MATHEMATICALLY CONSISTENT FORMULATION OF ELASTOPLASTIC CONSTITUTIVE EQUATIONS. PROCEEDINGS OF THE SIXTH INTERNATIONAL CONFERENCE ON NUMERICAL METHODS IN GEOMECHANICS, 11-15 APRIL 1988, INNSBRUCK, AUSTRIA. VOLUMES 1 - 3
MATHEMATICALLY CONSISTENT FORMULATION OF ELASTOPLASTIC CONSTITUTIVE EQUATIONS. PROCEEDINGS OF THE SIXTH INTERNATIONAL CONFERENCE ON NUMERICAL METHODS IN GEOMECHANICS, 11-15 APRIL 1988, INNSBRUCK, AUSTRIA. VOLUMES 1 - 3
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弹塑性本构方程的数学一致公式。
DOI：
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发表时间：
1988
期刊：
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通讯作者：
K. Hashiguchi
中科院分区：
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作者：
K. Hashiguchi
作者提出的原始次加载面模型（或Dafalias提出的径向映射边界面模型）没有假定屈服面为纯弹性区域，而是假定次加载面即使在卸载状态下也总是通过当前应力点。因此，它描述了一个连续的应力率-塑性应变率关系（光滑的弹塑性过渡），其加载准则不需要判断当前应力是否位于屈服面。然而，它不能很好地描述诱导各向异性和滞后效应，因为正常屈服或子加载表面的相似中心是固定的或没有适当地制定。最近，作者提出了次加载面模型的数学精确公式。本文将这种扩展的次加载面模型应用于散体材料，并与砂土的试验数据进行了比较。（TRRL）
The original subloading surface model proposed by the author (or the bounding surface model with a radial mapping by Dafalias) does not assume a yield surface enclosing a purely elastic domain, and instead it assumes a subloading surface which always passes through a current stress point even in the unloading state. Thus, it describes a continuous stress rate-plastic strain rate relation (smooth elastic-plastic transition) and its loading criterion does not require the judgement whether a current stress lies on a yield surface or not. However, it can not describe an induced anisotropy and a hysteresis effect very well, since the center of similarity of the normal yield or the subloading surfaces is fixed or is not formulated adequately. Recently, the author presented the mathematically exact formulation of the subloading surface model. In this paper, this extended subloading surface model is applied to granular materials, and it is compared with some test data of sand. (TRRL)