Оценка качества построения конечноэлементной модели в ANSYS


232 46 598KB

Russian Pages 6

Report DMCA / Copyright

DOWNLOAD PDF FILE

Recommend Papers

Оценка качества построения конечноэлементной модели в ANSYS

  • 0 0 0
  • Like this paper and download? You can publish your own PDF file online for free in a few minutes! Sign Up
File loading please wait...
Citation preview

Э

ANSYS

. . .

,

"

",

. , [1]. ,

, . ,

20-40%

[2]. .

,

[3] , . ,

. 1.

1 (SEQV)

,

f = −8,505

, ,

(1)

. 1.

UY. .

. 2. UY

BEAM4 1.

,E

210000 0,3

[3] ,

, SEQVMAX, UYMAX,

SOLID92 10

2,5

SOLID45 10

367 838

17890 28538

42 132

665,14 -8,441

701,4 -8,463

596,17 -8,449

2,5 2688 3825 100 684,05 -8,456

SOLID95 10

4

2,5

10

42 412

2688 14065

21 22

632,32 -8,41

630,42 -8,462

615 -8,514

Р l Е J a

P ⋅l4 f =− 24 ⋅ E ⋅ J – – – – –

 a3 a 4  ⋅  3 − 4 ⋅ 3 + 4  , l l  

,

(1)

,

, , , . (

,

(

1), . 1)

, BEAM4 [3].

,

, . , [1, 2]. ,

SOLID 45 [3],

SOLID92 . 3

4.

,

(

. 1),

, .

,

, . ,

.

. 3.

. 4. SOLID45

SOLID92 , , [1, 5].

,

,

, ,

,

,

. ,

, ,

[1].

, .

,

, [1]. (NSOL)

(NSOL)

∆1 =

,

ESOL − NSOL ⋅ 100% , ESOL

(2)

10%, . ,

FullGraphics, (SMNB) [1, 5].

(SM B)

, ,

, (SMN)

(SMX)

∆2 =

:

SMNB − SMN SMXB − SMX ⋅ 100% , ∆3 = ⋅ 100% SMNB SMXB 10%, ,

(3)

. , ,

,

,

, . . 5, .

, ,

,

. 6. .7

8,

SOLID92 – –

, (

,

. 5)

[2].

. 5.

. 6.

2. SOLID45

. 7.

. 8. SOLID45

SOLID 92 2.

[3]

SOLID45

,

SOLID92

3

3

3,5

15776 20600

61727 94899 210000 0,3

31401 56328

,E

, ( ,

2)

,

,

, (

2).

, . ( . 5), . 9.

, (SMX)

, (SMXB),

, 3 4. ,

3 4,

, . , , (3

)

. , – k=1,34. ,

14%-15%.

k=1,3, ,

,

3.

, , SMX SMXB

3

3

3,5

SMX SMXB 649,619 665,274

SMX 668,092

2,41%

3,13%

SMXB 689,001

SMX 662,438

SMXB 693,303

4,66% 4.

, , SMX SMXB . 10

3

3

3,5

SMX SMXB 649,557 665,01

SMX 654,099

2,38%

3,18%

SMXB 674,879

SMXB 673,636

4,75%

11 SOLID45 (

. 7) ,

SOLID92 (

. 8) ,

.

,

, (

(

SMX 643,094

.7 8)

. 12. ( .

7)

. 12). Э , (

. 10), .

660

640

620 ESOL45 NSOL45

600

ESOL45( x) 580 NSOL45( x) 560

540

520

. 9.

19

17

15

13

11

ESIZE , ESIZE , x

9

7

. 10. SOLID45

(

SOLID45)

5

3

720

10

8

700

ESOL92

6 680

∆45( x)

NSOL92

∆92( x)

ESOL92( x)

4

NSOL92( x) 660

2 640

0

620

19

17

15

13

11

ESIZE , ESIZE , x

9

7

5

3

2

19

17

15

13

11

9

7

5

3

x

. 11.

. 12. ESOL NSOL (

SOLID92 (

SOLID45)

. 8)

(

. 12).

,

, . ⋅ ⋅

: ; PowerGraphics. ,



; (

)

, FullGraphics.

1. Crawford, John. Guidelines for good Analysis: A step-by-step process for obtaining meaningful results // ANSYS Solutions. – Fall 2003. – p. 69-74. 2. Crawford, John. Evaluating Mesh Density //Ansys Solutions. – 1999. – Volume 1. Number 2. – p. 12 – 16. 3. ANSYS Element Reference. ANSYS Release 8.1 Documentation. ANSYS Inc., 2004. 4. / . ., . ., . .; . . . . - 2., . .: . , 1988. 736 . 5. Crawford, John. Interpreting Your Analysis Results: Spend time reviewing the answers to understand what they really mean // ANSYS Solutions. – Spring 2004. – p. 36-38.