PSI - Issue 14

N. Venkateswaran et al. / Procedia Structural Integrity 14 (2019) 627–633 N.Venkateswaran/ Structural Integrity Procedia 00 (2018) 000–000

631

5

60

50

40

30

20

10

Amplitude in g

0

0

5

10

15

20

‐10

Time in milliseconds

Fig. 3. (b) Amplitude curve for shock load of 50 g for 18 m s

5.3 Shock in X, Y and Z – Direction After carrying out the shock analysis, for three axis separately, the stress distribution are plotted. Figures 4 (a), (b), and (c) show the stress distribution for X, Y and Z axis are 32.2 MPa, 98.7 MPa and 177.6 MPa respectively on the Assy. mounting Bracket for shock load of 50 g with 18 ms. The table 2. Shows the von-Mises stress distribution for the mounting bracket, when the shock load is applied in three different axis.

Table 2. Stress distribution for three axis

Axis

Stress distribution in MPa

X axis

32.2

Y axis

98.7

Z axis

177.6

It is to be noted that, from the shock analysis, when the shock load is applied in the Z direction, the maximum stress occurs as 177.6 MPa, is less than the Yield stress (210 MPa) of mounting bracket material.