Table 3 The second stage fitting results of disc spring stress relaxation.

From: Theoretical and experimental research on long life prediction of the locking system of the space station docking mechanism

Relaxation temperature

Second stage equation ΔP/P0 = A + Blnt

Correlation coefficient

90 °C

ΔP/P0=-0.0339 + 0.02307lnt

0.99732

120 °C

ΔP/P0=-0.03902 + 0.02777lnt

0.99779

150 °C

ΔP/P0=-0.06135 + 0.04172lnt

0.99677

180 °C

ΔP/P0=-0.10077 + 0.06554lnt

0.99509

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