Iyo spiral seam yakanyura arc welded simbi pombi inoboorwa mukutenderera uye inotanga kupinda munyoro kuumbwa.Pasi pekuita kwe tri-cone, chibooreso chinotanga kuburitsa elastic shear deformation ye stratum uye yozobviswa pasi pekumanikidzwa kwe tri-cone.Munzvimbo inofananidzwa, ivhu rakapfava ivhu rakafanana, zvisinei netambo uye kuputika muvhu.Horizontal directional drilling inoitwa mukukurumidza kuumbwa, uye magadzirirwo ari mune zvisina kujairika uye ane simba kusangana neroller cone bit.Kupokana kunoitika kana koni yasangana nepasi.Simba rekuita rinoita kuti spiral seam yakanyura arc welded simbi pombi izununguke.Kana iyo tri-cone bit ikafamba kubva payakapfava kuumbwa ichienda kune yakaoma kuumbwa, inozoburitsa hombe lateral vibration uye kumusoro nekudzika kwevibration.

Kana kumhanya kwekuchera kuri 0.008m/s uye bhiti kutenderera kumhanya kuri 2 radians/s, pseudo-strain simba curve panguva yekufambira mberi kweiyo roller cone bit inonyanya kusanganisira viscosity uye elasticity.Nekudaro, sezvo izwi rekuti viscous rinowanzo kutonga, shanduko yesimba rakawanda kuita pseudo strain simba haidzokerike.Iyo deformation simba ye spiral seam yakanyura arc welded simbi pombi ndiro simba guru rinoshandiswa kudzora deformation ye hourglass.Kana iyo pseudo strain energy yakawandisa, zvinoreva kuti simba rekumanikidza rinodzora deformation ye hourglass yakakura kwazvo, uye mesh inofanira kunatswa kana kuchinjwa.Kuderedza kuwandisa kwepseudo strain simba.Iko kamwe-kamwe kushanduka kwepseudo strain simba mumuenzaniso uyu kunonyanya kuitika kana chibooreso chichipinda muvhu rakapfava uye bhiti rekoni rinopfuura nepakati pekusangana kwekuchinja kamwe kamwe.Iyo yakakura kuoma kwekuumbwa, iyo yakakura iyo pseudo strain simba re drill bit mukugadzira.Tevedzera nzira yekuchera ye spiral welded pombi mukukurumidza kuumbwa uye kufanotaura shanduko yekuchera bhiti rekuchera trajectory.