Experimental Study of Constant-Amplitude Fatigue Performance of M39 High-Strength Bolts in Grid Structures with Bolt-Sphere Joints
Grid structures with bolt-sphere joints are widely used in industrial plants. With the installation of suspension cranes, high-strength bolts are subjected to repeated alternating loads and cause fatigue problems. Due to their dispersive nature, the degree of difficulty and cost of fatigue tests are...
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| Veröffentlicht in: | Mobile information systems 2022-09, Vol.2022, p.1-8 |
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| creator | Zhou, Zichun Lei, Honggang Yang, Xu Qiu, Bin |
| description | Grid structures with bolt-sphere joints are widely used in industrial plants. With the installation of suspension cranes, high-strength bolts are subjected to repeated alternating loads and cause fatigue problems. Due to their dispersive nature, the degree of difficulty and cost of fatigue tests are extremely high. Due to the lack of a recognized fatigue design method, engineering designers have encountered great difficulties, and the promotion and application of such methods are severely restricted. In this paper, we successfully implemented a constant-amplitude fatigue test of M39 high-strength bolt specimens on an American MTS Landmark 370.50 fatigue testing machine and obtained the corresponding S-N curve from the statistical analysis of the test data. Using the nominal stress amplitude Δσ and the hot point stress amplitude Δσk as the design parameters, we established a corresponding constant-amplitude fatigue design method. We performed a microscopic analysis of the fracture surface using a TESCAN Mira3 LMH scanning electron microscope and revealed the fatigue failure mechanism of the high-strength bolts. |
| doi_str_mv | 10.1155/2022/4155732 |
| format | Article |
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With the installation of suspension cranes, high-strength bolts are subjected to repeated alternating loads and cause fatigue problems. Due to their dispersive nature, the degree of difficulty and cost of fatigue tests are extremely high. Due to the lack of a recognized fatigue design method, engineering designers have encountered great difficulties, and the promotion and application of such methods are severely restricted. In this paper, we successfully implemented a constant-amplitude fatigue test of M39 high-strength bolt specimens on an American MTS Landmark 370.50 fatigue testing machine and obtained the corresponding S-N curve from the statistical analysis of the test data. Using the nominal stress amplitude Δσ and the hot point stress amplitude Δσk as the design parameters, we established a corresponding constant-amplitude fatigue design method. We performed a microscopic analysis of the fracture surface using a TESCAN Mira3 LMH scanning electron microscope and revealed the fatigue failure mechanism of the high-strength bolts.</description><identifier>ISSN: 1574-017X</identifier><identifier>EISSN: 1875-905X</identifier><identifier>DOI: 10.1155/2022/4155732</identifier><language>eng</language><publisher>Amsterdam: Hindawi</publisher><subject>Amplitudes ; Bolted joints ; Construction ; Cranes ; Cranes & hoists ; Design parameters ; Design specifications ; Failure mechanisms ; Fatigue failure ; Fatigue life ; Fatigue testing machines ; Fatigue tests ; Fracture surfaces ; High strength bolts ; Industrial plants ; Metal fatigue ; Research methodology ; S N diagrams ; Statistical analysis ; Tensile strength ; Yield stress</subject><ispartof>Mobile information systems, 2022-09, Vol.2022, p.1-8</ispartof><rights>Copyright © 2022 Zichun Zhou et al.</rights><rights>Copyright © 2022 Zichun Zhou et al. 