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Analysis Capability

LUSAS Civil & Structural will comfortably meet your everyday analysis needs. the unrivalled state-of-the-art element libraries, isotropic and orthotropic material models, together with direct and eigen solvers, allow all types of civil and structural engineering problem to be solved. Analysis capability is dependent upon the product in use. For details see the Product Specification.

Slab analysisLinear Static Analysis

  • Stresses, strains, displacements, moments, shears and axial forces that result from static loading are easily calculated. Loads are assumed to be applied instantaneously in order to develop the state of internal stress and transient effects are ignored.

Buckling analysisLinear Buckling Analysis

  • For relatively ‘stiff’ structures such as plate girders, diaphragms and U frames the maximum load that can be supported prior to structural instability or collapse occuring can be readily obtained.

Natural Frequency Analysis

  • Natural frequencies and structural mode shapes from wind, fluctuating loads and other induced loadings can be determined.

Linear Dynamics / Interactive Modal Dynamics (IMD)

  • The IMD facility provides a way of rigorously analysing the linear dynamic response of a large number of transient loads such as seismic events, without the long analysis solution times associated with traditional time domain analysis.
  • Forces, moments, displacements, response time histories, and peak response summaries, both for the whole structure and at selected nodes or elements, can be obtained.
  • Results can be graphed, and contour, vector, or peak value feature plots can be produced.

Concrete Silo - Out of plane shear in wallFatigue Analysis

  • The fatigue response of a structure or structural component can be evaluated in accordance with all major design codes. More details.

Pre-stress and Post Tensioning

  • A multi-tendon pre-stress post-tensioning facility enables the forces equivalent to a prestress tendon to be automatically computed and applied to a model in any orientation.
  • Losses due to wobble, friction, anchorage slip, creep, shrinkage and relaxation are all accounted for.

Advanced Analysis Capabilities >

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Any modelling and analysis capabilities described on this page are dependent upon the LUSAS software product and version in use.

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