Đánh giá trạng thái ứng suất bánh cán ren vít lắp đường ray tàu hảo với ta vẹt bê tông bằng phương pháp phần tử hữu hạn

DANH GIA TRANG THAI UNG SUAT BANH CAN REN VIT LAP

DlTONG RAY TAU HOA V6l TA VET BE TONG BANG

PHU ONG PHAP PHAN TU HlTU HAN

Trdn Ve Qudc - Trudng Cao ddng Thiet bi Y te

Nguyen Hun Phdn Trudng Cao ddng Kinh ti Ky thudt, Thai Nguyen

Tdm tdt:

Sir dung phuong phdp phdn tir hCru hgn plum tich trgng thdi ung .sudt cho phep xdc dinh chinh

xdc cdc dieu kien bien cua bed todn vd dnh huong ciia kit cdu din do bin cdc chi tiet mdy. Bdi

bdo trinh bdy img dung thudt todn ciia phuong phdp phdn tir huu hgn tich hgp trong phdn mim

ANSYS dexdc dinh tnrdng img .sudt ciia bdnh cdn ren vit cudng do cao. Kit qua ciia bdi hdo dua

ra tnrdng phan bo img sudt ciia bcinh cdn ren vit cudng dg cao. Ket qud ndy cd thi dugc sir dung

tinh todn, kiem tra cho cdc true cdn hinh cd dieu kien lam viec tuong tu.

Abstact:

Use finite element method to analize stress stutus enable us to detennine correctly the

boundary conditions of the problems as well as to determine the affects of structs to the

strength of machine components. This paper shows the application of the finite element

method algorithm built-in in the ANSYS software to determine the stress field of high intensity

screw roller. The results shown here are the stress distribution field of high intensity screw

roller. Tliis results can be use in calculating, testing for the shaped rollers with the same

working conditions.

I. Dat van de

Do ben dnh hudng rdt Idn den khd ndng lam vide cua banh cdn ren tir do dnh hudng nang

suat, chdt lugng va hieu qud kinh te cua qud trinh sdn xudt ren vft.

Cdc dang hdng xudt hien tren bdnh cdn: trdc, ro, mon, dfnh bd mat ren; nut tai chan ren; bi

bien dang du, gay gidn lap be mat; phd hdng tmh d chan ren hodc bi nut tai tidt dien cd ranh

then. Nguyen nhdn chfnh cua cdc dang hdng ndy la do viec tfnh todn ben cua bdnh cdn chua

thye sy chfnh xdc. Vi vay, vide lya chgn phuang phdp kiem tra ben bdnh cdn hgp.ly vd cho

ket qua ddm bdo do chfnh xdc la rdt quan trgng.

Khd khdn Idn nhdt cua bdi todn tfnh ben cho bdnh can viec dua vdo day du cac thdng sd

dieu kien bien. Vi vdy, su dyng phuang phdp phdn tii hiru ban se cho phep xdc dinh day du va

chfnh xac cdc thdng sd tren. Trong bdi bdo tdc gid trinh bdy viec su dung thudt todn cua

phuang phdp phan tii hiru han tfch hgp trong phdn mem ANSYS de gidi bai todn ben cho

bdnh edn qua dd xac dinh chfnh xac dnh hudng cua cdc yeu td (lyc cdn, nhiet do cdn, ca tfnh

cua vat lieu va ket cdu ciia bdnh cdn) den do ben ciia nd.

n. Xac dinh dieu ki£n bien ciia bai toan • •

Do chfnh xdc ket qud ciia bdi todn cd quan he mat thiet vdi viec nhap cdc didu kidn bien

khi tien hdnh tfnh. Vi vdy cdc dieu kien bien dugc dua vdo trong qud trinh tfnh phdi ddy du vd

chfnh xac.

2.1. Xac dinh lyc tac ddng len banh can

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