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Experimental and Numerical Analysis of the Biomechanical

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Experimental and Numerical Analysis of the Biomechanical Powered By Docstoc
					Poster presentation 1A-19

Experimental and Numerical Analysis of the Biomechanical Characteristics of Agricultural Crop Residues
Christopher T. Wright*, Peter A. Pryfogle, Richard L. Williamson, Nathan A. Stevens, David Gallup, J. Richard Hess, Eric D. Steffler Idaho National Engineering and Environmental Laboratory, Idaho Falls, ID 83415-2210 Phone: (208) 526-3075 email: wrigct@inel.gov The lack of understanding of the biomechanical properties and structural characteristics of cellulosic feedstocks is a limiting factor in economically collecting and processing crop residues. To address this issue, a numerical analysis of the biomechanical and structural behavior of crop residues was performed using finite element analysis techniques and applying composite theory. Representative geometries of the specific structural components including the hypoderm, ground tissue and vascular bundles, were established using microscopy techniques. Material property data for the analysis was obtained from experimentally measured data. Numerical results from different mechanical loading models were compared with the respective experimental data. Results of this comparison help establish the validity of the models and provide a basis for applying their results to the mechanical operations of harvesting and preprocessing equipment. A thorough understanding of the biomechanical and structural behavior of crop residues can help optimizing plant varieties and develop more energy efficient harvesting practices.


				
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