Research on the Numerical Calculation Method for Antiloosening Performance of Screwed Joints under Complex Working Conditions

<table class="table-group" id="tab4"><tr><td><table class="table"><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr class="thead"><td class="align_left">Calculation/assessment result</td><td class="align_center">Shock absorber-body SJS</td><td class="align_center">Crossarm-subframe SJS</td></tr><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr><td class="align_left">Assembly preload, FM (N)</td><td class="align_center">32500</td><td class="align_center">25300</td></tr><tr><td class="align_left">Loss of preload, FZ (N)</td><td class="align_center">2311</td><td class="align_center">2268</td></tr><tr><td class="align_left">Residual clamp load, FKR (N)</td><td class="align_center">24911</td><td class="align_center">22782</td></tr><tr><td class="align_left">Axial load, FAS (N)</td><td class="align_center">30463</td><td class="align_center">23034</td></tr><tr><td class="align_left">Transverse load, FQS (N)</td><td class="align_center">1161</td><td class="align_center">76</td></tr><tr><td class="align_left">Torsion about the bolt axis, MYS (N·mm)</td><td class="align_center">21469</td><td class="align_center">1034</td></tr><tr><td class="align_left">Bending moment, MSb (N·mm)</td><td class="align_center">35037</td><td class="align_center">7862</td></tr><tr><td class="align_left"><svg height="12.7178pt" id="M98" style="vertical-align:-3.42947pt" version="1.1" viewbox="-0.0498162 -9.28833 59.8672 12.7178" width="59.8672pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><g transform="matrix(.013,0,0,-0.013,0,0)"><path d="M797 0V26C739 32 732 36 732 103V296C732 394 682 449 605 449C576 449 550 437 529 423C504 407 475 389 446 366C425 418 382 449 334 449C303 449 279 437 253 421C222 403 201 385 180 371V452C135 432 85 419 41 411V388C99 379 102 374 102 310V103C102 38 93 32 27 26V0H238V26C189 32 180 38 180 103V338C210 363 250 390 289 390C351 390 377 348 377 275V103C377 37 368 32 306 26V0H520V26C465 32 456 38 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230V280H52V230H535Z"></path></g><g transform="matrix(.013,0,0,-0.013,46.796,0)"><path d="M619 670C619 686 593 712 555 712S459 686 410 634S335 504 320 430H250L219 400L222 388H312L258 73C223 -133 201 -166 187 -180C175 -191 158 -199 140 -199C123 -199 88 -188 74 -172C68 -166 63 -164 54 -171C38 -185 23 -201 23 -215C23 -236 60 -261 93 -261C122 -261 161 -247 207 -200C268 -138 300 -71 337 94C365 220 376 277 394 387L501 399L521 430H401C432 623 464 665 501 665C524 665 544 651 567 627C577 617 583 618 592 625C601 631 619 651 619 670Z"></path></g><g transform="matrix(.013,0,0,-0.013,55.148,0)"><path d="M283 255V284C195 290 192 337 192 375C192 436 200 508 200 580C200 696 116 709 54 709V681C127 671 139 634 139 588C138 524 125 452 125 387C125 333 149 286 209 272V268C148 253 125 206 125 151C126 87 139 16 139 -47C139 -92 127 -131 54 -141V-169C115 -169 200 -152 200 -41C200 32 192 104 192 164C192 202 195 249 283 255Z"></path></g></svg> (N·mm−2)</td><td class="align_center">93</td><td class="align_center">−75</td></tr><tr><td class="align_left">Assessment results</td><td class="align_center">Loosening</td><td class="align_center">Not loosening</td></tr><tr class="table-tr"><td colspan="3"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Calculation and assessment results for loosening by rotation.</div>

Mathematical Problems in Engineering

tab4

Table 4

Table 4: Research on the Numerical Calculation Method for Antiloosening Performance of Screwed Joints under Complex Working Conditions 