Cov ntaub ntawv feem ntau pom zoo Poisson qhov piv (PR) qhov tseem ceeb tab sis cov qauv tshwj xeeb kuj tuaj yeem nthuav tawm qhov tsis zoo thiab, txawm tias tsis tshua muaj, zero (los yog ze rau xoom) PR.
Poisson tus piv ntawm 0 txhais li cas?
Yog Poisson tus piv yog xoom, ces khoom nruj.
Puas Poisson tus piv yuav tsawg dua 1?
Tus Poisson tus piv yog ib lub sij hawm tas, nws txhais tau tias Poisson tus piv rau cov khoom nyob nruab nrab ntawm 0 txog 1. Tsis muaj cov khoom uas muaj ntau tshaj 1 thiab tsawg dua 0.
Puas Poissons piv tsis zoo?
Poisson tus piv, tseem hu ua Poisson coefficient, yog qhov piv ntawm kev sib cog lus sib txuas mus rau qhov ntev txuas ntxiv nyob rau hauv ib qho bar stretched. Txij li feem ntau cov ntaub ntawv ua nyias nyias hauv ntu ntu thaum ncab, Poisson tus piv rau lawv yog qhov zoo.
Vim li cas Poisson ratio yog xoom rau cork?
Daim ntawv thov uas Poisson qhov piv yog qhov tseem ceeb
Qhov zero Poisson tus piv rau cork ua rau nws yog cov khoom siv zoo tshaj plaws ua lub raj mis stopper. Qhov no yog vim cork yuav luag tsis nthuav txawm tias thaum compressed ntawm ob sabHauv qhov sib piv, cov roj hmab nres yuav nthuav dav tom qab thaum raug axial compression.
