USDA Subsurface Banding Implement Soil Trencher Improvements Critical Design Review Corp 10 Fall 2010 Christina Locklear Alex Peterson Alex Scammell Patrick Smyth Matt Turberville Outline Mission Objective Architectural Design Bill of Materials Comprehensive Analysis Questions The Trencher Direction of travel Way Thomas et al Applicator System and Method for the Agricultural Distribution of Biodegradable and Non Biodegradable Materials Patent 7 721 662 B2 25 May 2010 Mission Objective Litter Application Component To improve or redesign the walls of the poultry litter implement so that litter can be more effectively distributed to the soil mitigating the clogging that currently occurs during normal operation Dirt Recovery Component To improve or replace the current press wheel system used on the implement for dirt recovery so that the extricated soil is more effectively replaced over the deposited litter band Architectural Design Final Concept Architectural Design Trencher Wall Architectural Design Soil Recovery Device Bill of Materials Trencher Wall Parts Labor 38 40 70 00 Soil Recovery Device Parts 54 06 Labor 140 00 Grand Total 302 46 Comprehensive Analysis Trencher Wall Pressure Measurement Trencher Wall ANSYS Analysis Dirt Recovery Mechanism Analysis Trencher Wall Pressure Analysis Trencher Wall http content honeywell com sensing sensotec pdf catalog08 008602 1 EN Model F pdf Trencher Wall Pressure Analysis Oktibbeha Clay Soil First Run PASS1 ASC Data collected 11 5 2010 45 40 Pressure psi 35 30 P1 Front 25 P2 2nd 20 P3 3rd 15 P4 Rear 10 5 0 5 10 752 753 754 755 756 757 758 759 760 Time s 4 3 2 1 761 762 763 764 765 Trencher Wall ANSYS Analysis Mesh Brick 8Node45 Tetrahedral Boundary Conditions Structural Displacement Pressure on Bent Area Pressure 15 and 30 psi Trencher Wall ANSYS Analysis Results 15 psi 0 091 in deflection 30 psi 0 202 in deflection Preliminary Analysis Dirt Recovery Mechanism FBD Analysis Component TRENCHER WALL Fx max Fy 0 MCB 0 FT2 F21 1 2 R Use MATLAB to solve force equations and find shear stress on pivots FG FF FW F12 FB Conclusions Redesigned Trencher Walls Increase thickness to inch flare outward at 10 degrees As proven by ANSYS deflection will not inhibit poultry litter flow Soil Recovery Component Maximum shear in pivots is 14 lbs Materials chosen are sufficiently strong for intended application Questions
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