弹性体层合结构在反复摩擦作用下层间疲劳破坏的实验与机理研究

The objectives of this research project focus on the understanding of the mechanism of interlaminar fatigue fracture of elastomer laminates under repeated surface friction and the improving of interlaminar fatigue resistance. Considering the complicate mechanical properties of elastomer and repeated surface friction, the experimental methodology will be studied, as well as the mechanism analysis will be conducted. A friction fatigue test equipment, which can conduct various friction loading patterns and capture the in–situ information will be constructed. The systematic tests will be performed for various elastomer laminates under different friction fatigue load conditions to obtained the representative interlaminar fatigue fracture modes and their evolution progress. With the implement of the suitable elastomer constitutive model into the numerical simulation model, the influence of elastomer material properties and friction loading conditions on the mechanism of interlaminar fatigue fracture of elastomer laminates under repeated surface friction can be studied. The meaningful guidance can be obtained to improve the interlaminar fatigue resistance. It is reasonable to predicted that the innovative achievements, such as understanding of interlaminar fatigue fracture mechanisms and the improvement of elastomer laminates performance, can harvested from the proposed research effort.

本课题以系统研究弹性体层合结构在反复摩擦作用下的层间疲劳破坏机理和提高其疲劳性能为目标，针对弹性体材料力学性能，考虑反复摩擦这一特殊疲劳加载形式，采用实验和理论分析结合的思路，开展弹性体层合结构层间疲劳破坏的实验与机理研究。搭建加载方式灵活可控的反复摩擦实验仪器，系统开展摩擦导致弹性体层合结构层间疲劳破坏实验研究，总结代表性疲劳破坏规律和特征。引入真实合理的弹性体本构关系，研究弹性体材料特征对层合结构层间破坏行为的影响，建立反复摩擦致弹性体层合结构层间疲劳破坏的分析模型，系统揭示摩擦加载参数对层间疲劳破坏机理及演化的影响，准确评价弹性体层合结构层间疲劳性能，为改善弹性体层合结构层间疲劳性能提供切实的理论依据和工程指导意见。预计本项目将在弹性体层合结构层间疲劳破坏机理与性能改善等方面取得突破。

本课题以系统研究弹性体层合结构在反复摩擦作用下的层间疲劳破坏机理和提高其疲劳性能为目标，针对弹性体材料力学性能，考虑反复摩擦这一特殊疲劳加载形式，采用实验和理论分析结合的思路，开展弹性体层合结构层间疲劳破坏的实验与机理研究。搭建加载方式灵活可控的实验仪器，系统开展摩擦导致弹性体层合结构层间疲劳破坏实验研究，总结代表性疲劳破坏规律和特征。引入了真实合理的弹性体本构关系，研究高弹体材料特征对层合结构层间破坏行为的影响，建立了弹性体层合结构层间破坏的分析模型。本项目在弹性体层合结构层间疲劳破坏机理与性能改善等方面取得了突破，系统揭示了加载参数和材料性能对层间破坏机理及演化的影响，准确评价弹性体层合结构层间性能，为改善弹性体层合结构层间性能提供切实的理论依据和工程指导意见。