This paper presents a comprehensive experimental and numerical investigation to design novel engineered wood products (EWPs), namely adhesive-free laminated beams (AFLB) and adhesive-free cross-laminated timber (AFCLT) panels, for the first time. Thermo-mechanically compressed wood (CW) dowels were used as a joint element as an alternative to the traditional glue and metallic fasteners. The following structural elements were studied: (1) solid timber beams, (2) middle-scale and large-scale three-layer AFLB, (3) timber-to-timber connections and (4) AFCLT panels. In addition, a predictive coupled nonlinear-damage model was proposed as a predictive and powerful tool design to reduce expensive experimental tests. The main mechanical characteristics and performance of the designed EWPs are assessed experimentally and addressed in the paper. Furthermore, the accuracy and the performance of the developed FE model were verified against experimental results from the studied example showing a fairly good prediction of the non-linear behavior as well as the modes of failure and its growth. Finally, the validated FE model was used to carry out a parametric study of the influential design parameters and some design recommendations are made.

本文首次进行了全面的实验和数值研究，以设计新型工程木产品（EWP），即无胶层压木（AFLB）和无胶交叉层压木（AFCLT）面板。使用热机械压缩木（CW）销钉作为连接元件，以替代传统的胶水和金属紧固件。研究了以下结构元素：（1）实木梁，（2）中型和大型三层AFLB，（3）木材与木材的连接以及（4）AFCLT面板。另外，提出了一种预测耦合非线性损伤模型，作为一种预测和强大的工具设计，可以减少昂贵的实验测试。设计的EWP的主要机械特性和性能通过实验评估，并在本文中进行了介绍。此外，根据所研究示例的实验结果验证了所开发有限元模型的准确性和性能，该结果显示了对非线性行为以及失效模式及其增长的良好预测。最后，使用经过验证的有限元模型对影响设计参数进行参数研究，并提出一些设计建议。