http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
A general tangent operator applied to concrete using a multi-surface plasticity model
Ana Beatriz C.G. Silva,Jose Claudio F. Telles,Eduardo M.R. Fairbairn,Fernando Luiz B. Ribeiro 사단법인 한국계산역학회 2015 Computers and Concrete, An International Journal Vol.16 No.2
The present paper aims at developing a method to accommodate multi-surface concrete plasticity from the point of view of a consistency concept applied to general tangent operators. The idea is based on a Taylor series expansion of the actual effective stress at the stress point corresponding to the previous accumulated true stresses plus the current increment values, initially taken to be elastic. The proposed algorithm can be generalized for any multi-surface criteria combination and has been tested here for typical cement-based materials. A few examples of application are presented to demonstrate the effectiveness of the multi-surface technique as used to a combination of Rankine and Drucker-Prager yield criteria.