LUSAS Civil & Structural plus

An extended structural analysis system which includes all of the elements, material models, modelling, analysis and results processing capabilities of LUSAS Civil & Structural and has additional advanced elements and increased analysis capabilities.

Analysis capabilities

• Linear static stress analysis
• Linear buckling
• Natural frequency analysis
• Linear dynamics including forced response
• Interactive Model Dynamics
• Fatigue analysis
• Nonlinear analysis *
• Dynamic analysis *
• Thermal / Field analysis *
• Heat of hydration analysis *
• Advanced Interactive Modal Dynamics*
• Rail track analysis*
• Vehicle load optimisation*
• Fast Solving capability*

* when used with the appropriate LUSAS Bridge plus option(s)]

Comprises:

• All modelling, elements and analysis capabilities included in LUSAS Civil & Structural

And in addition:

• An extended advanced high-performance element library

Including:

• Curved bars
• Curved thick + thin beams (including curved cable capability)
• Curved thin semiloof shells
• Curved thick + thin shells
• Curved solids (high order)
• Axisymmetric solid continuum with non-axisymmetric loading

• Specialised material models including:

• CEB-FIP Model code 1990
• Concrete creep Chinese code
• User-defined models and others

• Fast Iterative Solver Technology

• Fast iterative solver

• Attributes

• Specialised materials
• Slideline contact modelling
• Birth and death facility for staged construction analysis
• Age facility

• Utilities

• Variation of loading using load curves
• Fourier analysis

LUSAS Civil & Structural plus options

The finite element analysis capabilities of LUSAS Civil & Structural plus can be extended by using any of the following product options:-

Nonlinear Analysis

• Large displacement, large rotation and large strain geometric nonlinearities
• Material nonlinearity including plasticity, concrete, damage, volumetric, geotechnical, rubber, creep, temperature dependent, and user supplied models
• Incremental, iterative (MNR or NR), line search and arc length solution procedures
• Follower forces
• Slideline/slidesurface contact algorithms

Dynamic Analysis

• Spectral and forced response
• Modal or Rayleigh damping
• Transient dynamics
• Automatic time step selection
• Nonlinear dynamics
• Time dependent materials and loading

Thermal / Field Analysis

• Steady state and transient
• Linear, nonlinear and field dependent material models
• Automatic time steps
• Link, line, plane, axisymmetric and solid field elements

Heat of Hydration Analysis

• Models the heat of hydration of concrete for a variety of cement types. 
• Includes effects due to the addition of fly ash and ground granulated blast furnace slag

IMD Plus Analysis

• Multiple event assessment
• Linear dynamics effects

Rail Track Analysis

• Track/bridge interaction analysis to Union of Railways code UIC774-3
• Automatic building of models
• Calculates stresses and forces in track from thermal and train loading

Vehicle Load Optimisation (Autoloader)

• Rapidly reduces load assessment times
• Extends vehicle loading capabilities of LUSAS Civil & Structural
• Simplifies worst load case evaluation

Fast Multifrontal Solvers

• Fast Multifrontal Direct Solver
• Fast Multifrontal Block Lanczos Eigensolver