High-cycle fatigue of tri- and tetra-anti-chiral auxetic structures: Experimental and numerical investigation
Source abstract
Abstract
The investigation of the fatigue behaviour of two chiral auxetic cellular structures made of aluminium alloy 5083-H111 is presented in this study. Experimental and numerical tests were conducted under force control at different stress amplitudes in the high-cycle fatigue (HCF) regime. Based on the results, S-N curves were constructed, and the fatigue life of two auxetic geometries was determined. The numerical study was done using an elasto-plastic material model and stress-life approach to assess their fatigue life. The results showed that the tri-anti-chiral structure had a higher fatigue resistance compared to the tetra-anti-chiral structure. A good correlation was achieved between the numerical and experimental results, both in fatigue life predictions and in crack initiation regions. Additionally, a parametric study was conducted to assess the impact of modifying the node-strut junction radius on fatigue life.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Cellular and Composite Structures · Automotive and Human Injury Biomechanics · Shape Memory Alloy Transformations
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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