Ibholithi yesakhiwo sentsimbi ekusetyenzisweni iya kwahluka ngokwamandla okusetyenziswa okwahlukileyo kwendawo ikwahlukileyo, ngoko ke ukugweba njani ibakala lamandla?
Ubume bentsimbi ibakala lamandla:
Umgangatho wamandla webholithi yesakhiwo sentsimbi yokudityaniswa kwesakhiwo sentsimbi yi-3.6, 4.6, 4.8, 5.6, 6.8, 8.8, 9.8, 10.9, 12.9, njl njl. Ixabiso lamandla e-tensile eliqhelekileyo kunye nomlinganiselo we-flexion we-steel structure bolt material.
Umzekelo, iibholiti zentsimbi zebakala 4.6.Intsingiselo yile:
I-1, intsimbi yesakhiwo sebholithi yentsimbi, imveliso yamandla egama lingu-400 × 0.6 = 240MPa umgangatho womgangatho wokusebenza we-10.9 amandla aphezulu ebhowunti yesakhiwo sentsimbi.
2. Umlinganiselo wamandla ocinezelayo we-steel structure bolt material yi-0.6;
3, ubume bentsimbi yebholithi yesixhobo sokuqina ukuya kuthi ga kwi-400MPa;
Emva kokunyanga ubushushu, izinto eziphathekayo zinokufikelela:
I-1, intsimbi yesakhiwo sebholithi yesixhobo sokuqina kwe-1000 × 0.9 = 900MPa ibakala
2. Umlinganiselo wamandla e-buckling ye-bolt yesakhiwo sensimbi ngu-0.9;
3, intsimbi yesakhiwo ibholithi imathiriyeli yentsimbi ebizwa ngokuba yi-1000MPa;
Intsingiselo yesakhiwo sentsimbi inqanaba lokuqina kwebholithi ngumgangatho wamazwe ngamazwe, ibholithi yesakhiwo sentsimbi yenqanaba elifanayo lokusebenza, kungakhathaliseki ukuba izinto zayo kunye nokwahlukana kwendawo yokuvelisa, ukusebenza kwayo kuyafana, khetha ibakala lokusebenza kuphela kwi-design can.
Amanqanaba anamandla e-8.8 kunye ne-10.9 abhekiselele kumabakala oxinzelelo lwe-shear yeebholiti zentsimbi ye-8.8GPa kunye ne-10.9 GPa.
8.8 Amandla okuqina okuqhelekileyo 800N/MM2 Amandla emveliso yesiqhelo 640N/MM2
Ibholithi yolwakhiwo lwentsimbi ngokubanzi ichazwa ngokuthi “XY”,X*100= amandla okuqina ebhowuthi yesakhiwo sentsimbi,X*100*(Y/10)= amandla esivuno sebholithi yesakhiwo sentsimbi (njengoko kuchaziwe kwileyibhile: isivuno amandla / amandla okuqina = Y / 10), njenge-4.8, amandla okuqina kwentsimbi yesakhiwo sentsimbi: 400MPa, amandla okuvelisa: 400 * 8/10 = 320MPa.
Oku ngasentla linqanaba lamandla ebholithi yesakhiwo sentsimbi, sisetyenziswa ngokwebakala elahlukileyo lokusebenzisa, kwisakhiwo esisetyenziswayo ngokuqhelekileyo kukho ibholithi yomgangatho ophezulu wokuqina.
Ixesha lokuposa: Oct-30-2021