{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,5]],"date-time":"2026-02-05T22:06:22Z","timestamp":1770329182738,"version":"3.49.0"},"reference-count":43,"publisher":"MDPI AG","issue":"8","license":[{"start":{"date-parts":[[2021,4,10]],"date-time":"2021-04-10T00:00:00Z","timestamp":1618012800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Materials"],"abstract":"<jats:p>Herein, the stress-state dependence of fracture entropy for a polyamide 6 material is investigated through molecular dynamics simulations. Although previous research suggests that a constant entropy increase can be universally applied for the definition of material fracture, the dependence of stress triaxiality has not yet been discussed. In this study, entropy values are evaluated by molecular dynamics simulations with varied combined stress states. The calculation is implemented using the 570,000 all-atom model. Similar entropy values are obtained independently of stress triaxiality. This study also reveals the relationship between material damage, which is correlated with void size, and the entropy value.<\/jats:p>","DOI":"10.3390\/ma14081884","type":"journal-article","created":{"date-parts":[[2021,4,12]],"date-time":"2021-04-12T03:04:06Z","timestamp":1618196646000},"page":"1884","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":22,"title":["Molecular Dynamics Simulation for Evaluating Fracture Entropy of a Polymer Material under Various Combined Stress States"],"prefix":"10.3390","volume":"14","author":[{"given":"Naohiro","family":"Takase","sequence":"first","affiliation":[{"name":"Department of Materials Science and Technology, Graduate School of Tokyo University of Science, 6-3-1 Niijuku, Katsushika-ku, Tokyo 125-8585, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6754-2822","authenticated-orcid":false,"given":"Jun","family":"Koyanagi","sequence":"additional","affiliation":[{"name":"Department of Materials Science and Technology, University of Science, 6-3-1 Niijuku, Katsushika-ku, Tokyo 125-8585, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kazuki","family":"Mori","sequence":"additional","affiliation":[{"name":"Itochu Techno-Solutions Corporation, Art Village Osaki Central Tower, 1-2-2, Osaki, Shinagawa-ku, Tokyo 141-8522, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0436-2821","authenticated-orcid":false,"given":"Takenobu","family":"Sakai","sequence":"additional","affiliation":[{"name":"Department of Mechanical Engineering, Saitama University, Shimo-Okubo, Sakura-ku, Saitama 338-8570, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2021,4,10]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"359","DOI":"10.1007\/s40684-016-0045-z","article-title":"Comparative study on mechanical properties of CR340\/CFRP composites through three point bending test by using theoretical and experimental methods","volume":"3","author":"Lee","year":"2016","journal-title":"Int. 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