Experimental and numerical investigations on adhesively bonded timber joints
Experimental and numerical investigations on adhesively bonded timber joints
复制标题
胶接木材接缝的实验和数值研究
DOI：
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发表时间：
2011
影响因子：
3.4
通讯作者：
S. Hehl
中科院分区：
文献类型：
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作者：
T. Tannert;Till Vallée;S. Hehl
木材结构元件的粘接提供了新的机会，因为它很好地适应了材料的各向异性和纤维性。对由木材、云杉和胶粘层组成的全尺寸粘接双搭接节点进行了试验和数值研究。研究了不同几何参数和胶粘剂对接头强度的影响。研究的几何参数是胶粘层的厚度(0.5-2.0 mm)、重叠长度(40-280 mm)和胶粘剂的延展性(使用三种不同的胶粘剂)。结果发现，接头强度与胶层厚度无关(在所研究的厚度范围内)，接头强度随着重叠长度的增加而增加，最大可达约200 mm，而且强度几乎与胶粘剂的硬度无关。数值模拟结果与试验结果吻合较好，该模型可用于所研究节点的强度预测。
Adhesively bonding of timber structural elements provides new opportunities as it is well adapted for the anisotropic and fibrous nature of the material. Experimental and numerical investigations were carried out on adhesively bonded full-scale double-lap joints composed of timber adherends (spruce) and adhesive layers. The influence of different geometric parameters and adhesives on the joint strength was studied. The investigated geometric parameters were the thickness of the adhesive layer (0.5–2.0 mm), the overlap length (40–280 mm), and the ductility of the adhesive (using three different adhesives). It was found that the joint strength was independent of the adhesive layer thickness (for the thickness range investigated) that the joint strength increased with the overlap length up to an apparent maximum of approximately 200 mm and that strength was almost independent of the adhesive stiffness. The numerical investigation was in good agreement with the experimental results and allows for the model to be used for strength prediction of the investigated joints.