LNG Tank Analysis and Design System

The 'LUSAS LNG Tank Analysis and Design System'   is a licensed software product that allows engineers to automatically create a range of 2D and 3D finite element models of full containment circular tanks from user-defined parameters. Using these models, a range of analyses can be performed, and optional design checks carried out for specified load combinations and supported design codes.

Steel Frame Design

The Steel Frame Design software option has been extended to include design checks for BS5400-3:2000

Concrete Creep and Shrinkage

• The range of concrete creep and shrinkage material models has been extended to include those for Chinese code JTG 3362-2018 and fib Model Code 2010.
• For Codes of Practice that include suitable clauses, material properties and creep/shrinkage behaviours can be adjusted according to a prevailing temperature during the service life of the structure. This includes CEB-FIP Model Code 1990, fib Model Code 2010, and JTG 3362-2018.
• The age of structural elements at the time of their activation can now be calculated with adjustment for temperature during curing.

Prestress

• Time dependent prestress capabilities have been extended to include those for Chinese code JTG 3362-2018 and fib Model Code 2010.

Vehicle Load Optimisation

• The Vehicle Load Optimisation facility has been extended to support more bridge assessment codes and now includes optimised loading and custom vehicles for United States of America AASHTO MBE Section 6A (LRFR) and United Kingdom CS 458 rev 0 with ALL Model 1.

RC Frame Design

• RC Frame design now allows the direction of the neutral axis to be defined for uniaxial bending as part of defining the RC design attributes for all supported design codes.

Design combinations

• The Design combinations facility, which assigns LUSAS loadcases, envelopes or basic combinations to predefined load types for a supported design code), now supports CS 454, IRC: 6-2017, EN1990 for Railway Bridges and Footbridges - for Recommended Values and Irish, and UK National Annexes, and EN1990 for Highways Bridges and Footbridges for the Italian National Annex.
• The design combinations implementation for Highway Bridges for EN1990 for Recommended Values, Irish, and UK National Annexes has been extended to include 'Persistent Combination Set C'.

Cursor-based box selections

• A right-to-left definition of box extents can be optionally set to select all features crossed by the selection box (as often used by CAD software), rather than include only those items wholly inside the selection box. 

Thick beam warping

• For thick beams that support warping, torsional end conditions can now be defined.

LUSAS Teaching and Training version limits increased

• The Teaching and Training version of LUSAS, which restricts the size of model that can be solved, now has the following increased limits:
  

File export

• Export of LUSAS model data to a Visual Basic Script file is now provided.

Improved exporting of results data for use by the Composite Deck Designer (PontiEC4)

• Exporting of results can now be used with 2D grillage or 3D analysis models made from beams, shells, or a combination of those element types.
• Composite Design Member details are now used when exporting force and moment results data for use in carrying out design checks by the Composite Deck Designer (PontiEC4) software option. As a consequence, beam/shell slice resultants can now also be exported.

For more information see Composite Bridge Deck Design (PontiEC4)

Associated model data

• The 'Associated Model Data' folder, that holds files created in the course of a building a model and running an analysis, is now named 'LusasFiles32' for a 32-bit installation.
• The previous ability to specify alternative locations of files that are created in the course of building a model and running the various analyses associated with it, as specified via the LUSAS configuration utility, has been removed.

Restricted 64-bit LUSAS Modeller (Beta)

• Version 19.1 offers a new restricted 64-bit beta version of Modeller that should only be used if advised to do so by LUSAS Technical Support. Users are recommended to keep using 32-bit Modeller as geometry cannot be edited in this beta version.