Design and Numerical Simulation of Pyramidal Prefolded Patterned Thin-Walled Tubes

<div>Deformation modes of the square prefolded tubes with various values of <span class="nowrap"><svg height="11.439pt" id="M107" style="vertical-align:-2.15067pt" version="1.1" viewbox="-0.0498162 -9.28833 17.7676 11.439" width="17.7676pt" 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="M578 512C578 619 494 650 387 650H140L134 622C219 615 223 609 210 542L127 119C112 40 104 34 23 28L17 0H235C317 0 387 7 444 33C515 65 564 122 564 195C564 289 495 335 412 352V354C505 373 578 422 578 512ZM486 510C486 422 423 367 314 367H257L294 565C299 591 305 602 315 608C324 614 339 617 362 617C421 617 486 595 486 510ZM466 200C466 100 393 35 296 35C222 35 198 51 212 127L250 333H303C388 333 466 303 466 200Z"></path></g><g transform="matrix(.013,0,0,-0.013,7.813,0)"><path d="M368 703H309L44 -163H104L368 703Z"></path></g><g transform="matrix(.013,0,0,-0.013,13.174,0)"><path d="M324 430H196L233 583L223 592L145 529L120 430H54L29 396L31 388H111L56 126C33 15 54 -12 77 -12C137 -12 214 57 250 95L233 119C208 92 155 59 138 59C126 59 120 70 131 125L186 390L298 394L324 430Z"></path></g></svg>.</span> (a) S6_1 (<i>t</i> = 3 mm). (b) S6_2 (<i>t</i> = 2.5 mm). (c) S6_3 (<i>t</i> = 2.0 mm). (d) S6_4 (<i>t</i> = 1.5 mm). (e) S6_5 (<i>t</i> = 1.0 mm). (f) S6_6 (<i>t</i> = 0.75 mm).</div>

Advances in Materials Science and Engineering

fig10

Figure 10

Figure 10: Design and Numerical Simulation of Pyramidal Prefolded Patterned Thin-Walled Tubes 