Mô hình và phương trình dao động của xe chữa cháy rừng đa năng

NGHIEN ClJfU - TRAO OOl

MO HINH V^ PHCrONG TRINH DBO DQNG

CUfl XE CH()f6 CH^Y RCTNG DS N^NG

Ths. Nguyin Xa H^i', TS. Dfldng VSn Tdi^

'Trfldng Dai hpc Phdng chdy Chfla chdy, ^Trfldng Dai hpc Ldm nghi|p

TOM TAT

Xe chUa chdy riing da ndng hogt dgng trong riing khdng co diidng, khi hogt dong chiu lUc kich

dgng cua mdp mo mat ddt riing vd cdc lUc kich dgng cua cdc hi thong cong tdc tren xe, tU do gdy ra cho

xe dao dgng ldn vd tdi trgng dgng dao dgng ndy dnh hUdng den on dinh vd do ben cdc he thong cong tdc

tren xe. Bdi bdo ndy gidi thieu ket qud xdy dUng md hinh tinh todn dao dgng cua xe, ket qud thiet lap cdc

phi/dng trinh vi phdn dao dgng cua xe bao gom: bieu thiic dgng ndng, the ndng cua he, bieu thilchdmhcui

tdn vd bieu thiic liic suy rgng ciia he.

Tii khoa: Dao dgng xe chCta chdy riing; Xe chita chdy riing da ndng; Mo hinh dao dgng cua xe

chUa chdy riing

ABSTRACT

Multifunction forest fire fighting vehicle operates in forest without roads, so while operating it is

impacted by a number of forces caused by the pits and bumps of terrain and workpiece and tool. Thereby

causing for the vehicle a large vibration and dynamic load that affect the stability and durability of work￾piece and tool systems mounted on the vehicle. This paper introduces the results of vibration calculation

model of the vehicle. The result has been used for building the vibration differential equation of the vehicle

including: kinetic energy expression; potential energy expression; dissipation equation expression and gen￾eralization expression.

Keywords: vibration of forest fire fighting vehicle; multi-function forest fire fighting vehicle; vibra￾tion model of forest fire fighting vehicle.

A. r^i. r.'^ /•rrn.A^^ 1 «3m ')nn ^ TAP CHf CO KHf VlfiT NAM • Sd 03 (Thang 3 nam