Transactions of Nonferrous Metals Society of China The Chinese Journal of Nonferrous Metals

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Transactions of Nonferrous Metals Society of China

Vol. 28    No. 6    June 2018

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Turning traction force of tracked mining vehicle based on rheological property of deep-sea sediment
Feng XU1, Qiu-hua RAO1, Wen-bo MA2

1. School of Civil Engineering, Central South University, Changsha 410075, China;
2. College of Civil Engineering and Mechanics, Xiangtan University, Xiangtan 411100, China

Abstract:Based on main physical and mechanical properties of deep-sea sediment from C-C poly-metallic nodule mining area in the Pacific Ocean, the best sediment simulant was successfully prepared by mixing bentonite with a certain content of water. Compression-shear coupling rheological constitutive model of the sediment simulant was established by endochronic theory and the coupling rheological parameters were obtained by compressive and compression-shear creep tests. A new calculation formula of turning traction force of the tracked mining vehicle was first derived based on the coupling rheological model and consideration of pushing resistance and sinkage of the tracked mining vehicle. Effects of the turning velocity, crawler spacing and contacting length of crawler with deep-sea sediment on the turning traction force were analyzed. Research results can provide theoretical foundation for operation safety and optimal design of the tracked mining vehicle.


Key words: turning traction force; compression-shear coupling rheology; deep-sea sediment; tracked mining vehicle

ISSN 1004-0609
CN 43-1238/TG

ISSN 1003-6326
CN 43-1239/TG

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