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Online since: November 2012
Authors: Wei Dong Huang, Jin Song Bao, You Sheng Xu
Fig. 1 Forces exerted on the rover as it Fig. 2 A wheel-soil interaction model for
travels down the slope down-slope travel of a lunar rover
Based on Bekker's pressure-sinkage relationship, and the Wong-Reece model, as modified by Ishigami[8], and using Janosi's model for elastic soil shear stresses and the force formula modified by Iagnemma [9], we have:
(3)
(4)
where,
Based on the Bekker model, the static wheel sinkage z can be calculated as:
(5)
where, W is the wheel load, , r is the wheel radius, b is the wheel width, kc and kφ are the cohesive and friction soil moduli, respectively, n is the sinkage exponent, whose value is typically set to 1.
Vol.4 (2008) , p. 930-935
Vol. 312(2008) , p. 380-398.
Vol.4 (2008) , p. 930-935
Vol. 312(2008) , p. 380-398.
Online since: August 2024
Authors: P.L. Ng, Albert T. Yeung
The admixtures were complying with British Standard BS 5075-1: 1982 and BS 5075-3: 1985 and European Standard EN 934-1: 2008 and EN 934-5: 2007.
Wong, Decompression sickness in the Singapore Mass Rapid Transit project, Singapore Med.
-Japan Panel on Aerospace, Diving Physiology & Technology and Hyperbaric Medicine, Nakatsu, Japan, 2008, 126-131
Wong, Decompression sickness in the Singapore Mass Rapid Transit project, Singapore Med.
-Japan Panel on Aerospace, Diving Physiology & Technology and Hyperbaric Medicine, Nakatsu, Japan, 2008, 126-131
Online since: February 2015
Authors: Lilla Nádai, Bálint Katona, Eszter Bognár
Muller, Relationship between surface properties (roughness,wettability and morphology) of titanium and dental implant removal torque, Journal of the Mechanical Behavior of Biomedical Materials 1 (2008) 234-242
Wong, J.
Weidmann, Struers Application Notes: Metallographic preparation of titanium (2008)
Wong, J.
Weidmann, Struers Application Notes: Metallographic preparation of titanium (2008)