A Numerical Study on the Progressive Failure of 3D Four-Directional Braided Composites

Table 4

Comparison of experiment data with predicted strength.

	Experiment values (Mpa)	Linear model		Nonlinear model
		Predicted (Mpa)	Error (%)	Nonlinear parameter 𝜅; 10^−8 (Mpa)^−3	Predicted (Mpa)	Error (%)
No. 1	425.0	318.9	−24.96	2.00	424.7	−0.07
				2.25	428.8	+0.89
				2.50	436.9	+2.80
				2.75	440.3	+3.60
				3.00	447.2	+5.22
No. 2	99.0	82.4	−16.76	2.00	95.5	−3.54
				2.25	96.5	−2.53
				2.50	97.4	−1.62
				2.75	98.7	−0.30
				3.00	99.9	−0.91