Abstract It is significant to theoretically evaluate the mechanical properties of hybrid (bonded/bolted) GLARE joint, especially under the condition of multiple assembly uncertainties. This work develops a double-spring analytical model that predicts the deformation of hybrid joints under the quasi-static load to solve this critical problem in the fabrication process of hybrid joints. Besides the mechanical properties of bolt, the stiffness of adhesive layers is introduced in this novel model in which the factors such as geometrics, properties of adhesive layer, bolt-hole clearance, laminate properties, contact condition, relaxation of pre-torque and types of materials are discussed in detail. Meanwhile, a Monte Carlo simulation (MCS) and a variance-based method are used to calculate their global sensitivity indices that have the ability to quantify the relative importance of those assembly factors in load distribution between the bolt and adhesive layer, fracture displacement at the initial stage and other mechanical properties. It is found that bolt-hole clearance, geometrics of laminate and properties of adhesive layer are the top three sensitive factors, the qualities of which must be strictly controlled in the process of fabrication. This model is able to provide a powerful approach for the future design of hybrid joints to achieve higher reliability and load capacity.

中文翻译：

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混合 GLARE 关节的新型双弹簧分析模型：模型开发、验证、参数研究和全局灵敏度分析

摘要 对混合（粘合/螺栓）GLARE 接头的力学性能进行理论评估具有重要意义，尤其是在多个装配不确定条件下。这项工作开发了一种双弹簧分析模型，可以预测准静态载荷下混合接头的变形，以解决混合接头制造过程中的这一关键问题。除了螺栓的力学性能外，该模型还引入了粘合剂层的刚度，其中包括几何形状、粘合剂层性能、螺栓孔间隙、层压板性能、接触条件、预扭矩松弛和类型等因素。材料进行了详细讨论。同时，使用蒙特卡罗模拟 (MCS) 和基于方差的方法计算其全局灵敏度指数，该指数能够量化这些装配因素在螺栓和粘合剂层之间的载荷分布、初始阶段的断裂位移中的相对重要性和其他机械性能。结果表明，螺栓孔间隙、层压板几何形状和胶层性能是前三大敏感因素，在制造过程中必须严格控制其质量。该模型能够为混合关节的未来设计提供一种强大的方法，以实现更高的可靠性和负载能力。初始阶段的断裂位移和其他力学性能。结果表明，螺栓孔间隙、层压板几何形状和胶层性能是前三大敏感因素，在制造过程中必须严格控制其质量。该模型能够为混合关节的未来设计提供一种强大的方法，以实现更高的可靠性和负载能力。初始阶段的断裂位移和其他力学性能。结果表明，螺栓孔间隙、层压板几何形状和胶层性能是前三大敏感因素，在制造过程中必须严格控制其质量。该模型能够为混合关节的未来设计提供一种强大的方法，以实现更高的可靠性和负载能力。