PSI - Issue 77

Koji Uenishi et al. / Procedia Structural Integrity 77 (2026) 183–189 Uenishi / Structural Integrity Procedia 00 (2026) 000–000

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dimensional context. It has been indicated that if the interface is asymmetrically curved, the wave field also becomes asymmetric with respect to the interface and regardless of the Mach numbers, the induced waves can be strongly confined on the convex side of the interface. This confining effect of the curved interface may have considerable influence on the seismic vibration experienced at places near the interface. Also, some possible frequency characteristics of the induced waves have been simply analyzed based on the structural behavior captured in recorded videos during a real earthquake. If the number of videos showing dynamic movements on the ground surface, etc., caused by near-field earthquakes increases, the real wave confining effect of curved interfaces as well as the presence of shorter seismic waves may become more evident. Acknowledgements The research has been financially supported by the Japan Society for the Promotion of Science (JSPS) through the “KAKENHI: Grant-in-Aid for Scientific Research (C)” Program under grant number 23K04021. References Anderson, J. D., Cadou, C. P., 2023. Fundamentals of Aerodynamics Seventh Edition. McGraw-Hill, New York, pp. 1170. Cole, J., Huth, J., 1958. Stresses Produced in a Half Plane by Moving Loads. Journal of Applied Mechanics 25, 433–436. Eringen, A. C., Samuels, J. C., 1959. Impact and Moving Loads on a Slightly Curved Elastic Half Space. Journal of Applied Mechanics 26, 491– 498. Fung, Y. C., 1965. Foundations of Solid Mechanics. Prentice-Hall, Englewood Cliffs, pp. 525. Georgiadis, H. G., Barber, J. R., 1993. Steady-State Transonic Motion of a Line Load over an Elastic Half-Space: The Corrected Cole/Huth Solution. Journal of Applied Mechanics 60, 772–774. Japan Meteorological Agency, Seismic Intensity Database of Japan, https://www.data.jma.go.jp/svd/eqdb/data/shindo/, 2025. Jin, F., Wang, Z., Kishimoto, K., 2005. Basic Properties of Rayleigh Surface Wave Propagation along Curved Surfaces. International Journal of Engineering Science 43, 250–261. Kawata, Y., 1996. Seaquakes Felt on Board a Ship, Seismic Waves Seen in a Tunnel. Kagaku (Science) 66, 70–71 (in Japanese). National Institute of Advanced Industrial Science and Technology, Active Fault Database of Japan, https://gbank.gsj.jp/activefault/, 2025. Rossmanith, H. P., Uenishi, K., Kouzniak, N., 1997. Blast Wave Propagation in Rock Mass – Part I: Monolithic Medium. Fragblast 1, 317–359. Uenishi, K., 2024. Towards Detecting the Strong Vertical Shock Induced by a Shallow Earthquake. Procedia Structural Integrity 54, 67–74. Uenishi, K., 2025. On Elastic Waves Generated by Energy Sources Moving along Curved Surfaces. Results in Physics 76C, Article 108370 (11 pages). Uenishi, K., Rossmanith, H. P., Scheidegger, A. E., 1999. Rayleigh Pulse – Dynamic Triggering of Fault Slip. Bulletin of the Seismological Society of America 89, 1296–1312. Uenishi, K., Sakurai, S., 2000. Characteristic of the Vertical Seismic Waves Associated with the 1995 Hyogo-ken Nanbu (Kobe), Japan Earthquake Estimated from the Failure of the Daikai Underground Station. Earthquake Engineering and Structural Dynamics 29, 813–821. Zhang, S., Qin, L., Li, X., Kube, C. M., 2020. Propagation of Rayleigh Waves on Curved Surfaces. Wave Motion 94, Article 102517 (13 pages).