Page 196 - Pressure Vessel Design Manual

174 Pressure Vessel Design Manual

COMBINED STRESSES
I TENSION I COMPRESSION
I Allowable I Stress 1 Allowable

SI +ax SE = -S,-a, Sc =
S3 + ax SE = -S3-ue s, =

I -
I 1.5SE =

Contact Contact
Angle 0 K1* K2 K3 K4 K5 K7 Ks Kg Angle 0 K1* K2 K3 & K5 K, K8 Kg
120 0.335 1.171 0.880 0.401 0.760 0.603 0.340 0.053 152 0.518 0.781 0.466 0.289 0.669 0.894 0.298 0.031
122 0.345 1.139 0.846 0.393 0.753 0.618 0.338 0.051 154 0.531 0.763 0.448 0.283 0.665 0.913 0.296 0.030
124 0.355 1.108 0.813 0.385 0.746 0.634 0.336 0.050 156 0.544 0.746 0.430 0.278 0.661 0.933 0.294 0.028
126 0.366 1.078 0.781 0.377 0.739 0.651 0.334 0.048 158 0.557 0.729 0.413 0.272 0.657 0.954 0.292 0.027
128 0.376 1.050 0.751 0.369 0.732 0.669 0.332 0.047 160 0.571 0.713 0.396 0.266 0.654 0.976 0.290 0.026
130 0.387 1.022 0.722 0.362 0.726 0.689 0.330 0.045 162 0.585 0.698 0.380 0.261 0.650 0.994 0.286 0.025
132 0.398 0.996 0.694 0.355 0.720 0.705 0.328 0.043 164 0.599 0.683 0.365 0.256 0.647 1.013 0.282 0.024
134 0.409 0.971 0.667 0.347 0.714 0.722 0.326 0.042 166 0.613 0.668 0.350 0.250 0.643 1.033 0.278 0.024
136 0.420 0.946 0.641 0.340 0.708 0.740 0.324 0.040 168 0.627 0.654 0.336 0.245 0.640 1.054 0.274 0.023
138 0.432 0.923 0.616 0.334 0.702 0.759 0.322 0.039 170 0.642 0.640 0.322 0.240 0.637 1.079 0.270 0.022
140 0.443 0.900 0.592 0.327 0.697 0.780 0.320 0.037 172 0.657 0.627 0.309 0.235 0.635 1.097 0.266 0.021
142 0.455 0.879 0.569 0.320 0.692 0.796 0.316 0.036 174 0.672 0.614 0.296 0.230 0.632 1.116 0.262 0.020
144 0.467 0.858 0.547 0.314 0.687 0.813 0.312 0.035 176 0.0687 0.601 0.283 0.225 0.629 1.137 0.258 0.019
146 0.480 0.837 0.526 0.308 0.682 0.831 0.308 0.034 178 0.702 0.589 0.271 0.220 0.627 1.158 0.254 0.018
148 0.492 0.818 0.505 0.301 0.678 0.853 0.304 0.033 1 ao 0.718 0.577 0.260 0.216 0.624 1.183 0.250 0.017
150 0.505 0.799 0.485 0.295 0.673 0.876 0.300 0.032
'K, =3.14 if the shell is stiffened by ring or head (A<W2).
Figure 3-47. Coefficients