Abstract: In order to explore the response about the impact of impacting parameters changing on
soybean seed stress distribution and deforming displacement, the simulation analysis of the impacting
processing between soybean and contacting plane has been done by using SolidWorks Simulation and
obtained soybean models stress distribution and deforming displacement with times changing in
soybean impacting processing, the impacting velocity and contact radius were selected as factors and
the model stress maximum and the displacement maximum were selected as indexes, using orthogonal
testing method to analyze factors affecting indexes. The test results indicate that two factors have
significant influence on the model stress maximum, for index displacement, contact radius was
significant, impact velocity was notable. Meanwhile, two indexes increased with impact velocitys
increasing, but when contact radius increased, the indexes first decreased and then decreasing trend
become slowing. At last, the results of the research provided a reference for soybean seed threshers
simulation design and product research and development.

Key words: orthogonal test, soybean seed, SolidWorks Simulation, impacting simulation, stress and
displacement