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Structural Analysis of Fan Section of Air Handling Unit KMW ZR 30 16/22
on Dynamic Load Defined by Seismic Spectrum OLKILUOTO 3

The highest values of stresses are in the bolts connecting the components. Location of
the most loaded screws are shown in Fig. 17. Values of those stresses are given in
Table 4. Stresses in all critical points satisfy the condition of strength.

Table 4. Stresses in the most loaded screws

Screw no. Stresses Allowable
MPa stresses
290
262 370.8 MPa
307 320.7
260 319.0 ≤ k2 = 427
139 316.9
238 314.1
310 295.3
308 288.2
289 284.7
306 272.0
271.8

Maximum displacements of the structure can be found in the midpoints of largest areas:
walls and doors. The locations of that points are shown at Fig. 18, and values of the
deflections are shown in Table 5. The values of the frame deflections do not exceed 1.63
mm.

Deflections of frames are completely negligible. Please note that the values of the frame
deflections do not exceed 0.3 mm. Enlarged deformation of the frames are shown at
Fig. 19.

It can be stated that the deflections of the structure are very small and do not pose any
threat to the stability of the structure.

Table 5. The most deflected point of the structure

Point no. Deflection
mm
67451 1.63
67450 1.63
67452 1.63
67449 1.62
67453 1.62

University of Technology and Life Sciences
Faculty of Mechanical Engineering
Department of Computer Methods