LUSAS Bridge

A feature-rich, bridge analysis system for all types of general analysis with beam, shell and solid elements.

Analysis capabilities

• Linear static stress analysis
• Linear buckling
• Natural frequency analysis
• Linear dynamics including forced response
• Interactive Model Dynamics
• Fatigue analysis
• Advanced Interactive Modal Dynamics analysis*
• Vehicle load optimisation*
• Fast Solving capability*

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

Comprises:

• All elements, material models, modelling, analysis and results processing capabilities included in LUSAS Bridge LT

And in addition:

• An advanced high-performance element library including:

• Bars
• Thick and thin beams
• Grillage
• Plane stress/strain continuum
• Axisymmetric solid continuum
• Solid continuum
• Plate flexure (thick + thin)
• Non-structural masses
• Flat thin membranes
• Flat thick + thin shells
• Axisymmetric membranes
• Axisymmetric thin shells
• Generalised joint/springs/gaps

• Advanced material models including:

• Isotropic including plastic, creep, damage, shrinkage, viscous, two-phase
• Orthotropic including plastic, creep, damage, shrinkage, viscous, two-phase
• Anisotropic and rigidity models
• Temperature dependency

• General 

• Multiple model and results viewing windows
• Multiple Treeframe capability
• Advanced LUSAS solver options
• Import / export of CAD, LUSAS, and other data formats
• Picture saving to BMP, JPG, WMF formats
• Selection memory facility
• Browse and cycle screen selections
• LUSAS Programmable Interface (LPI) command bar

• Geometry creation

• Point, line, surface and volume geometry creation
• Extended geometry construction options including splines, tangents, sweeping, intersecting, manifolding, merging etc.
• Option to merge coincident data
• Shape wizard
• Boolean geometry creation including intersections, unions, subtraction and slicing of model data
• Slice through geometry

• Attributes

• Point, line, surface and volume mesh creation
• Point mass and joint elements
• Standard steel section libraries for selected countries
• User-defined line, surface and joint geometric properties
• User-defined orthotropic, anisotropic, joint, rigidities, mass and specialised material properties
• Extended structural supports including hinge rotation and pore water pressure
• Extended structural loadings including face, stress and strain, initial velocity and acceleartion, prescribed velocity and acceleration
• Constraint equations
• Retained freedoms
• Damping
• Influence facility
• Search areas
• Design strength plotting facility

• Utilities

• Mesh lock facility
• Variation of attribute assignments over features
• Fatigue
• Interactive Modal Dynamics loadcase creation
• Design factor plotting
• Background meshing grid facility
• Slice sections through 3D models
• Slice resultants for beams and shells
• Automatic arbitrary section property calculator
• Precast concrete sections for selected countries

• Bridge specific features

• Grillage wizard
• Static vehicle, lane, and knife edge loading for selected country codes
• Moving load generator
• Pre-defined loading combinations for selected country codes
• Influence analysis capability
• Prestress / Post-tensioning wizard
• RC Design wizard for slab and wall reinforcement design

• Result processing

• Country-specific loading combination wizards
• Vehicle load optimisation interface
• Single and Multi tendon prestress / post-tensioning wizard
• RC slab / wall design wizard

LUSAS Bridge software options

The finite element analysis capabilities of LUSAS Bridge can be enhanced by using any of the following software options:-

Vehicle Load Optimisation (Autoloader)

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

Fast Multifrontal Solvers

• Fast Multifrontal Direct Solver
• Fast Multifrontal Block Lanczos Eigensolver

IMD Plus Analysis

• Multiple event assessment
• Linear dynamics effects

LUSAS Bridge upgrade options

• LUSAS Bridge plus - for nonlinear, dynamic and field/thermal analysis problems