Finger joints with standard geometries and adhesives used for joining coniferous wood are not sufficient in terms of strength when gluing beech wood. A numerical model of finger joined beech lamellas was prepared and simulations of tension tests were made. Parametric studies with multiple variables referring to geometrical properties of finger joints and two different types of applied adhesives were performed. The results showed a high influence of the finger joint geometrical parameters. Experimental tests on the tension strength of the finger joints were performed. To validate the numerical model, 20 mm long finger joints were produced and tested. Two types of adhesives were used, MUF and PRF. The finger joints were pressed under two different pressures. Prior to tension testing, the dynamic modulus of elasticity was measured with a strength grading machine and strength grade assignments were made. The influence of joining of the boards on the dynamic modulus of elasticity was analysed. The results of the tension tests of the finger joints showed a clear influence of the finger joint geometry, where highest strengths were obtained with longer and thinner fingers, while the influence of the adhesive seems to decrease with the length of finger joints.

在胶合山毛榉木时，具有标准几何形状的指接和用于连接针叶木的粘合剂不足以达到强度。建立了指接山毛榉薄片的数值模型，并进行了拉伸试验的模拟。进行了具有多个变量的参数研究，这些变量涉及指关节的几何特性和两种不同类型的应用粘合剂。结果表明，手指关节的几何参数影响很大。对手指关节的抗张强度进行了实验测试。为了验证数值模型，制作并测试了20毫米长的手指关节。使用了两种类型的粘合剂，MUF和PRF。在两个不同的压力下按压手指关节。在进行张力测试之前，用强度分级机测量动态弹性模量，并进行强度等级分配。分析了板的连接对动态弹性模量的影响。手指关节的张力测试结果显示出明显的手指关节几何形状影响，其中更长和更细的手指可获得最高强度，而粘合剂的影响似乎随着手指关节长度的增加而减小。