Formulas: random vibration excitation

MIL-STD-810H, Environmental Engineering Considerations and Laboratory Tests

Last Updated 29 Oct 2026

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Formula 1

The MRS is calculated by considering the average number of times a threshold of the response $z=a$ is exceeded with a positive slope for a time T.

z=a

Considering a threshold which is exceeded only once on the average, and setting $\mathrm{N}_{\mathrm{a}}^{+}=1$

\mathrm{N}_{\mathrm{a}}^{+}=1

MIL-STD-810H, Environmental Engineering Considerations and Laboratory Tests

Last Updated 29 Oct 2026

Hover any section to copy its link or text, ask Copilot about it, or bookmark it.

The MRS is calculated by considering the average number of times a threshold of the response $z=a$ is exceeded with a positive slope for a time T.

z=a

Considering a threshold which is exceeded only once on the average, and setting $\mathrm{N}_{\mathrm{a}}^{+}=1$

\mathrm{N}_{\mathrm{a}}^{+}=1