ABSTRACT

The present study aims at identifying and analyzing challenges and prospects related to the use of pseudoelastic shape memory alloys for well-established double shear connections in timber engineering. The unique behavior of shape memory alloys will allow to bear large reversible deformations without loss of cohesion. Thereby, the main objective of the present work is to study the behavior of a connection that is able to stay completely reversible even upon very large deformations. In this context, the stiffness of the connection as well as functional and structural integrity and damping behavior have been improved by stepwise adaption of the detailing. Proof of concept is provided, and current limitations are discussed, based on the application of bolts made from a commercially available shape memory alloy.

摘要

本研究旨在识别和分析与使用伪弹性形状记忆合金在木材工程中建立良好的双剪切连接相关的挑战和前景。形状记忆合金的独特行为将允许承受大的可逆变形而不会失去内聚力。因此，本工作的主要目标是研究即使在非常大的变形下也能够保持完全可逆的连接行为。在这种情况下，连接的刚度以及功能和结构的完整性以及阻尼性能都通过逐步调整细节得到了改善。基于由市售形状记忆合金制成的螺栓的应用，提供了概念证明，并讨论了当前的局限性。