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Shear Strength of Timothy Grass Stem

Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan

Citation:  2010 Pittsburgh, Pennsylvania, June 20 - June 23, 2010  1009362.(doi:10.13031/2013.29861)
Authors:   Guanghui Wang, Decheng Wang, Lope G Tabil, Anthony Opoku
Keywords:   shear strength, biomass, size reduction, timothy

As a type of biomass, timothy grass (Phleum pretense L.) hay is a very popular feed for livestock. Size reduction a pre-processing step for it to be further utilized. To know the shear strength of its stem will help researchers design the proper equipment to process. In this study, a set of different moisture contents timothy grass hay were considered to be the experimental factors. And an experimental set was used to test the shear strength of timothy stem. Then the diameters of all the tested stems were measured. The result showed that the timothy stems shear strength is between 10.84 and 50.56 MPa. It was also found that the stem with lower cross-area has higher shear strength and higher moistures stem has higher shear strength. These results will be useful for lower energy consumption to process the timothy grass hay.

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