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Практические методы и руководство по вычислению параметров трещиностойкости конструкций с применением систем MSC.Software. Внедрение прогрессивных методов ресурсного проектирования деталей авиационных ГТД с использованием продуктов MSC Часть 1. - PowerPoint PPT Presentation
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MSC.Software MSC 1 .., MSC.Software IX MSC
- 4% !!!
- MSC . . . , . : () ? MSC.Software ( )? ? : ,
, , : , ,
1 . () Nastran. ( ). . Nastran, Marc . J- Patran/Marc
() - Nastran, ( ) 1 1 [3], 1 2 - , ( ) 1 ( 3) ( ) 1 ( 4) - ( ) 1 J- (5) ( )
NASTRAN Nastran: / (CRAC2D/CRAC3D) () ( ) ;CRAC2DCRAC3D
CRAC3D : = 100/1000 = 0.1 /2 KI = 2.35 /3/2 [3] . [7], NASTRAN
KI = 2.35 /3/2 [3] . [7] NASTRAN: CRAC ,
1 D=10 ., d=5 ., c=2.5 ., =10 /2 t=20 C: =20500 /2, =0.3, 0.2=68 /2 , 1=340 /3/2
MSC.Marc ( )
K1lin(r) 1, (2) , K1(J) 1, J-, K1(delta) 1, , K1(linear) 1, , K1(Uy) 1,
L = 5 ., a = 10 ., t = 20 ., b = 80 ., H = 120 ., 0 < L/a < 1.0, 0 < L/t =< 0.4. t=20 C: =20500 /2, =0.3, 0.2=68 /2 , 1=340 /3/2. =50 /2 KI = 186.7 /3/2 [3]
KI = 186.7 /3/2 [3] J-: J=1.45, 1: - 13167 , = 1.22 . : 0.61 ., 1=183.8, 37359 .. 0.245 ., 1=184.4, 267000 ..
Chart1
180.7
183.8
184.4
= 1/L .
1
1
Sheet1
sigmaK1lin(r)K1(J)K1(delta)K1(linear)K1(Uy)K1(delta)
000000r=0.1 - r1=0.1 r2=0.2
1055.76054.12735555.67355.7
20116.000110112110103.2K1(delta) R=0.111292.1
30184.620175160165155160141
40264.000277.57236220206236216.5
50358.100486.4378.5275258378.5351.6
60466.700849607.5330309.5607.5567.1
K1180.7183.8184.4
L1.220.610.245
1/L0.81967213111.63934426234.0816326531
Sheet1
00000
55.7654.12557355.6
116110110112103.2
184.62175165160155
264277.57220236206
358.1486.4275378.5258
466.7849330607.5309.5
K1lin(r)
K1(J)
1(linear)
K1(delta)
K1(Uy)
(/**2)
1 /()**3/2
1
Sheet2
K1lin(r)
K1(J)
K1(delta)
K1(linear)
K1(Uy)
(/**2)
1 /()**3/2
1
Sheet3
= 1/L .
1
1
MSC.Marc J- J- - ,
MSC.Marc (VCCT) G , , ,
J- MSC . J- ( , , ) , , ( MSC.Software) () , , 0.1 1 . J-
A modern family of crack tip elements for MSC/Nastran. Jatin C. Parekh, Rocky R. Arnold, Peter J. Woytowitz, Anamet Laboratories Inc., San Carlos, California 94070; Presented at the MSC/NASTRAN Users conference, Universal City, California 91608, March 20-21, 1986;Hughes T. J. R., Akin J. E., Techniques for Developing Special Finite Element Shape Functions with Particular Reference to Singularities, International Journal for Numerical Methods in Engineering, Vol. 15, pp. 733-751, 1980. : 2- . ., ., ., ., ., ., ., ., ., . . .: , 1990, 448 .. , . , .: , 1975, 440 .. . , . . : . .: , 2002. 320 . . . . . .:, 1998. 364 . . . MSC.Nastran, 2006 . MSC.Software Moscow
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Traditional methods for static design fix all inputs to have 1 value. This gives 1 answer which can be compared against a requirementThank you, and I look forward to our further discussions. We can take some questions now and wrap up with our plan for going forward.