What is it about?
During the ballast impact on train carbody, the relative velocity between the ballast stone and the train reaches in the range of [33.33, 61.11] (unit: m/s). The impact velocity is significantly higher than that assigned during low-velocity impact test. This dissimilarity is crucial and it significantly affects the damage behaviors in both the ballast impact and CABI tests compared to low-velocity impact tests. However, recent studies on high-speed impact provided the final damaged specimens, and the post-treatment of these samples with only limited information. Therefore, numerical investigation has been performed in this study to better understand the fundamental damage mechanism of high-speed ballast impact for CFRP laminates. It can provide vital insights for the impact-resistance assessment during the design stage of high-speed train carbodies.
Photo by Daniel Abadia on Unsplash
Read the Original
This page is a summary of: On the damage mechanism of high-speed ballast impact and compression after impact for CFRP laminates, Composite Structures, December 2019, Elsevier, DOI: 10.1016/j.compstruct.2019.111435.
You can read the full text:
The following have contributed to this page