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To improve the mobility of locomotive devices on loose, sandy terrain, protrusions or convex patterns called lugs (i.e., grousers) are attached to the surface of a locomotive modulus. Following our previous study, in which the effects of angular speed, lug sinkage length, and soil cumulative deformation on lug-soil interaction forces during the fixed-axis rotational motion were experimentally confirmed,...
A thermodynamics-based damage mechanics rate dependent constitutive model is used to simulate experiments conducted on thin layer eutectic SnAgCu(SAC) solder joints. The non-damage constitutive is measured by bulk tensile test. The relationship between true stress and strain is sigma=85.26epsiv0.3536. Damage evolution equation is proposed based Lemaitre ductile damage theory and the constant in the...
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