Experimental study on dynamic mechanical behaviors of polycarbonate
作者： Wei Zhang , Yubo Gao , Nan Ye , Wei Huang , Dacheng Li
DOI: 10.1063/1.4971677
关键词: Deformation (engineering) 、 Constitutive equation 、 Composite material 、 Ultimate tensile strength 、 Manganin 、 Digital image correlation 、 Elastic modulus 、 Strain rate 、 Split-Hopkinson pressure bar 、 Materials science
摘要: Polycarbonate (PC) is a widely used engineering material in aerospace field, since it has excellent mechanical and optical property. In present study, both compressive tensile tests of PC were conducted at high strain rates by using split Hopkinson pressure bar. The high-speed camera 2D Digital Image Correlation method (DIC) to analyze the dynamic deformation behavior PC. Meanwhile, plate impact experiment was carried out measure equation state single-stage gas gun, which consists asymmetric technology, manganin gauges, PVDF, electromagnetic particle velocity gauges. results indicate that yield stress increased with compression tension tests. same phenomenon similar elasticity modulus different rate. A constitutive model describe behaviors accurately contrast 2D-DIC. At last, D-u Hugoniot curv...
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