Fig. 1 Schematic configuration and lay-out of a surge line.
Fig. 2 Acceleration time-history at each support point.
Fig. 3 Displacement time-history at each support point.
Fig. 4. Finite element model of the surge line.
Fig. 5 Accumulated equivalent plastic strain distribution of the surge line calculated applying the acceleration time history with baseline correction.
Fig. 6 Equivalent plastic strain distribution considering cyclic plasticity of the surge line calculated applying the acceleration time history with the baseline correction.
Fig. 7 von Mises effective stress distribution of the surge line calculated applying the acceleration time history with the baseline correction.
Fig. 8 Comparison of the displacement distributions at final time among the various cases.
Fig. 9. Variation of the accumulated equivalent plastic strain time histories on the maximum value generation location according to application of the baseline correction and the acceleration/ displacement time histories.
Fig. 10 Variation of the equivalent plastic strain time histories considering cyclic plasticity on the maximum value generation location according to application of the baseline correction and the acceleration/displacement time histories.
Fig. 11 Variation of the von Mises effective stress time histories on the maximum value generation location according to application of the baseline correction and the acceleration/displacement time histories.
Table 1. Physical properties of SA508 Gr.3 Cl.1 and SA182 TP316 at 316 oC.
Table 2 Chaboche hardening model parameters of SA508 Gr.3 Cl.1 and SA182 TP316 at 316˚C13).
Table 3 Comparison of the maximum accumulated equivalent plastic strain value vs. application of the baseline correction and the acceleration/displacement time histories.
Table 4 Comparison of the maximum equivalent plastic strain (considering cyclic plasticity) value and maximum value generation time vs. application of the baseline correction and the acceleration/displacement time histories.
Table 5 Comparison of the maximum von Mises effective stress value and maximum value generation time vs. application of the baseline correction and the acceleration/displacement time histories.
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