PLAXIS 2D is a finite element package intended for the two dimensional analysis of deformation and stability in geotechnical engineering. It is equipped with features to deal with various aspects of geotechnical structures and construction processes using robust and theoretically sound computational procedures.

With PLAXIS 2D the geometry of the model can be easily defined in the soil and structures modes, after which independent solid models can automatically be intersected and meshed. The staged construction mode allows for simulation of construction and excavation processes by activating and deactivating soil clusters and structural objects. The calculation kernel enables a realistic simulation of the non linear, time dependent and anisotropic behaviour of soils and/or rock. Since soil is a multi phase material, special procedures allow for calculations dealing with hydrostatic and non hydrostatic pore pressures in the soil. The output consists of a full suite of visualization tools to check the details of the 2D underground soil-structure model. Typical PLAXIS applications include: assessing street level displacements during the tunnel construction, consolidation analysis of embankments, soil displacements around an excavation pit, dam stability during different water levels, and much more. PLAXIS 2D is a user friendly geotechnical program offering flexible and interoperable geometry, realistic simulation of construction stages, a robust and reliable calculation kernel, and comprehensive and detailed post-processing, making it a complete solution for your daily geotechnical design and analysis. Product features: New and improved features in PLAXIS 2D 2015: UDSM for Shotcrete to model tunnel lining (VIP, upon request) + Non-linear elastoplastic behaviour for plate elements (Specify M-kappa diagrams) + Option to apply strength reduction only to selected clusters. + Option to apply strength reduction to selected structural elements. + Vacuum behaviour for drains to model vacuum consolidation + New implementation of Sensitivity analysis and Parameter variation (VIP) + Command line support to query results in Output + Commands Runner available in Output (VIP) + Remote Scripting API with Python wrapper for Output (VIP) + Added an array tool for easily creating copies + Embedded beam row improvements: Linear & multi-linear lateral skin resistance + Multi-linear and layer dependent axial skin resistance + Elastoplastic behaviour +  Improved visualization for 'Rockbolt' and 'Pile' behaviour. + Define Biot alpha coefficient for material models + Flexible default fixities with possibility to specify per model boundary.

Modelling: Logical geotechnical workflow + Easy-to-use graphical user interface + Command Line and Commands Runner (VIP) + Remote Scripting API for Input with Python wrapper (VIP) + Borehole wizard for soil modelling + Import and interpret soil measurement data to generate + Soil Stratigraphy from CPT Logs (VIP) + Structural elements; plates, geogrids and anchors, embedded pile row + Hinges and rotation springs + Unlimited combinations of point forces and distributed loads + Model and Selection Explorer, offering direct access to all objects + Multi object selecting and editing + Tunnel Designer, with CAD Import Option + CAD import facilities (VIP) + SoilTest + Inverse analysis of material parameters (parametric optimization) + Design Approaches (Eurocode 7, LRFD etc.). Material Models: Linear Elastic + Mohr-Coulomb + Hardening Soil + HS Small strain stiffness + Soft soil + Soft Soil creep + Jointed Rock + Modified Cam Clay + NGI-ADP (VIP) + Hoek-Brown (VIP) + Sekiguchi-Ohta, Viscid & Inviscid (VIP) + User Defined Soil Models (VIP). Calculations: Convenient and intuitive Phase explorer + Distinguish between a Plastic calculation, consolidation-, and safety analysis + Automatic regeneration of construction stages + Well-proven and robust calculation procedures + 64-bit Calculation Kernel (VIP) + Multicore computing (VIP) + Facilities for steady-state groundwater flow calculations, including flow-related material parameters, boundary conditions, drains and wells. Results: Realistic assessment of stresses and displacements + Contour, shading, iso-surface and vectors plots + Extensive report and movie Generator + Structural forces in Volumes (Tunnel lining, retaining wall) + Plot Annotations + Curve Manager + Hint Boxes + Resulting Force View + Preview Calculation results + Animations (creation of AVI files)

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