Analysis of Criteria for Assessing Safety Distance for Focused Warhead Fragments Based on CDEM

Table 4

Accumulation of error in CDEM.

Allowable error (Smax)	Grid resolution	Time step	Number of time steps (n)	Accumulated error (Sea)	Allowable number of time steps (nmax)	Reliability index (Rs)
5%	90 × 69 × 69	1 × 10^−8s	200	0.007686768	8462.183009	42.31091504
	90 × 69 × 69	1 × 10^−9 s	2000	0.024307696	8462.183009	4.231091504
	60 × 46 × 46	1 × 10^−8 s	200	0.017295229	1671.542323	8.357711613
	60 × 46 × 46	1 × 10^−9 s	2000	0.054692316	1671.542323	0.835771161
	30 × 23 × 23	1 × 10^−8 s	200	0.069180915	104.4713952	0.522356976