TY - JOUR
T1 - Understanding the static performance of composite helical springs with braided nested structures
AU - Chen, Ling
AU - Chong, Joel
AU - Jiang, Qian
AU - Wu, Liwei
AU - Tang, Youhong
PY - 2024/1
Y1 - 2024/1
N2 - Application of composite helical springs (CHSs) is constrained by their poor static compression performance. In this study, a novel composite helical spring with a braided nested structure (BNCHS) is proposed. The fiber volume fraction (Vf) of BNCHS with braided angle of 15° and 30° (BNCHS15° and BNCHS30°) only increases by 0.9% and 1.8% respectively comparing with that of unidirectional composite helical spring with Vf of 55% (UCHS55%). The compression experimental results show that the spring constant of BNCHS15° and BNCHS30° can reach 105.4% and 171.4% higher than that of UCHS55% respectively. The internal mechanism of significantly improving compression performance of BNCHS is revealed by using a meso model. Numerical result shows that the mises stress of BNCHS15° and BNCHS30° can be 2.43 and 3.14 times higher than that of UCHS55% respectively. Finally, the resilience and specific spring stiffness of BNCHS and steel are compared, highlighting the obvious advantage of static performance of BNCHS.
AB - Application of composite helical springs (CHSs) is constrained by their poor static compression performance. In this study, a novel composite helical spring with a braided nested structure (BNCHS) is proposed. The fiber volume fraction (Vf) of BNCHS with braided angle of 15° and 30° (BNCHS15° and BNCHS30°) only increases by 0.9% and 1.8% respectively comparing with that of unidirectional composite helical spring with Vf of 55% (UCHS55%). The compression experimental results show that the spring constant of BNCHS15° and BNCHS30° can reach 105.4% and 171.4% higher than that of UCHS55% respectively. The internal mechanism of significantly improving compression performance of BNCHS is revealed by using a meso model. Numerical result shows that the mises stress of BNCHS15° and BNCHS30° can be 2.43 and 3.14 times higher than that of UCHS55% respectively. Finally, the resilience and specific spring stiffness of BNCHS and steel are compared, highlighting the obvious advantage of static performance of BNCHS.
KW - A: Carbon fibres
KW - C: Finite element analysis (FEA)
KW - D: Failure
KW - D: Mechanical testing
UR - http://www.scopus.com/inward/record.url?scp=85173871262&partnerID=8YFLogxK
UR - http://purl.org/au-research/grants/ARC/IC190100034
U2 - 10.1016/j.compositesa.2023.107822
DO - 10.1016/j.compositesa.2023.107822
M3 - Article
AN - SCOPUS:85173871262
SN - 1359-835X
VL - 176
JO - Composites Part A: Applied Science and Manufacturing
JF - Composites Part A: Applied Science and Manufacturing
M1 - 107822
ER -