Khảo sát ồn rung trong khoang xe khách 29 chỗ bằng phần mềm ansys

NGHIEN CUU TRAO DOI

^HAO SAT ON RUNG TRONG KHOANG XE KHACH 29 CHO

BANG PHAN MEM ANSYS \S

SURVEYING NOISE AND VIBRATION IN COMPARTMENT

OF THE PASSENGER VEHICLE 29 SEATS BY ANSYS SOFTWARE

Nguyin Trong Hoan', Nguyin Thanh QuangS Le Quynh Mai^

'Trfldng Dai hpc Bdch Khoa Ha Ndi

^Mekong Auto Corporation

^NCS Trfldng Dai hpc Bach Khoa Ha Ndi

T 6 M TAT

Bdi bdo trinh bdy ndi dung nghien ciiu khdo sdt on trong khoang xe khdch 29 chd khi cd rung ddng

ciia khung vd xe gay nen.

Nghiin ciiu dd st( dung phUdng phdp phdn tii hUu han (PTHH) de md phdng md hinh khdng gian

khdi khdng khi ben trong khoang xe, sU dung phdn mem Ansys de gidi bdi todn. Tdi trong dat len mdhinh

Id lUckich thich gay chuyin vi tai 16 diem lap ghep bu IdnggiUa khung sdt xi vdi sdn xe, khi ddng cd Idm

viec thi khung vd xe bi rung vd gay on trong khoang xe. Ket qud da khdo sdt dUdc do dn tai vj tri bat ky

trong khoang xe vdi cdc trUdng hdp chieu ddy tam vd xe khdc nhau: 0,8; 1,0; 1,2; 1,5 mm vd loai vat Ueu

vd xe khdc bdng vdt lieu tam composite. Kit qud nghien citu dd dUa ra sd lieu cu the vd khuyen cdo ky

thudt cho nhd sdn xuat

Tii khod: Khung vd xe khdch, dn rung, PTHH, Ansys.

ABSTRACT

This article presents survey contents of noise in the compartment of passenger vehicle with 29 seats

which caused by vibrations of frame and body.

The study used the FEM method to simulate spatial patterns of air volume inside the compartment

of vehicle, used Ansys software to solve the problem. The load simulated in the model is the displacements

of floor at the 16 bolts points assembled between the frame and the floor of the vehicle. When the engine

running make the floor and frame and body of the vehicle shaking which will cause noise in the compartment

of vehicle. Survey results have been noise at any location inside the compartment of vehicle with

corresponding of sheet thickness different: 0.8; 1.0; 1.2; 1,5 mm and other materials is composite. The

research results bring out specific data and technical advice to producers.

Keywords: Frame and body of passenger vehicle, noise and vibration, FEM, ANSYS

TAP CHi CO KHi VIET NAM. Sd 12 nam 2013 ^ 9