LX Thuy_Chuyên ngành Cơ kỹ thuật, cơ học ứng dụng: Tính toán hệ thanh không gian mô tả cột tháp truyền hình chịu tác dụng của tải trọng xung, sử dụng công cụ lập trình trong ANSYS

Ví dụ: Chương trình tính toán kết cấu hệ thanh mô tả cột tháp truyền hình chịu tác dụng
của tải trọng xung lực:

Mỗi thanh nối được làm từ thép chữ L, kích thước cụ thể của mô hình, vật liệu, tải trọng
được cho trong chương trình.
!--------------CHUONG TRINH TINH TOAN THAP TRUYEN HINH---------/PREP7
/TITLE,TINH TOAN COT TIN HIEU CHIU TAI TRONG XUNG VA CHAM
!/TITLE, WRITED BY LE XUAN THUY - HVKTQS
KEYW,PR_SET,1
KEYW,PR_STRUC,1
/GO
/VIEW,1, 1,2.8,0.8
/VUP,1,Z
/REPLOT
!-----------------------THONG SO PHAN TU----------------------WW1=0.03
![m] thep L: 30x30x3
WW2=0.02
![m] thep L: 20x20x3


TT1=0.003
!D0=0.05
ET,1,BEAM188
!ET,1,PIPE16
!R,1,D0,D0/2
!DK CHAN DE
SECTYPE,1,BEAM,L
SECDATA,WW1,WW1,TT1,TT1
SECTYPE,2,BEAM,L
SECDATA,WW2,WW2,TT1,TT1
!----------D1=0.02

![m]
ET,2,PIPE16
R,2,D1,D1/2
!DK CHAN DE
!------------------------VAT LIEU -----------------------------MP,EX,1,2.1E11
![N/m2]DEFINE MATERIAL PROPERTIES 2
MP,NUXY,1,0.3
MP,DENS,1,7.850E3
![kg/m3]
!---------------------XAY DUNG MO HINH HINH HOC----------------!-----------------------THONG SO DIEU KHIEN MH-----------------W0=0.5/2
![m]
W1=0.37/2
W2=0.25/2
W3=0.21/2
W4=0.18/2
W5=0.14/2
W6=0.11/2
H0=0.10
![m]-0.5m
H1=0.3
H12=0.3+H0
H2=2*H1+H0
H3=3*H1+H0
H4=4*H1+H0
H5=5*H1+H0
H6=6*H1+H0
!----------chan cot (duoi dat)
N,1,W0,-W0
!T0
N,2,W0,W0

N,3,-W0,W0
N,4,-W0,-W0
!----------Cot ang ten
N,5,W0,-W0,H0
!T01
N,6,W0,W0,H0
N,7,-W0,W0,H0
N,8,-W0,-W0,H0
!---------N,9,W1,-W1,H12
!T1
N,10,W1,0,H12
N,11,W1,W1,H12
N,12,0,W1,H12
N,13,-W1,W1,H12
N,14,-W1,0,H12
N,15,-W1,-W1,H12
N,16,0,-W1,H12
!---------N,9+1*8,W2,-W2,H2
!T2
N,10+1*8,W2,0,H2
N,11+1*8,W2,W2,H2
N,12+1*8,0,W2,H2
N,13+1*8,-W2,W2,H2
N,14+1*8,-W2,0,H2
N,15+1*8,-W2,-W2,H2


N,16+1*8,0,-W2,H2
!---------N,9+2*8,W3,-W3,H3
N,10+2*8,W3,0,H3

N,11+2*8,W3,W3,H3
N,12+2*8,0,W3,H3
N,13+2*8,-W3,W3,H3
N,14+2*8,-W3,0,H3
N,15+2*8,-W3,-W3,H3
N,16+2*8,0,-W3,H3
!---------N,9+3*8,W4,-W4,H4
N,10+3*8,W4,0,H4
N,11+3*8,W4,W4,H4
N,12+3*8,0,W4,H4
N,13+3*8,-W4,W4,H4
N,14+3*8,-W4,0,H4
N,15+3*8,-W4,-W4,H4
N,16+3*8,0,-W4,H4
!---------N,9+4*8,W5,-W5,H5
N,10+4*8,W5,0,H5
N,11+4*8,W5,W5,H5
N,12+4*8,0,W5,H5
N,13+4*8,-W5,W5,H5
N,14+4*8,-W5,0,H5
N,15+4*8,-W5,-W5,H5
N,16+4*8,0,-W5,H5
!---------N,9+5*8,W6,-W6,H6
N,10+5*8,W6,0,H6
N,11+5*8,W6,W6,H6
N,12+5*8,0,W6,H6
N,13+5*8,-W6,W6,H6
N,14+5*8,-W6,0,H6
N,15+5*8,-W6,-W6,H6
N,16+5*8,0,-W6,H6

