{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,19]],"date-time":"2026-01-19T08:04:46Z","timestamp":1768809886573,"version":"3.49.0"},"reference-count":31,"publisher":"MDPI AG","issue":"12","license":[{"start":{"date-parts":[[2021,6,9]],"date-time":"2021-06-09T00:00:00Z","timestamp":1623196800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100002261","name":"Russian Foundation for Basic Research","doi-asserted-by":"publisher","award":["No. 18-51-80008 BRICS"],"award-info":[{"award-number":["No. 18-51-80008 BRICS"]}],"id":[{"id":"10.13039\/501100002261","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100002261","name":"Russian Foundation for Basic Research","doi-asserted-by":"publisher","award":["No. 20-31-70053"],"award-info":[{"award-number":["No. 20-31-70053"]}],"id":[{"id":"10.13039\/501100002261","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["NSFC No. 11772335"],"award-info":[{"award-number":["NSFC No. 11772335"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Materials"],"abstract":"<jats:p>The influence of background ultrasonic field on the ultimate dynamic strength of adhesive joints is studied using fracture mechanics analysis. Winkler foundation-type models are applied to describe the cohesion zone, and the incubation time fracture criterion is used. The challenging task is to study whether relatively weak ultrasound is able to decrease the threshold values of the external impact load depending on a joint model, such as an \u201celastic membrane\u201d or \u201cbeam\u201d approximation, and various boundary conditions at the ends. The specific task was to investigate the case of short pulse loading through application of time-dependent fracture criterion instead of the conventional principle of critical stress. Three different load cases, namely, step constant force, dynamic pulse, and their combination with ultrasonic vibrations, were also studied. The analytical solution to the problem demonstrates that background vibrations at certain frequencies can significantly decrease threshold values of fracture impact load. Specific calculations indicate that even a weak background sonic field is enough to cause a significant reduction in the threshold amplitude of a dynamic short pulse load. Additionally, non-monotonic dependency of threshold amplitude on pulse duration for weak background field was observed, which demonstrates the existence of optimal regimes of impact energy input. Moreover, this phenomenon does not depend on the way in which the beam edges mount, whether they are clamped or hinged, and it could be applied for micro-electro-mechanical switch design processes as an additional tool to control operational regimes.<\/jats:p>","DOI":"10.3390\/ma14123188","type":"journal-article","created":{"date-parts":[[2021,6,9]],"date-time":"2021-06-09T14:16:04Z","timestamp":1623248164000},"page":"3188","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":7,"title":["The Influence of Background Ultrasonic Field on the Strength of Adhesive Zones under Dynamic Impact Loads"],"prefix":"10.3390","volume":"14","author":[{"given":"Grigory","family":"Volkov","sequence":"first","affiliation":[{"name":"Mathematical and Mechanical Faculty, Saint Petersburg University, Universitetskiy Prospect 28, 198504 Saint Petersburg, Russia"},{"name":"Institute of Problems in Mechanical Engineering of the Russian Academy of Sciences, V.O. Bolshoy pr-t 61, 199178 Saint Petersburg, Russia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Andrey","family":"Logachev","sequence":"additional","affiliation":[{"name":"Mathematical and Mechanical Faculty, Saint Petersburg University, Universitetskiy Prospect 28, 198504 Saint Petersburg, Russia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Nikolai","family":"Granichin","sequence":"additional","affiliation":[{"name":"Mathematical and Mechanical Faculty, Saint Petersburg University, Universitetskiy Prospect 28, 198504 Saint Petersburg, Russia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ya-Pu","family":"Zhao","sequence":"additional","affiliation":[{"name":"School of Engineering Science, University of Chinese Academy of Sciences, 19A Yuquanlu, Beijing 100049, China"},{"name":"State Key Laboratory of Nonlinear Mechanics (LNM), Institute of Mechanics, Chinese Academy of Sciences, Beisihuangxilu 15, Beijing 100190, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yin","family":"Zhang","sequence":"additional","affiliation":[{"name":"School of Engineering Science, University of Chinese Academy of Sciences, 19A Yuquanlu, Beijing 100049, China"},{"name":"State Key Laboratory of Nonlinear Mechanics (LNM), Institute of Mechanics, Chinese Academy of Sciences, Beisihuangxilu 15, Beijing 100190, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yuri","family":"Petrov","sequence":"additional","affiliation":[{"name":"Mathematical and Mechanical Faculty, Saint Petersburg University, Universitetskiy Prospect 28, 198504 Saint Petersburg, Russia"},{"name":"Institute of Problems in Mechanical Engineering of the Russian Academy of Sciences, V.O. Bolshoy pr-t 61, 199178 Saint Petersburg, Russia"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2021,6,9]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Eisenhaure, J., and Kim, S. (2017). A review of the state of dry adhesives: Biomimetic structures and the alternative designs they inspire. Micromachines, 8.","DOI":"10.3390\/mi8040125"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1007\/s40735-018-0160-1","article-title":"Natural Adhesion System Leads to Synthetic Adhesives","volume":"4","author":"Kasar","year":"2018","journal-title":"J. Bio- Tribo-Corros."},{"key":"ref_3","doi-asserted-by":"crossref","unstructured":"Li, X., Tao, D., Lu, H., Bai, P., Liu, Z., Ma, L., Meng, Y., and Tian, Y. (2019). Recent developments in gecko-inspired dry adhesive surfaces from fabrication to application. Surf. Topogr. Metrol. 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