NASFLA
NASBEM
NASMAT
NASFORM
GUI
Future Versions
Availability
Manual
Contact Us
Company Info
Code Overview
NASGRO Home

KEY TERMS:
NASGRO 
FLAGRO
life assessment
crack growth
fracture
mechanics
damage tolerance
structural integrity
analysis
materials
database
consortium
software
stress intensity
factor
boundary element
method
fracture control
critical crack size
NASA

NASGRO® Stress Intensity Factor Solutions

NASGRO 5.2 contains stress intensity factor solutions for more than 60 different configurations including surface, corner, embedded, and through-cracks in plates, cylinders, lugs, standard specimens, and other geometries. Many solutions support tension and bending loads, and the newer weight function solutions support general nonlinear (univariant or bivariant) stress gradients. Other K solutions can be imported from the NASBEM module or can be user-supplied via data tables. Solutions that are new beginning with the release of NASGRO Version 4.0 are indicated with the version number in parentheses in the lists below.

NASGRO Stress Intensity Factor Solutions

Through Cracks:

 TC01

 TC02

 TC03

 TC04

 TC05

 TC06

 TC07

 TC08

 TC09

 TC10

 TC11

 TC12

 TC13

 TC14

 TC15

 TC16

Through crack at center of plate

Through crack at edge of plate

Through crack from an offset hole in a plate

Through crack from hole in a lug

Through crack from hole in a plate with a row of holes (Version 4.0)

Through crack in a sphere

Through crack in a cylinder (longitudinal direction)

Through crack in a cylinder (circumferential direction)

Through crack from hole in a plate under combined loading

Through crack from hole in a cylinder (circumferential direction)

Through crack in center of plate weight function solution (Version 4.2)

Through crack at edge of plate weight function solution (Version 4.2)

Through crack from hole in a plate (nonlinear stress) (Version 4.1)

Through crack at edge of plate remote displacement loading (Version 5.1)

Through crack at edge of variable thickness plate weight function solution (Version 5.1)

Through crack in curved panel with bulging (Version 5.2)

Embedded Cracks:

 EC01

 EC02

Embedded crack in a plate

Embedded crack, offset, in a plate

Corner Cracks:

 CC01 Corner crack in a rectangular plate
 CC02 Corner crack from offset hole in a plate
 CC03 Corner crack from hole in a lug
 CC04

Corner crack from hole in a plate (one or two cracks)

 CC05
 

Corner crack in a rectangular plate subjected to bivariant stress (Version 4.0) (superseded by CC09)

 CC07 Corner crack from hole in a plate (new soln for one crack, tension and pin loads)
 CC08 Corner crack from hole in a plate subjected to nonlinear stress (Version 4.1)
 CC09

Corner crack in a rectangular plate subjected to bivariant stress (Version 4.2)

 CC10 Corner crack from hole in a plate subjected to bivariant stress (Version 5.0)

 CC11

Corner crack in a plate subjected to univariant stress (Version 5.2)

Surface Cracks:

 SC01

 SC02

 SC03

 SC04

 SC05

 SC06

 SC07

 SC08

 SC09

 SC10

 SC11

 SC12

 SC13

 SC14

 SC15

 SC17

 SC18

 SC19

Surface crack in a rectangular plate tension and/or bending

Surface crack in a rectangular plate nonlinear stress

Surface crack in a spherical pressure vessel

Longitudinal surface crack in a hollow cylinder nonlinear stress

Thumbnail crack in a hollow cylinder

Circumferential crack in a hollow cylinder nonlinear stress

Thumbnail crack in a solid cylinder

Thumbnail crack in a threaded, solid cylinder

Circumferential crack at thread root in a cylinder

Circumferential crack in a threaded pipe nonlinear stress

Surface crack from hole in a plate (one or two cracks)

Surface crack from hole in a lug (one or two cracks)

Surface crack in bolt head fillet - Shear bolt

Surface crack in bolt head fillet - Tension bolt

Surface crack in a plate subjected to bivariant stress (Version 4.0) (superseded by SC19)

Surface crack in a rectangular plate nonlinear stress (Version 4.1)

Surface crack from hole in a plate nonlinear stress (Version 5.0)

Surface crack in a plate, bivariant weight function solution (Version 5.1)

Standard Specimens:

 SS01

 SS02

 SS03

 SS04

 SS05

 SS06

 SS07

 SS08

 SS09

 SS10

 SS11

 SS12

Center-cracked tension specimen M(T)

Compact tension specimen C(T)

Disc-shaped compact tension specimen DC(T)

Arc-shaped tension specimen A(T)

Three-point bend specimen SE(B)

Edge cracked tension specimen SE(T) constrained ends

Notched round bar specimen R-bar(T) circumferential crack

Notched plate with a surface crack

Notched plate with a corner crack

Notched plate with a through crack

Corner crack in a plate from symmetric hole

Eccentrically-loaded single edge crack tension specimen ESE(T) (Version 5.0)

Data Tables:

 DT01

 DT02

 DT03

 DT04

One-dimensional data table for through cracks

Two-dimensional data table for through cracks

Two-dimensional data table for part-through cracks

Two-dimensional data table for part-through cracks from hole or fillet

Polynomial Series:

 PS01

F0 = C0 + C1*u + C2*u**2 + ... + Cn*u**n    where u = (a/D)**m

Boundary Element Models:

 BE02

 BE03

Two through cracks from either side of an offset hole in a plate (Version 4.0)

One through crack, one corner crack on either side of an offset hole in a plate (Version 4.0)


Materials Engineering Department Structural Engineering Department
  Mechanical Engineering Division SwRI Home

Southwest Research Institute® (SwRI®) is an independent, nonprofit, applied engineering and physical sciences research and development organization with 10 technical divisions using multidisciplinary approaches to problem solving. The Institute occupies 1,200 acres and provides more than 2 million square feet of laboratories, test facilities, workshops, and offices for more than 2,700 employees who perform contract work for industry and government clients.