LOAD AND STRESS CALCULATIONS

Dynamic loading of disc springs occurs when the load continuously changes from preload to final load.

Table 1 Intermediate Point Values

h/t 10 20 30 40 50 60 70 75 80 90
0.30 0.11 0.21 0.32 0.42 0.52 0.62 0.71 0.76 0.51 0.91
0.40 0.11 0.22 0.33 0.43 0.53 0.63 0.72 0.77 0.82 0.91
0.50 0.12 0.24 0.35 0.45 0.55 0.64 0.73 0.78 0.82 0.91
0.60 0.13 0.25 0.36 0.47 0.57 0.66 0.75 0.79 0.84 0.92
0.70 0.14 0.27 0.39 0.49 0.59 0.65 0.77 0.81 0.85 0.92
0.80 0.16 0.29 0.41 0.52 0.62 0.71 0.79 0.83 0.56 0.93
0.90 0.17 0.32 0.45 0.56 0.65 0.74 0.81 0.85 0.88 0.94
1.00 0.19 0.34 0.48 0.59 0.69 0.77 0.84 0.87 0.90 0.95
1.05 0.19 0.36 0.50 0.61 0.71 0.79 0.85 0.88 0.91 0.96
1.10 0.20 0.37 0.52 0.63 0.73 0.80 0.87 0.89 0.92 0.96
1.15 0.21 0.39 0.54 0.65 0.75 0.82 0.88 0.91 0.93 0.97
1.20 0.22 0.41 0.56 0.68 0.77 0.84 0.90 0.92 0.94 0.97
1.25 0.23 0.43 0.56 0.70 0.79 0.86 0.91 0.93 0.95 0.96
1.30 0.25 0.44 0.60 0.73 0.82 0.88 0.93 0.95 0.96 0.98
1.35 0.26 0.46 0.63 0.75 0.84 0.91 0.95 0.96 0.96 0.99
1.40 0.27 0.48 0.65 0.78 0.87 0.93 0.97 0.98 0.99 1.00
1.50 0.29 0.52 0.70 0.83 0.92 0.98 1.01 1.01 1.02 1.01
1.60 0.32 0.57 0.76 0.89 0.98 1.03 1.05 1.05 1.05 1.03
1.80 0.38 0.67 0.88 1.02 1.12 1.14 1.14 1.13 1.11 1.06
2.00 0.44 0.78 1.Ol 1.17 1.25 1.27 1.25 1.22 1.18 1.10
2.50 0.63 1.10 1.40 1.60 1.67 1.65 1.55 1.48 1.40 1.21
3.00 0.87 1.48 1.91 2.13 2.19 2.11 1.93 1.81 1.66 1.35
3.50 1.15 1.96 2.49 2.75 2.80 2.66 2.37 2.19 1.98 1.51
4.00 1.47 2.50 3.16 3.50 3.50 3.29 2.88 2.63 2.34 1.69

Table 2 Constant M, C1 and C2

OD/ID M C1 C2
1.10 .166 .986 1.002
1.15 .232 1.001 1.025
1.20 .291 1.016 1.048
1.25 .342 1.030 1.070
1.30 .388 1.044 1.092
1.35 .428 1.058 1.114
1.40 .463 1.072 1.135
1.45 .495 1.085 1.157
1.50 .523 1.098 1.178
1.60 .571 1.124 1.219
1.70 .610 1.149 1.260
1.80 .642 1.173 1.300
1.90 .668 1.197 1.339
2.00 .689 1.220 1.378
2.10 .706 1.242 1.416
2.20 .721 1.264 1.453
2.30 .733 1.286 1.490
2.40 .742 1.307 1.527
2.50 .750 1.328 1.563
2.60 .757 1.348 1.599
2.80 .767 1.388 1.669
3.00 .773 1.426 1.738
3.20 .776 1.464 1.806
3.40 .778 1.500 1.873
3.60 .778 1.535 1.938
3.80 .777 1.570 2.003
4.00 .775 1.604 2.067

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