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GP-ME-07GJYQ0MechanicalReady

CalculiX structural bracket simulation

A CalculiX 2.23 finite-element study of a steel mounting bracket under a 300 N end load, including mesh convergence and two reinforced designs.

CalculiX structural bracket simulation project visual
GP-ME-07GJYQ0 · Mechanical
  • CalculiX 2.23
  • Python
  • Gmsh 4.15.2 optional
  • ParaView optional
  • Jupyter
  • Matplotlib

Software compatibility

CalculiX 2.23 only

The solver, input decks, and reference results use the pinned CalculiX 2.23 environment. Abaqus, ANSYS Mechanical, Nastran, and SolidWorks Simulation project files are not included.

Project definition

Problem statement

Bracket stress depends on geometry, load introduction, supports, contacts, material assumptions, element type, mesh, and stress concentration interpretation.

Project objectives

  • Generate a conforming C3D8I hexahedral model of a steel L-bracket.
  • Calculate displacement, reactions, and von Mises stress under a 300 N end load.
  • Demonstrate displacement convergence using 4 mm, 2 mm, and 1 mm baseline meshes.
  • Compare a uniformly thickened bracket with a centrally ribbed bracket.
  • Verify force equilibrium and compare the response with a cantilever-beam calculation.

Project structure

Project components

01

Geometry and mesh

Generates baseline, thickened, and ribbed bracket solids with shared nodes, named sets, and controlled mesh sizes.

02

CalculiX model

Defines linear-elastic steel, C3D8I elements, the fixed face, distributed end load, and solver output.

03

Result parser

Reads CalculiX output and calculates displacement, reactions, assessment stress, percentiles, mass, and balance.

04

Convergence study

Compares the 4 mm, 2 mm, and 1 mm baseline meshes under the same physical model.

05

Design comparison

Evaluates baseline, 8 mm thickened, and 6 mm central-rib designs under identical loading.

Methodology

Project workflow

  1. 01
    Generate

    The selected case creates a fresh input deck and mesh metadata.

  2. 02
    Solve

    The pinned CalculiX 2.23 container completes the linear static analysis.

  3. 03
    Parse

    Python extracts numerical results and writes a structured JSON summary.

  4. 04
    Verify

    Tests check volume, connectivity, load sum, stress reduction, equilibrium, and analytical formulas.

  5. 05
    Compare

    Tables and plots present convergence and design performance.

Demonstration scenario

A 100 mm steel mounting bracket under a 300 N end load is solved on three baseline meshes. The verified study then compares an 8 mm thickened design and a centrally ribbed design for displacement, mass, and stress.

Engineering

Tools and method

Tools
The project uses CalculiX 2.23, Python, Gmsh 4.15.2 optional, ParaView optional, Jupyter, Matplotlib for subject analysis, simulation, and results.
Environment
CalculiX 2.23 is compiled from its verified official source archive in a pinned Docker image.
FE model
A Python generator writes conforming C3D8I meshes, material data, loads, constraints, sets, and output requests.
Post-processing
Python parses DAT and FRD files and produces JSON, CSV, Markdown, SVG, and PNG results.
Verification
Reaction balance, a cantilever reference, unit tests, mesh refinement, and repository validation are included.

Testing

Evaluation

Evaluation measures

  • Vertical force equilibrium
  • Tip displacement comparison with a cantilever reference
  • Medium-to-fine displacement change
  • Maximum and 95th-percentile assessment stress
  • Mass, stiffness, and stress comparison across three designs
  • Explicit interpretation limits for idealised supports and local stress peaks

Project boundaries

  • Only the pinned CalculiX model is delivered.
  • The first scope uses documented linear elastic and small-deformation assumptions.
  • Fatigue, fracture, plasticity, contact, manufacturing defects, and load uncertainty are excluded unless explicitly scoped.
  • The result is not a certified mechanical design or proof of physical safety.

Included

  1. 01Generated C3D8I bracket meshes and five native CalculiX input decks
  2. 02Pinned source-built CalculiX 2.23 Docker environment
  3. 03Displacement, stress, reaction, convergence, and visualisation scripts
  4. 04Baseline, thickened, and ribbed reference cases with verified results
  5. 05Complete project files, models, calculations, and analysis material in a private GitHub repository
  6. 0678-page project documentation in PDF and editable Word formats
  7. 0714-page setup and usage guide

Project record

No information is collected on this page.

Permanent project ID
GP-ME-07GJYQ0
Catalogued
22 Aug 2026
Completed
22 Aug 2026
Verified
22 Aug 2026
Demonstration
Included in repository

Handover

After purchase

  1. 01
    Payment is confirmed

    The project is marked unavailable and cannot be purchased again.

  2. 02
    Repository access is granted

    The buyer's submitted GitHub account receives access to the private repository.

  3. 03
    The purchase record is delivered

    The certification sheet is prepared from the reviewed buyer details and sent privately by email.