螺纹性能和钉头设计的影响。参数研究表明，螺纹材料的影响很大。在负载缝中，具有独特塑性的聚酰胺纱比高强度超高分子量聚乙烯（Dyneema）纱具有更好的吸能能力。此外，纱线与周围材料之间的摩擦以及较宽的针长有利于能量吸收。
Compared to their capability for compression loads, continuous fiber reinforced polymers show poor energy absorption capability for tensile or bending loads. An appropriate structural design must compensate this disadvantage. Following an integrated lightweight strategy, connecting elements can be addressed as energy absorbing points. Consequently, textile seams between FRP components can be used. Adapting the stitching layout allows the failure process to be adjusted. However, appropriate design principles have to be identified in order to optimize the energy absorption. For this purpose, a parametrized finite element model of a single lockstitch was developed based on real stitching geometries and validated with experimental data. The validated numerical analysis helps in evaluating the influence of the thread properties and the stitching design. The parameter study reveals a strong influence of the thread material. In a loaded seam, polyamide yarns with a distinctive plasticity offer much better energy absorption capacity than high tenacity UHMWPE (Dyneema) threads. Furthermore, friction between the yarn and the surrounding material as well as wide stitch lengths are beneficial for energy absorption.
DOI：
--
发表时间：
2008
期刊：
影响因子：
--
作者：
Matthew J. Hagon
通讯作者：
Matthew J. Hagon
轴承模式吸收器——论拉动螺栓穿过复合板或夹层板的能量吸收能力☆
DOI：
--
发表时间：
2014
期刊：
影响因子：
--
作者：
S. Heimbs;T. Bergmann
通讯作者：
T. Bergmann
UHMWPE 纱线的动态行为和解决样品夹具的阻抗失配效应
DOI：
--
发表时间：
2010
期刊：
影响因子：
--
作者：
A.C.P. Koh;V. Shim;V. Tan
通讯作者：
V. Tan