{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,24]],"date-time":"2026-09-24T02:26:52Z","timestamp":1790216812865,"version":"4.1.0"},"reference-count":23,"publisher":"MDPI AG","issue":"11","license":[{"start":{"date-parts":[[2024,6,4]],"date-time":"2024-06-04T00:00:00Z","timestamp":1717459200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Shanghai Institute of Special Equipment Inspection and Technical Research","award":["2022-07Y"],"award-info":[{"award-number":["2022-07Y"]}]},{"name":"Development of a Progressive Damage Model and Study of Failure Mechanism for Buried Polyethylene Gas pipelines under Aging-Subside Effects","award":["2022-07Y"],"award-info":[{"award-number":["2022-07Y"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Materials"],"abstract":"<jats:p>This paper attempts to analyze the random fatigue life and failure modes of joints using two calculation methods. Three kinds of tests were carried out, which were the static test, constant amplitude fatigue test and the random fatigue test, and four kinds of joints were designed. After the static test, the joint was subjected to a constant amplitude fatigue test by selecting different percentages of load according to the static strength. In order to predict the random fatigue life more precisely, two calculation methods were carried out, which were the linear cumulative damage method and the equivalent loading finite element method. Based on the linear cumulative damage hypothesis, the fatigue life of the joint was established as a function of the load amplitude, and then, the random life prediction was calculated by the amplitude distribution of the random loading. Another method was the equivalent loading method, which was to obtain the equivalent constant amplitude fatigue loading of the random loading spectrum. The finite element model was established based on the stiffness and strength degradation rule. The equivalent random life and fatigue failure modes of the joint were modeled. The two life prediction methods show good agreement with the fatigue experimental result, and all prediction results were included in a scatter band of the factor of 2.<\/jats:p>","DOI":"10.3390\/ma17112740","type":"journal-article","created":{"date-parts":[[2024,6,4]],"date-time":"2024-06-04T11:48:50Z","timestamp":1717501730000},"page":"2740","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":7,"title":["Fatigue Analysis of Composite Bolted Joints under Random and Constant Amplitude Fatigue Loadings"],"prefix":"10.3390","volume":"17","author":[{"given":"Song","family":"Zhou","sequence":"first","affiliation":[{"name":"College of Civil Aviation, Northwest Polytechnical University, Taicang 215400, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Bo","family":"Yang","sequence":"additional","affiliation":[{"name":"Shanghai Institute of Special Equipment Inspection and Technical Research, Shanghai 200063, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yichang","family":"Huang","sequence":"additional","affiliation":[{"name":"Shanghai Institute of Special Equipment Inspection and Technical Research, Shanghai 200063, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xiaodi","family":"Wu","sequence":"additional","affiliation":[{"name":"School of Marine Engineering and Technology, Sun Yat-sen University, Zhuhai 519082, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2024,6,4]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"106860","DOI":"10.1016\/j.engfailanal.2022.106860","article-title":"Quasi-static strength and fatigue life of aerospace hole-to-hole bolted joints","volume":"143","author":"Pichon","year":"2023","journal-title":"Eng. 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