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With the installation of suspension cranes, high-strength bolts are subjected to repeated alternating loads and cause fatigue problems. Due to their dispersive nature, the degree of difficulty and cost of fatigue tests are extremely high. Due to the lack of a recognized fatigue design method, engineering designers have encountered great difficulties, and the promotion and application of such methods are severely restricted. In this paper, we successfully implemented a constant-amplitude fatigue test of M39 high-strength bolt specimens on an American MTS Landmark 370.50 fatigue testing machine and obtained the corresponding S-N curve from the statistical analysis of the test data. Using the nominal stress amplitude Δσ and the hot point stress amplitude Δσk as the design parameters, we established a corresponding constant-amplitude fatigue design method. We performed a microscopic analysis of the fracture surface using a TESCAN Mira3 LMH scanning electron microscope and revealed the fatigue failure mechanism of the high-strength bolts.</description><subject>Amplitudes</subject><subject>Bolted joints</subject><subject>Construction</subject><subject>Cranes</subject><subject>Cranes & hoists</subject><subject>Design parameters</subject><subject>Design specifications</subject><subject>Failure mechanisms</subject><subject>Fatigue failure</subject><subject>Fatigue life</subject><subject>Fatigue testing machines</subject><subject>Fatigue tests</subject><subject>Fracture surfaces</subject><subject>High strength bolts</subject><subject>Industrial plants</subject><subject>Metal fatigue</subject><subject>Research methodology</subject><subject>S N diagrams</subject><subject>Statistical analysis</subject><subject>Tensile strength</subject><subject>Yield stress</subject><issn>1574-017X</issn><issn>1875-905X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2022</creationdate><recordtype>article</recordtype><sourceid>RHX</sourceid><recordid>eNp9kE1Lw0AQhoMoWKs3f8CCR43dnWSzybGWfiiKQhV6C9tk0mxpN3F3Q-3VX-6W9uxpXmYe3oEnCG4ZfWSM8wFQgEHsk4jgLOixVPAwo3xx7jMXcUiZWFwGV9auKU1oxEUv-B3_tGjUFrWTGzJ3XbknTUVGjbZOahcOt-1G-S2SiXRq1SH5QFM1Zit1gQfyLcrITK3qcO4M6pWryVOzcZYoTaZGlb7SdIXrDFqyU6drOG9rNEheGqWdvQ4uKrmxeHOa_eBrMv4czcLX9-nzaPgaFpAIF0IkSg4gE1nFhaQyxaSoZMQqTES6jCHBDLAqMgBYSqAsjVgiBSsgQpZwtoz6wd2xtzXNd4fW5eumM9q_zEEAZILFaeqphyNVmMZag1Xeej3S7HNG84Pl_GA5P1n2-P0Rr5Uu5U79T_8BVlt8-w</recordid><startdate>20220926</startdate><enddate>20220926</enddate><creator>Zhou, Zichun</creator><creator>Lei, Honggang</creator><creator>Yang, Xu</creator><creator>Qiu, Bin</creator><general>Hindawi</general><general>Hindawi Limited</general><scope>RHU</scope><scope>RHW</scope><scope>RHX</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SC</scope><scope>7SP</scope><scope>8FD</scope><scope>JQ2</scope><scope>L7M</scope><scope>L~C</scope><scope>L~D</scope><orcidid>https://orcid.org/0000-0002-8086-7004</orcidid><orcidid>https://orcid.org/0000-0001-8513-4785</orcidid><orcidid>https://orcid.org/0000-0002-5150-2778</orcidid><orcidid>https://orcid.org/0000-0002-8049-4850</orcidid></search><sort><creationdate>20220926</creationdate><title>Experimental Study of Constant-Amplitude Fatigue Performance of M39 High-Strength Bolts in Grid Structures with Bolt-Sphere Joints</title><author>Zhou, Zichun ; 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| source | Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals; Wiley Online Library Open Access; Alma/SFX Local Collection |
| subjects | Amplitudes Bolted joints Construction Cranes Cranes & hoists Design parameters Design specifications Failure mechanisms Fatigue failure Fatigue life Fatigue testing machines Fatigue tests Fracture surfaces High strength bolts Industrial plants Metal fatigue Research methodology S N diagrams Statistical analysis Tensile strength Yield stress |
| title | Experimental Study of Constant-Amplitude Fatigue Performance of M39 High-Strength Bolts in Grid Structures with Bolt-Sphere Joints |
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