Understanding material behavior under dynamic loading represents both a critical industrial challenge and a scientific foundation for modern manufacturing innovation. Research in this domain constitutes a frontier in materials science, applied physics, and high-pressure physics due to its broad practical implications.

Traditional material characterization, following a "composition design → static properties → structural analysis" paradigm, overlooks a vital consideration: material performance under real-world dynamic loading conditions. Extensive studies confirm that loading conditions dramatically alter material responses, for example: Dynamic loading modifies phase transition pressures; Stress-rate dependence governs strength properties. These factors directly impact material selection and application boundary design.

Recent advances in loading technologies and computational modeling have accelerated global research on multiscale material behavior under dynamic loading. Chinese research in this field now parallels international progress, employing two complementary approaches: Loading methods including static, quasi-static, and dynamic loading; Methodologies exhibits experimental, theoretical, and simulation techniques, and gradually forms an paradigm of integrated experiment-characterization-theory frameworks.

To spotlight advancements in this field, Chinese Journal of High Pressure Physics presents 11 representative studies from the China Academy of Engineering Physics (CAEP). These contributions showcase multiscale investigations of material structures and properties under dynamic loading. Given the breadth of this research field, the scope of this Special Topic is intentionally focused on representative directions within the authors' expertise. We acknowledge that this approach cannot provide an exhaustive overview and sincerely appreciate readers' understanding.

We extend special gratitude to all contributors and reviewers for their essential roles in this Special Topic.

Zhipeng GAO   Jun LI

National Key Laboratory of Shock Wave and Detonation Physics

Institute of Fluid Physics, China Academy of Engineering Physics

April 2, 2024