Numerical Simulation of Shredding Process of Wakame Stalk Based on LS-DYNA Software
To improve the shredding efficiency of wakame stalk and ensure the processing quality,the theory of the shred-ding process was analyzed,the disc shear model of wakame stalk was established,and the finite element software LS-DYNA was used to simulate the shredding process.The influences of overlap width,tool gap and shear speed on peak shear force,unit area shearing energy and shear effect were explored through single factor simulation experiments,and a shredding test bench was built to carry out shredding tests at different shear speeds.The results show that the peak shear force and unit area shearing energy decrease with the increase of overlap width and shear speed,and increase and decrease first and then increase with the increase of tool gap,respectively.The peak shear force of simulation at different overlap width is close to the theoretical calculation value,which verifies the rationality of the disc shear model.The shredding tests show that the stick and burr phenomena between the shredded wakame stalk at different shear speeds are basically consistent with the simulation results,which verifies the reliability of the simulation results of the shredding process.
wakame stalkshreddingfinite element simulationdisc shear model
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