Computational science

Engineering

Bandwidth (computing)

Forging

Applied mathematics

Computer graphics (images)

Subroutine

Operating system

Distortion (music)

Amplifier

Computer science

Computer network

Mechanical engineering

Software

Finite element method

Boundary knot method

Quadrilateral

Mathematics

Political science

Geometry

Boundary element method

Tetrahedron

Element (criminal law)

Structural engineering

Polygon mesh

Programming language

Engineering drawing

Smoothed finite element method

Advances in Engineering Software

In this work, an edge-based smoothed finite element method (ES-FEM) is embedded into the commercial software ABAQUS by using user defined element subroutines (Implicit/UEL, Explicit/VUEL). Unstructured meshes (i.e. triangular and tetrahedral elements) are employed in the framework due to their good geometric adaptability and the advantages of being automatically generated in the software. In ES-FEM, smoothing domains are further constructed associated with edges of triangular or tetrahedral elements. Linear and no-linear material models are included for static, free vibration, and large deformation analysis. Several numerical examples for predicting displacements, eigenvalues, and forging forming process are implemented. Results illustrated that the ES-FEM by using UEL and VUEL presents preciser than traditional finite element method (FEM), temporally stable, and can overcome the difficulties such as mesh distortion when the FEM is solving large deformation problems such as forging. It is valuable to embed the excellent numerical models, for example ES-FEM, into the commercial software since engineers can use it conveniently without professional knowledge. In this work, the detailed procedures are provided for the implementation of ES-FEM in UEL and VUEL, including pre-processing, post-processing and subroutine writing processes.

Development of element model subroutines for implicit and explicit analysis considering large deformations