!-----------KHOI TAO CAC PHAN TU
!-----------CHAN COT
TYPE,2
REAL,2
MAT,1
E,1,5
E,2,6
E,3,7
E,4,8
!-----------TANG 1
TYPE,1
SECNUM,1
MAT,1
E,5,9
E,6,11
E,7,13
E,8,15
E,9,10
E,10,11
E,11,12
E,12,13
E,13,14
E,14,15
E,15,16

!T3

!T4

!T5

!T6


E,16,9
!----------TYPE,1
SECNUM,2
MAT,1
E,5,10
E,6,10
E,6,12
E,7,12
E,7,14
E,8,14
E,8,16
E,5,16
!-----------TANG 2
TYPE,1
SECNUM,1
MAT,1
E,9,17
E,11,19
E,13,21
E,15,23
E,17,18
E,18,19
E,19,20
E,20,21
E,21,22
E,22,23

E,23,24
E,24,17
!----------TYPE,1
SECNUM,2
MAT,1
E,9,18
E,11,18
E,11,20
E,13,20
E,13,22
E,15,22
E,15,24
E,9,24
!-----------TANG 3
TYPE,1
SECNUM,1
MAT,1
E,17,25
E,19,27
E,21,29
E,23,31
E,25,26
E,26,27
E,27,28
E,28,29
E,29,30
E,30,31
E,31,32
E,32,25
!----------TYPE,1

SECNUM,2
MAT,1


E,17,27
E,19,25
E,19,29
E,21,27
E,21,31
E,23,29
E,23,25
E,17,31
!-----------TANG 4
TYPE,1
SECNUM,1
MAT,1
E,25,33
E,27,35
E,29,37
E,31,39
E,33,34
E,34,35
E,35,36
E,36,37
E,37,38
E,38,39
E,39,40
E,40,33
!----------TYPE,1
SECNUM,2

MAT,1
E,17+8,27+8
E,19+8,25+8
E,19+8,29+8
E,21+8,27+8
E,21+8,31+8
E,23+8,29+8
E,23+8,25+8
E,17+8,31+8
!-----------TANG 5
TYPE,1
SECNUM,1
MAT,1
E,17+16,25+16
E,19+16,27+16
E,21+16,29+16
E,23+16,31+16
E,25+16,26+16
E,26+16,27+16
E,27+16,28+16
E,28+16,29+16
E,29+16,30+16
E,30+16,31+16
E,31+16,32+16
E,32+16,25+16
!----------TYPE,1
SECNUM,2
MAT,1
E,17+16,27+16
E,19+16,25+16

E,19+16,29+16
E,21+16,27+16
E,21+16,31+16


E,23+16,29+16
E,23+16,25+16
E,17+16,31+16
!-----------TANG 6
TYPE,1
SECNUM,1
MAT,1
E,17+24,25+24
E,19+24,27+24
E,21+24,29+24
E,23+24,31+24
E,25+24,26+24
E,26+24,27+24
E,27+24,28+24
E,28+24,29+24
E,29+24,30+24
E,30+24,31+24
E,31+24,32+24
E,32+24,25+24
!----------TYPE,1
SECNUM,2
MAT,1
E,17+24,27+24
E,19+24,25+24
E,19+24,29+24

E,21+24,27+24
E,21+24,31+24
E,23+24,29+24
E,23+24,25+24
E,17+24,31+24
!--------------------XAY DUNG XONG MO HIHH------------------------------!------------------------------Lien ket---------------------------------D,1,ALL
D,2,ALL
D,3,ALL
D,4,ALL
ALLSEL
FINISH
!----------------------------MODAL ANALYSIS----------------------/SOLU
NSEL,ALL
antype,2
modopt,lanb,10
mxpand,10
solve
*get,f1,mode,1,freq
*get,f2,mode,2,freq
FINISH
!-------------------------------LOADING--------------------------/SOLU
ANTYPE,TRANS
!NLGEOM,ON
/UNITS,USER
TRNOPT,FULL
!Cu the hoa lua chon phan tich qua do
!----------------------------Dat tai ------------------------------txy=0.05
dampbetad=2*txy/(40*(f1+f2))
dampalphad=dampbetad*40*f1*f2
alphad,dampalphad

!He so can khoi luong
betad,dampbetad
!He so can do cung


!------------------------------------------------------------------!TIMINT,OFF
! Tat/mo hieu ung qua do
TIME,1E-9
SOLVE
!-------------------DAT TAI TRONG, GIAI----------------------------P1=170
![N] xung va cham
teta=6
! [s] Thoi gian tinh toan
deltat=0.025
! Buoc thoi gian (xung td trong 2 buoc tgian)
TIMINT,ON
*DO,I,1,teta/deltat,1
TIME,I*deltat
NSUBST,2
*IF,I,LE,3,THEN
F,36,FY,-P1
!A3
*ELSE
F,36,FY,0
*ENDIF
SOLVE
*ENDDO
/POST26
NSOL,2,56,U,Y, UY_2
NSOL,3,40,U,Y, UY_3

NSOL,4,32,U,Y, UY_4