Engineering analysis and design software
General engineering analysis

Software Specification

LUSAS Analyst plus

An extended, feature-rich engineering analysis system for more advanced analysis consisting of:

  • All the features and elements of LUSAS Analyst
  • Extended advanced high-performance element library including:
  • Implicit elements - curved bars, curved thick + thin beams, curved thin semiloof shells, curved thick shells, curved solids (high order), axisymmetric solid continuum with non-axisymmetric loading
  • Explicit elements - plane stress/strain continuum, solid continuum
  • Fast Iterative Solver Technology

For all types of linear static stress, nonlinear, dynamic and thermal analysis problems when used with the appropriate LUSAS Analyst plus option.


LUSAS Analyst plus Options

The finite element analysis capabilities of LUSAS Analyst plus can be extended by purchasing and using any of the following software options:-

Nonlinear Analysis

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

Dynamic Analysis

  • Spectral and Forced Response
  • Modal or Rayleigh Damping
  • Modal synthesis
  • Transient Dynamics (Implicit and Explicit)
  • Automatic time step selection
  • Nonlinear Dynamics
  • Time dependant materials and loading

Thermal Analysis

  • Conduction/convection/radiation
  • Steady state and transient
  • Linear, nonlinear, and temperature dependant material models
  • Automatic time steps
  • Diffuse radiation using view factors
  • Full or semi thermal/mechanical coupling
  • Convection and nonlinear radiation boundary conditions

Fast Multifrontal Solvers

  • Fast Multifrontal Direct Solver
  • Fast Multifrontal Block Lanczos Eigensolver

Find out more

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Software Information


LUSAS is a trademark and trading name of Finite Element Analysis Ltd. 
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Any modelling and analysis capabilities described on this page are dependent upon the LUSAS software product and version in use.