Kev sib koom tes tsim 7
Cov tshuaj tiv thaiv quab yuam yog lub clamp load ntawm qhov sib koom ua ke. ∆J sawv cev rau tus nqi uas qhov sib koom ua ke tau compressed. Raws li tau piav qhia, ∆J yog me dua ∆B. Cov txiaj ntsig no sawv cev qhov tawv ntawm txhua tus
tiv thaiv. Feem ntau koj yuav pom qhov nruj ntawm lub bolt tsuas yog 1/3 txog 1/5 rau qhov sib koom ua ke. Peb yuav piav qhia ntau ntxiv txog qhov no thaum peb siv cov khoom siv sab nraud. Txog tam sim no peb lub bolt nro yog sib npaug rau preload, uas yog sib npaug rau kev sib koom ua ke. Raws li tam sim no lub nro quab yuam ntawm lub ntsia liaj qhov rooj (Fb) yog sib npaug rau compression quab yuam ntawm qhov sib koom tes (Fj),
uas yog sib npaug rau preload (Fp).
