The American Society of Agricultural and Biological Engineers is an educational and scientific organization dedicated to the advancement of engineering applicable to agricultural, food, and biological systems. Founded in 1907 and headquartered in St. Joseph, Michigan, ASABE comprises members in more than 100 countries.

Homepage: https://www.asabe.org

ASABE membership is open to all (engineers as well as non-engineers) who are interested in engineering and technology for agricultural, food, and biological systems. With membership comes access to the ASABE Technical Library which includes access to PDFs of papers from meetings and ASABE Journals, the "Distinguished Lecture Series", and a range of textbooks related to soil mechanics and terramechanics including:

Soil Dynamics in Tillage and Traction (1968), Agriculture Handbook No. 316, William R. Gill and Glen E. Vanden Berg

And the follow up volumes

Soil Dynamics, Vol. 1 (1994), Vol. 2 (2002), Vol.3 (2009)

These are detailed reference books for soil mechanics and terramechanics

The CD of companion files for Vol 3 is available for free download at:

**https://elibrary.asabe.org/monographs.asp?confid=sd2009**

The files contain Excel Spreadsheet models of force prediction for cutting by tines, discs and mouldboard plough bodies, and a land anchor model. PDFs of journal papers by Professor R J Godwin and his colleagues, that are linked to the Excel models, are adjacent to each downloadable Excel file.