On the protective capacity of a safety vest for the thoracic injury caused by falling down

Table 2 Material parameters used in the model

Part	Density (kg/m³)	Elastic modulus (MPa)	Poisson’s ratio	Stress–strain relationship	Refs.
Rib cortical	1000	40	0.45	Linear	[36]
Rib cancellous	2000	10,000	0.3	Linear	[34]
Sternum cortical	1000	40	0.45	Linear	[34, 36]
Sternum cancellous	2000	10,000	0.3	Linear	[35]
Rib cartilage	1000	49	0.4	Linear	[33]
Vertebra cortical	1000	1000	0.3	Linear	[35]
Vertebra cancellous	2500	11,000	0.4	Linear	[36]
Nucleus pulposus	1040	2300	0.4	Linear	[35]
Fibrous ring	1040	300	0.4	Linear	[35]
Foam core	240	–	–	Figure 3	[37]
Nylon fabric	1000	2000	0.32	Linear	[38]

ISSN: 1475-925X