This is a computing package developed by Ove Arup Partnership to cover major aspects of structural and geotechnical engineering: Calculations on realistically sized 3D models in geotechnical engineering problems can be made in a reasonable time period. FLAC3D is designed specifically to operate on IBM-compatible microcomputers. In addition, FLAC contains many special features such as interface elements, groundwater and consolidation models, structural elements, dynamic and visco-elastic (creep) analysis capabilities.įLAC Version 3.3 also contains the powerful built-in programming language FISH with which the users can write their own functions to extend FLAC's usefulness and even implement their own constitutive models.įLAC3D Version 1.1 is a three-dimensional programme which extends the analysis capability of FLAC into three dimensions. Several built-in constitutive models are available that permit the simulation of highly non-linear, irreversible response representative of geologic, or similar materials.
Because no matrices are formed, large two-dimensional calculations can be made without excessive memory requirements. The explicit, Lanrangian calculation scheme and the mix-discretization zoning technique used in FLAC ensure that plastic collapse and flow are modelled accurately. The material can yield and flow, and the grid can deform in small and large-strain mode and move with the material that is represented. Each element behaves according to a prescribed linear or non-linear stress/strain law in response to the applied forces or boundary restraints. Materials are represented by elements, or zones, which form a grid that is adjusted by the user to fit the shape of the object to be modelled. The two programmes simulate the behaviour of soils, structures built on soil, rock or other materials that may undergone plastic flow when their yield limits are reached. FLAC Version 3.3 is a two-dimensional explicit finite difference program for solving mining and geotechnical engineering problems.
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