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Abstract Mechanical vibration can effectively reduce the porosity and improve the packing density of titanium powder particles. Based on establishing the dynamic equation of particles contact process by discrete element method，numerical simulation of the titanium powder particle filling process was conducted using EDEM discrete element software，and the vibration state of titanium powder in different directions was analyzed. Results show that the filling density of titanium powder with single direction vibration is higher than that with two directions or three directions. The steady-state average packing density of[x]direction is 1.04 times and 1.06 times of[xy]and[xyz]directions，respectively. With the increase of vibration time，the filling density increases firstly and then turns stable. The optimum vibration time is 20 s. The simulation has certain reference significance for the actual production of titanium powder.
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Received: 13 June 2016
Published: 10 August 2017
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2017, Vol. 27 
