Stress Analysis: bucket teeth face with the excavated material, different process stage with different force. When the the tooth point First contact with the surface of the material, the faster bucket tooth in part by the strong impact. Tooth yield strength is low, it will be plastically deformed at the tip. With the increase digging depth, bucket teeth to force the situation will change.
Relative motion occurs when cutting materials bucket teeth, bucket teeth and materials, great squeeze pressure at the surface, and thus produce greater friction between the face and material bucket teeth. If the material is harder rock blocks, concrete, friction will be great. The results of this process is repeated the role in fighting tooth face produce different degrees of surface wear, and produce greater depth of the furrows.
Face positive pressure was significantly greater than the face, the front face serious wear and tear, can be judged positive pressure and friction is fighting tooth failure external mechanical factors play a major role in the failure process
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