Dynamic characteristics and constitutive model of carbonaceous slate consider-ing strain rate and bedding inclination angle
To investigate the effect of strain rate and bedding inclination on the dynamic mechanical properties of carbonaceous slate and establish its constitutive model,this study conducted dynamic compression tests on carbonaceous slate specimens of different strain rates and bedding inclination using a Hopkinson pressure bar test system,and analyzed their stress-strain curves and failure modes.Based on the Zhu-Wang-Tang model,this study established a dynamic damage constitutive model suitable for carbonaceous slate by considering the influence of bedding inclination,strain rate,and rock damage,and fitted the experimental data using the constitutive model.The results showed that with the increase of strain rate,the dynamic peak strength and peak strain of the sample increased.With the increase of bedding inclination,the peak strength of the sample showed a trend of first decreasing and then increasing,and the peak strain first increased and then decreased.The fitting curve of the constitutive model showed good consistency with the experimental curve.
万方数据
维普
