Bionic Design of the Bumper Beam Inspired by the Bending and Energy Absorption Characteristics of Bamboo

Table 1

Structure parameters of bamboo samples (unit: mm).

Sample	Ltotal	m (g)	Dav	Tav	L1	L2	L3	L4	L5	Moisture content (%)
U0	250	124.61	41.91	4.65	250					20.81
U1	250	158.89	48.68	5.06	125	125				22.76
U2	735	442.46	44.41	5.27	145	440	150			16.18
U3	949	661.22	48.15	5.4	150	320	329	150		15.91
U4	1580	977.1	40.47	4.78	150	420	430	430	150	18.28
M0	247	247.17	58.54	5.65	247					25
M1	250	281.85	63.04	5.96	125	125				29.87
M2	658	787.37	63.4	6.61	145	363	150			31.47
M3	862	1088	65.48	6.3	150	277	285	150		28.12
M4	1425	1822.73	65.43	6.78	150	390	380	355	150	29.82
D0	232	337.7	74.55	7.55	232					25.88
D1	250	424.7	76.75	7.96	125	125				31.6
D2	545	861.18	71.12	7.79	145	250	150			20.78
D3	777	1312.32	72.12	8.07	145	230	252	150		18.4
D4	1052	1788.92	71.81	7.84	147	230	255	270	150	23.04