Various heterogeneous brittle aggregate materials such as concretes, rocks, or sea ice, are inelastic but cannot be described as plastic, except at extremely high hydrostatic pressures. A characteristic property of such materials is that they exhibit strain-softening, i. e. , a decline of stress at increasing strain, which results from progressive development of fracture. Since these materials can undergo strain-softening within a relatively large zone, a non-linear triaxial constitutive relation is needed for its description. There are, however, some important differences from the classical modelling of inelastic behaviour, i. e. , from the theory of plasticity. In the present work, it is proposed to describe this behaviour independently on planes of various orientations in the material, called microplanes, and then in a certain way superimpose the inelastic effects from all the planes.
|Original language||English (US)|
|Title of host publication||Unknown Host Publication Title|
|Editors||Chandrakant S. Desai, R.H. Gallagher|
|Publisher||John Wiley & Sons|
|Number of pages||15|
|State||Published - Dec 1 1984|
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