IFMASS8

Model of the limestone-mill

max

=2.70 cm

=640 kN

Stress field of sleeve and shell

Model contour, loading and deformation

Figure 31. The analysis for reconstruction of the sleeve of limestone-mill “UNIDIAN”

Considered model variants are: changed sleeve cross-section area and thickness in the

saddle support zone,

from 2.75 to 6 cm; and next to this zone,

from 4.5 to 7.5 cm

(Fig. 32).

Based on computational results, presented in Fig. 33 and in Table 12, for this type of

support, the thickness of the sleeve cylinder had dominant effect on the stress field. The

stress value had decreased 3 times, the stress concentration is reduced, changes in stiff-

ness are reduced and welding had been performed in the longitudinal direction. Model B,

from Table 12, has been accepted and made, enabling the successful functioning of the

sleeve.

1=2.75 cm,

2=4.50 cm,

3=3.75 cm,

4=7.50 cm,

h1=10.0 cm, h2=35.5 cm l1= 85 cm

F=30 kN

27.0

27.5

Stress 0–27.5 kN/cm

Stress 0–10 kN/cm

Figure 32. A variant of sleeve cross-section

Figure 33. Stress field on old and new model

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