Strand7’s fully integrated visual environment, combined with a suite of powerful solvers gives you unparalleled functionality in a single application. The interactive interface allows easy construction of models, performing of detailed analyses and investigation of results. The range of elements and materials supported, combined with dynamic and nonlinear functionality make Strand7 eminently suitable for aeronautical, structural, marine, mechanical and mining engineers alike.

Base Package
The Base Package includes a graphical user interface for creating, editing and manipulating finite element models, along with the results for reporting and visualization tools for pre and post processing. Strand7 includes a great degree of solver capabilities including linear, static, dynamic and time history, while also encompassing seismic analysis, spectral and harmonic response and both steady state and transient heat transfer. Strand7 also supports IGES, STEP, STL, DXF, NASTRAN and ANSYS imports and exports, and STAADPro, SAP2000 and SAT imports.
The Automesher module offers automatic mesh generation from imported CAD files. Strand7 supports IGES, STEP and ACIS file formats. The automatic mesher creates surface (plate) meshes and solid (tetrahedral brick) meshes. For importing and exporting framework models to and from CAD, Strand7 supports import and export of DXF wireframe files. Features include:

  • Geometry Cleaning
  • Repair and Defeaturing 2D and 3D Plate Surface Mesher
  • 3D Tetrahedral Solid Mesher
The Nonlinear module extends the static and dynamic (time history) solvers into the nonlinear regime. It considers material, geometry and contact nonlinearity. A range of nonlinear functionality is available as follows: Nonlinear static solver including sequencing analysis Nonlinear quasi-static solver Nonlinear transient dynamic solver Material nonlinearity Geometry nonlinearity Contact nonlinearity Creep Construction.
Sparse Solver
The Sparse Solver module is designed to speed up the solution of large finite element models; compared with the standard solver. It can produce results in significantly less time (please see the Strand7 website for comparisons between the solvers). The Direct Sparse Solution is used on all solvers for the fast solution of large models, whilst the iterative (PCG) solution is used on all static solvers.

Model Properties
807 357 Nodes
1 102 Beams
815 904 Plates

Composite modules are used for the analysis of laminated composites defined as a stack of plies. It models and analyses composite behaviour of plates and shells using the Classical Laminate Theory. Typical applications include carbon fibre type composites as used in aerospace and automotive applications. The post processing includes results evaluation for ply stresses, strains and reserve factors. Features include:

  • A laminated composites database
  • A laminated composites pre-processor
  • A laminated composites post-processor
Moving Loads
Moving Loads is a module which includes a Load Influence solver together with the ability to define load paths anywhere on the model. The load paths can then be used to optimise the location of vehicle loads on a structure (e.g. a bridge), in accordance with a number of standards such as AASHTO LRFD, AS5100, BS5400 and EN 19912.

Features include:

  • A load influence solver
  • A load path template pre-processor including templates for AASHTO LRFD, AS 5100, BS 5400, EN 19912
  • Load path optimization
  • Load case generator
Reinforced Concrete
The Reinforced concrete module is used to calculate the amount of steel reinforcement required on plate/shell elements representing concrete slabs due to the actions of membrane forces and bending moments. The module is sufficiently flexible to address the requirements of most national codes such as AS 3600 and EC2.

Features include:

  • Concrete Slab Reinforcement definition for Plates and Shells
  • Reinforcement Calculations
  • Checking and Reporting
Application Program Interface Module (API)
The API module provides a programming interface to the Strand7 environment. It can be used to develop customised analysis applications through a programming language, bypassing the Strand7 graphical interface. It supports most programming languages, such as C, C++ , C#, Pascal, Delphi, Fortran, VB, etc. It can also be used from environments such as Microsoft Excel and Matlab. The API supports:

  • Creation and modification of Strand7 models
  • Execution of the solvers
  • Extraction of results
  • Manipulation of the display window
  • Generation of graphics and image files
Strand7 supports a wide range of elements and materials, which can be defined at any time, or extracted from a user-configurable materials library. The stress vs strain; force vs displacement; moment vs curvature and moment vs rotation tables can also be easily defined. The materials supported in Strand7 includes:

  • Isotropic
  • Orthotropic
  • Anisotropic
  • Laminate Rubber
  • Soil
  • User-defined

The range of elements include:

  • Beam Elements:
    • Standard Beams
    • Trusses
    • Cutoff bars
    • Point contacts
    • Springs and dampers
    • Cables Connections
    • User-defined beams
  • Plate Elements:
    • Triangular (3 or6 nodes)
    • Quadrilateral (4, 8 or 9 nodes)
    • 2D plane stress
    • 2D plane strain
    • Axisymmetric Plate/shells (thick & thin)
    • Shear panels
    • 3D membranes
  • Brick Elements:
    • Tetrahedra (4 or 10 nodes)
    • Pyramids (5 or 13 nodes)
    • Wedges (6 or 15 nodes)
    • Hexahedra (8, 16 or 20 nodes)