Page 15 - raport symulacja

Structural Analysis of Fan Section of Air Handling Unit KMW ZR 30 15/22
on Dynamic Load Defined by Seismic Spectrum OLKILUOTO 3

Table 2. Allowable stresses Allowable
stresses
Component Yielding stress Safety factors
type MPa MPa

walls and 235 1.5 k1 = 157
frames 640 1.5
screws k2 = 427

The stresses in the frames and surfaces of membranes are of the order of several MPa’s
only, Fig. 16. Stresses in all critical points clearly satisfy the condition of strength,
Table 3.

Table 3. Equivalent stresses in membrane parts

Point no. Equivalent stress Allowable
MPa stresses

61515 14.5 MPa
61516 14.48
61514 11.7 ≤ k1 = 157
61517 11.5

Fig. 16. Equivalent stresses in membrane parts

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