Abstract:The double-V-wings honeycomb (DVWH) structure was used to explore the damage mechanism undermining parameters of its cell structure on the logging woods to solve the problem of damage of timber caused by the logging woods during forest harvesting. Based on theoretical mechanics,a theoretical model of the unit cell parameters and yield strength of the DVWH structure was constructed,and the Y direction compression experiment was carried out to verify it. The effects of cell structure parameters on the equivalent stress and energy absorption changes of the structure under low-speed compression,and the coupling relationship between the finite element simulation of the feed roller cell structure parameters and the log contact area are investigated. Selecting polyurethane as the material for roller drive applications,the orthogonal test method was used to select the optimal parameters in the θ1,θ2,t interval to increase the contact area between the feeding roller and the log by 14.56%-26.11%. Results showed that the cell structure parameters can be selected and determined according to the requirements of specific working conditions. The structural parameter thickness t was an important index affecting the compaction strain of the DVWH structure with negative Poisson’s ratio. Changing the materials selected for the negative Poisson’s ratio structure and the size parameters of the DVWH negative Poisson’s ratio structure can improve the contact area between the feeding roller and the wood and reduce the pressure on the log.