2010, Volume 12, Issue 8
Strategic Study of CAE >> 2010, Volume 12, Issue 8
The study of slip line field and upper bound method based on the non-associated flow rule
1. Logistical Engineering University, Chongqing 400041,China;
2. No.6 Air Defense Engineering Department of PLA Air Force, Hengyang, Hunan 421001, China
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Abstract
The slip line field theory and the upper bound method based on the associated flow rule for the traditional plastic theory don't accord with the experiment for geotechnical material ,so the non-associated flow rule must be applied to geotechnical material which indicates the stress characteristic line don't coincide with the velocity line. In this paper some problems existing in the slip line field theory and the upper bound method based on the associated flow rule were analyzed. The slip line field theory and the upper bound method based on the non-associated flow rule were deduced according to the generalized plastic theory , which eliminated some inconsistencies in the slip line field theory and the upper bound method based on the associated flow rule for the traditional plastic theory.
Keywords
slip line field ; upper bound method ; associated flow rule ; non-associated flow rule ; generalized plastic theory
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