A "rotational" nthwv dej tseem hu ua "equivoluminal" nthwv dej, vim tias tsis muaj qhov hloov pauv yuav tshwm sim thaum lub sijhawm nthwv dej. Lub rotational nthwv dej kuj tseem hu ua "distortional" nthwv dej lossis "secondary (S) yoj". … Cov particle motion nyob rau hauv ib tug dilatational nthwv dej yog longitudinal, i.e., raws li cov kev taw qhia ntawm yoj propagation.
Puas yog shear yoj equivoluminal?
Cov nthwv dej equivoluminal no tseem hu ua shear nthwv dej lossis yoj ntawm distortion. Hauv cov ntsiab lus, thaum muaj xwm txheej xws li kev tawg tshwm sim, ob hom nthwv dej sib txawv tshwm sim, irrotational nthwv dej uas ua rau muaj kev hloov pauv hloov pauv, thiab equivoluminal nthwv dej uas ua rau equivoluminal displacements.
Ntshai yog dab tsi?
Ib txoj kev ntxhov siab yog ib daim ntawv ntawm acoustic nthwv dej uas taug kev ntawm qhov nrawm nrawm hauv ib qho khoom. Txhua qhov kev ntxhov siab yuav ua rau muaj qhov tsis sib xws, ua rau cov khoom txav mus los thiab kho lawv tus kheej mus rau qhov kev ntxhov siab tsis sib xws.
YElastodynamic yog dab tsi?
Txoj kev kawm ntawm cov nthwv dej elastic thiab lawv cov yam ntxwv ntawm kev nthuav tawm hauv linear elasticity nrog kev hloov pauv hauv lub sijhawm.
Dilatational yoj yog dab tsi?
1. n. [Geophysics] Ib lub cev yoj yoj lub cev los yog lub suab nthwv dej uas cov khoom ua haujlwm oscillate nyob rau hauv kev coj tus nthwv dej propagates.
