Software Specification

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 allowing increased analysis capabilities.

Analysis capabilities

• Linear static stress analysis
• Linear buckling
• Natural frequency analysis
• Linear dynamics including forced response
• Interactive Model Dynamics
• Fatigue analysis
• Linear cable tuning analysis

Includes this software option for new orders:

• Fast solvers

And when used with these purchased software options also allows:

• Steel frame design
• RC frame design

• Advanced Interactive Modal Dynamics (IMD Plus)

• Nonlinear analysis

• Dynamic analysis

• Thermal / Field analysis

• Heat of hydration analysis

• Geotechnical / Soil-structure interaction analysis*

* when used with the appropriate software option(s).

See below for more details.

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

• Hygro-thermal 

• Phreatic surface

• Non-structural masses

• Interface

• Two-phase

• 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
• Activation and deactivation facility for staged construction analysis
• Age facility

• Utilities

• Variation of loading using load curves
• Fourier analysis

LUSAS Civil & Structural plus software options

Included for new orders:

Fast Solvers

• Fast Multifrontal Direct Solver
• Fast Multifrontal Block Lanczos Eigensolver
• Complex Eigensolver
• Fast Parallel Direct Solver
• Fast Parallel Iterative Solver

Available for purchase to increase the analysis and design capabilities of LUSAS Civil & Structural plus:

Steel Frame Design

• Design code-based results visualised as Utilisation ratios on members
• Design summary results produced for selected members and loadcases
• Generate formatted design reports, showing calculations made and referencing clauses and equations from chosen code

RC Frame Design

• Design checking of regular and arbitrary shaped reinforced concrete members subject to bending and axial force
• Design code-based results visualised as Utilisation ratios on members
• Produce a tabular summary of results for selected members and loadcases, view detailed results and generate interaction diagrams

IMDplus Analysis

• Multiple event assessment
• Linear dynamics effects

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
• Permits hygro-thermal analysis to determine time- and age-dependent deformations, stresses, crack-widths and more.

Composite FRP

• For structural and bridge applications, modelling of Fibre Reinforced Polymer (FRP), laminated glass, reinforced concrete using the smeared reinforcement technique, and gradual through-thickness masonry arch cracking assessments can be carried out using advanced layered shell elements.

LUSAS Civil & Structural plus product options

The finite element analysis capabilities of LUSAS Civil & Structural plus can be extended by purchasing the following software product:

LUSAS Bridge plus

• Bridge engineering analysis software with for linear static, fundamental frequency, seismic, dynamic, large deflection, staged construction, creep, prestress, post tensioning and fatigue analysis, rail track - structure interaction, and steel / composite deck design.

LUSAS Civil & Structural software selection

• Continue to Examples of LUSAS Civil & Structural software product - software option capabilities

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