Combining　MAEAM　with　the　lattice　dynamics,　the　atomic　force　constants　and　phonon　dispersion　curves　have　been　obtained　along　five　symmetry　directions　[00　zeta],　[0　zeta　zeta],　[zeta　zeta　zeta],　[1/2　1/2　zeta]　and　[zeta　zeta　1]　for　three　BCC　transition　metals　Ta,　W　and　Mo　within　interactions　out　to　the　sixth　neighbors.　The　calculated　results　that　are　nearly　in　agreement　with　available　experimental　results　along　[00　zeta],　[0　zeta　zeta]　and　[zeta　zeta　zeta]　directions　implies　that　the　predicted　phonon　dispersion　curves　along　[1/2　1/2　zeta]　and　[zeta　zeta　1]　directions　are　well　behaved.　Along　each　symmetry　2　9　direction,　the　vibration　frequency　that　increases　for　Ta,　W　and　Mo　successively　may　be　related　to　the　ratio　of　cohesive　energy　E-c　to　mass　M.　(c)　2606　Elsevier　B.V.　All　rights　reserved.