Experimental and Constitutive Model Study on Dynamic Mechanical Behavior of Metal Rubber under High-Speed Impact Loading

Table 4

Fitting results.

Fitting results of stress-strain curve with a strain rate of 630 s^−1
A1	A2	A3	A4	A5
3.68 × 10^3	−2.32 × 10^6	8.98 × 10^8	−2.06 × 10^11	2.90 × 10^13
A6	A7	A8	A9	A10
−2.61 × 10^15	1.50 × 10^17	−5.36 × 10^18	1.08 × 10^20	−9.36 × 10^20
R^2 = 0.9998
Fitting results of stress-strain curve with a strain rate of 1410 s^−1
A1	A2	A3	A4	A5
4.69 × 10^3	−1,04 × 10^5	−2.47 × 10^8	5.97 × 10^10	−6.93 × 10^12
A6	A7	A8	A9	A10
4.74 × 10^14	−1.99 × 10^16	5.04 × 10^17	−7.11 × 10^18	4.27 × 10^19
R^2 = 0.99854
Fitting results of stress-strain curve with a strain rate of 1770 s^−1
A1	A2	A3	A4	A5
1.9 × 10^4	−5.91 × 10^6	1.13 × 10^9	−1.47 × 10^11	1.35 × 10^13
A6	A7	A8	A9	A10
−8.55 × 10^14	3.63 × 10^16	−9.59 × 10^17	1.38 × 10^19	−7.84 × 10^19
R^2 = 0.99955