Xây dựng đặc tính đàn hồi của lò xo khi nén

NGHIEN CLfU -TRAODC I

v/XAY DLTNG DAC TJNH DAN H^l COA L 6 XO KHI NEN

STUDY ON THE ELASTIC CHARACTERISTIC OF AIR SPRING ELEMENT ; |

TS. Nguyen Si Dinh, ThS. VU Manh Diing ;

Hpc vien Ky thuit Quin sU

TOM TAT

Bii bdo xay dung md hinh vdt ly vi md hinh toin h,,c md ta 'tif tinh din hSi cua Id xo khi nen

dua tren ly thuylt vl nhiet ddng lUc hoc Sau dd, md phong xiy dung dd thi bieu dien quan he gUadi

Igld xlkhi nln vdi tan so Uch thich dao dgng hing phdn mim MATLAB - SimuUnk. Ket qua co tU

tham khio cho viec nghien cUu cic he thing treo khi nen tren o to.

Tfl khoa: Bic tinh din hdi. Id xo khi nin, do cdng

ABSTRACT

In this paper, thephysical model and mathematical model that is described the elastic characteristic

of air spring based on the thermodynamics theory is developed and presented. Then frequency depend^

stiffness characteristics graph of the air spring is simulated using MATLAB - Simulink software. Th

result can be used as reference to the study of air suspension systems on automobiles.

Keywords: Elastic characteristics, air spring stiffness.

1. DAT VAN DE phuang phip dieu khiSn he thong treo.. .V6i sii

phit trien cUa cong nghe nano, co khi chinh xic,

Lo xo khi nen co nhieu Uu diem khi so viec sin xuit cic bo phin ket ciu phUc tap, vffl

sinh V(Si cic loai phan tfl din hoi khac trong be yeu cau cao vi vat lieu cua 16 xo khi nen khdng

thong treo tren 6 to (nhip la, 16 xo, thanh xoin, con li mot trd ngai Wn. Cung vdi xu hUdng

viu cao su...) do li cho phep giim khoi luong chung cin thift nang cao do em diu chuyen ding

khong treo, tUc giam tii trong dong tic dung cua 6 to, nen ngiy nay he thong treo v6i phaa

ong dutog, tranh phi buy dUdng. Ngoii ra, 16 tU dan hoi la khi nen (16 xo khi nen) dang iiitjc

xuoni

,.„ khi nen cho phep thay d6i do cUng va chieu phit tri& va Ung dung rong rii tren nhieu lo?l

cao cua 16 xo ie phu hop vdi die dilm cua tii xe du lich. xe buyt vi thim chi ci xe co tai trpng

trong tic dung, tin s6 kich thich mat dU6ng 16n. Do do, nghien citu ve he thong treo sfl dung

bing cich diSu chinh lUflng khi nen trong 16 xo, 16 xo khi nen li m6t cong viec can thie't. Cie c6ng

tao dieu kien thuin loi trong viec Ung dung cic trinh khoa hpc trpng vi ngoai nUdc di nghien

ISSN 0866-7056

TAP CHl CO KHi VI£T NAM, S6 5 nam 2016

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