A glass fiber(GF)/polydicyclopentadiene(PDCPD)composite impact simulation model was established based on LS-DYNA(the finite element analysis software peroduced by Livermore Software Technology Corporation)simulation.A...A glass fiber(GF)/polydicyclopentadiene(PDCPD)composite impact simulation model was established based on LS-DYNA(the finite element analysis software peroduced by Livermore Software Technology Corporation)simulation.An optimal ply thickness of the composite GF/PDCPD was determined as 3.0 mm,and thus the final intrusion depth was controlled within 8.8 mm,meeting the performance standards for battery electric vehicle protection materials.A comparative analysis of failure modes during impacts was conducted for composites GF/PDCPD,GF/polypropylene(PP)and GF/polyamide(PA).The results indicated that GF/PDCPD exhibited compressive failure modes and ductile fractures,resulting in smaller damage areas.In contrast,GF/PP and GF/PA showed fiber fracture failures,leading to larger damage areas.The molding process and impact resistance of GF/PDCPD were investigated.By comparing the impact performance of GF/PDCPD with that of GF/PP and GF/PA,it was concluded that GF/PDCPD demonstrated superior performance and better alignment with the performance standards of battery electric vehicle protective materials.The predictability and accuracy of LS-DYNA simulation was verified,providing a theoretical foundation for further in-depth research.展开更多
文摘A glass fiber(GF)/polydicyclopentadiene(PDCPD)composite impact simulation model was established based on LS-DYNA(the finite element analysis software peroduced by Livermore Software Technology Corporation)simulation.An optimal ply thickness of the composite GF/PDCPD was determined as 3.0 mm,and thus the final intrusion depth was controlled within 8.8 mm,meeting the performance standards for battery electric vehicle protection materials.A comparative analysis of failure modes during impacts was conducted for composites GF/PDCPD,GF/polypropylene(PP)and GF/polyamide(PA).The results indicated that GF/PDCPD exhibited compressive failure modes and ductile fractures,resulting in smaller damage areas.In contrast,GF/PP and GF/PA showed fiber fracture failures,leading to larger damage areas.The molding process and impact resistance of GF/PDCPD were investigated.By comparing the impact performance of GF/PDCPD with that of GF/PP and GF/PA,it was concluded that GF/PDCPD demonstrated superior performance and better alignment with the performance standards of battery electric vehicle protective materials.The predictability and accuracy of LS-DYNA simulation was verified,providing a theoretical foundation for further in-depth research.
