| Software TourAdvanced elements,
          materials and solversUnrivalled
          state-of-the-art linear and quadratic element libraries; advanced
          material models; linear, nonlinear and seismic isolator joint models;
          and direct, eigen and fast solver options allow all types of
          structural engineering problem to be modelled and solved as
          efficiently as possible. LUSAS
        high-performance element libraries include:
           
            
            Beams, plates
            and shells for ordinary reinforced concrete, prestressed concrete,
            steel and composite construction
            
            Solid
            elements for detailed modelling and studying local effects
            
            Elements for
            cabled stayed and suspension structures
            
            Joint
            elements for linear and nonlinear modelling
           
          Additional element information is given on
          the product specification page Advanced general
          materials 
            Isotropic models
              including plastic, creep, damage, shrinkage, viscous, two-phaseOrthotropic models
              including plastic, creep, damage, shrinkage, viscous, two-phaseAnisotropic and
              rigidity modelsTemperature
              dependent modelsConcrete models with
              opening and closing of cracks, concrete crushing, and strain
              softening based on fracture energy in 2D/3DConcrete creep
              including AASHTO LRD 7th Edition, CEB-FIP Model Code 1990,
              EN1992-1-1:2004 Eurocode 2, IRC:112-2011 and creep only for Chinese creep model
              code.Concrete heat of
              hydration modellingUser-defined models
              and others 
            All linear and nonlinear materials
          include temperature dependency Geotechnical material
          models 
            Constitutive soil
              models include Tresca, von Mises, Drucker Prager, Duncan-Chang, Mohr Coulomb,
              Modified Cam Clay, and others for use in all types of
              soil-structure interaction modellingVolumetric
              deformation soil model (includes consolidation) Joint material modelsJoint material
              models are used in conjunction with joint elements to fully define
              the properties for linear, nonlinear and seismic isolator joints 
            Linear joint models
              include those for spring stiffness only and for general joint
              properties having spring stiffness, mass, coefficient of linear
              expansion and damping factor. User-defined force/displacement and
              axial force dependent curves are supported.Nonlinear joint
              models include elasto-plastic uniform tension and compression with
              isotropic hardening, elasto-plastic general with isotropic
              hardening, smooth and frictional contact, nonlinear user-defined,
              matrix properties, and othersSeismic isolator
              joint models include viscous dampers (Kelvin and Four Parameter
              Solid), lead rubber bearings with plastic yield and biaxial
              hysteretic behaviour, friction pendulum system with pressure and
              velocity dependent friction coefficient and biaxial hysteretic
              behaviour, and others Solvers 
            Direct and eigen
              solvers are provided as a minimum in all software productsA Fast
          Solvers software option
              provides
              additional solvers for use with particular LUSAS Civil &
              Structural products Continue the tour... 
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