DIC monitoring and simulation of deformation field during uniaxial compression of diabase
Diabase with its abundant reserves and extensive applications has been widely studied,and its mechanical properties and failure modes have a significant impact on the mining and utilization of diabase.This study focuses on standard diabase specimens,utilizing a universal testing machine and a three-dimensional full-field strain measurement system to acquire mechanical parameters during the uniaxial compression process.Digital Image Correlation(DIC)technology is employed to observe displacement and strain in the specimens during the testing process,and Particle Flow Code(PFC)software is used to construct a two-dimensional model based on the parameters tested,conducting uniaxial compression simulation experiments.The results indicate that the DIC technology can accurately reflect the displacement and strain fields during the compression fracture process of the specimens.However there is problem of unable to monitor once the particles fall off the specimen surface.By comparing DIC monitoring data with PFC simulation data,it is found that the crack initiation location and crack propagation path of the specimens have high consistency,but the measurement accuracy of the strain field is affected by parameters such as the measurement circle and layout method.The combination of DIC monitoring technology and numerical analysis technology can reveal the strain evolution rules in the specimen failure process more deeply,providing valuable references for studying the failure of specimens under external forces.
diabaseuniaxial compressiondigital image correlationnumerical analysisstrain field
万方数据
维普
