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TEST CASE 7.1 CURVILINEAR CANTILEVER BEAM UNDER THE ACTION OF CONCENTRATED FORCES AT A FREE END

Reference:

R. H. Macneal, R. L. Harder, A proposed standard set of problems to test finite element accuracy, North-Holland, Finite elements in analysis and design, 1, 1985, p. 3-20.

 

Problem description:

Curvilinear isotropic cantilever beam of rectangular cross section is subjected to concentrated transverse forces Py and Pz at the free end (bending in and out of the plane of the longitudinal axis of the beam).

 

Problem sketch:

Type of created problem:

Spatial construction (X, Y, Z, UX, UY, UZ).

 

Geometric characteristics:

R = 4.22 m; b = 0.1 m; h = 0.2 m; α = 90°.

 

Material properties:
Isotropic elastic: E = 1·107 kPa; μ = 0.25.

 

Boundary conditions:

Rigid restraint at the end: X = Y = Z = UX = UY = UZ = 0.

 

Loads:

Py = Pz = 1000 N.

 

Model description:

The system is modeled by 6 shell elements (FE type is 44).

 

Calculation results:

Target value

Analytical solution

LIRA 10

Deviation, %

v, mm

-88.536

-86.839

1.92

w, mm

454.527

441.150

2.94