ANSYS Van Chassis FEA Comparison
Budget: €250 – €750 EUR
Project Overview
We are seeking an expert FEA Engineer to perform a comparative structural analysis on a van chassis using ANSYS 2023. The goal is to prove that after introducing two large cutouts on the roof (which requires cutting existing structural ribs), the proposed reinforcement frame maintains or improves the original structural integrity against a roll-over force.
Since this is a comparative analysis, CAD simplification (midsurface extraction, cleaning non-structural details) is expected, provided the exact same simplification strategy is applied to both the baseline and modified scenarios.
Scope of Work & Step-by-Step Deliverables
Phase 1: Geometry Preparation, Cleaning & Contact Definition
Midsurface Extraction: Convert the provided 3D van chassis geometry into a clean midsurface model optimized for shell meshing.
Gap Management (GLUE Condition): The original chassis parts have physical assembly gaps (up to several millimeters) meant for foam/adhesive. The freelancer must bridge these gaps using GLUE / Bonded contact conditions to ensure realistic load transfer.
Baseline Setup: Prepare the original chassis model containing all 5 existing roof reinforcement ribs (costillas).
Phase 2: Scenario 1 – Original Chassis Analysis (Baseline)
Boundary Conditions: Apply a fully fixed constraint (Encastre) along the entire bottom perimeter where the chassis is cut (below the window line).
Loading: Apply a directional force on the upper rear corner (the radius between the side panel and the roof) to simulate a roll-over event.
Solving: Extract Von Mises stresses and Total Deformations.
Phase 3: Scenario 2 – Modification and Reinforcement Design
Roof Cutouts: Modify the geometry by opening two specific cutouts on the roof:
Cutout 1: 810 mm x 500 mm
Cutout 2: 950 mm x 810 mm
(Note: The exact coordinates/positioning of these holes will be provided at the start of the contract).
Rib Interruption: Opening these holes will completely cut 3 out of the 5 original roof ribs.
Structural Reinforcement: Model a reinforcement frame around the perimeter of both cutouts using 30x10x1 mm structural tubing. This tubing network must structurally interconnect all 5 ribs (the 2 untouched ribs + the 3 severed ribs) to restore the load path.
Solving: Run the simulation under the exact same boundary and load conditions as Phase 2.
Phase 4: Comparative Reporting
Deliver a detailed technical report comparing maximum displacement and Von Mises stress distribution between Scenario 1 and Scenario 2 to validate the safety of the modification.
Software & Deliverable Requirements (CRITICAL)
Software Version: The entire project MUST be done in ANSYS 2023. No other versions or software will be accepted.
Parametric Model Files: You must deliver the complete, fully configured ANSYS project source files (archive .wbpz or raw database).
Model Flexibility: The boundary conditions, contacts, and loads must be set up parametrically so that the client can easily open the file and change the force magnitude, direction, or application point in the future without rebuilding the model.
Final Report: A PDF document summarizing the methodology, mesh quality metrics, and comparative plots.
Project Terms & Guidelines (For Dispute Resolution)
⚠️ Important Note for the Freelancer: This document serves as the official framework for project completion and milestone release. Both parties agree that:
Milestones will only be released once the fully functioning, editable ANSYS 2023 model files are delivered and verified.
The reinforcement must explicitly interconnect all 5 ribs using the specified 30x10x1 mm profile.
If the model is locked or non-configurable regarding load changes, it will be considered incomplete.
We are seeking an expert FEA Engineer to perform a comparative structural analysis on a van chassis using ANSYS 2023. The goal is to prove that after introducing two large cutouts on the roof (which requires cutting existing structural ribs), the proposed reinforcement frame maintains or improves the original structural integrity against a roll-over force.
Since this is a comparative analysis, CAD simplification (midsurface extraction, cleaning non-structural details) is expected, provided the exact same simplification strategy is applied to both the baseline and modified scenarios.
Scope of Work & Step-by-Step Deliverables
Phase 1: Geometry Preparation, Cleaning & Contact Definition
Midsurface Extraction: Convert the provided 3D van chassis geometry into a clean midsurface model optimized for shell meshing.
Gap Management (GLUE Condition): The original chassis parts have physical assembly gaps (up to several millimeters) meant for foam/adhesive. The freelancer must bridge these gaps using GLUE / Bonded contact conditions to ensure realistic load transfer.
Baseline Setup: Prepare the original chassis model containing all 5 existing roof reinforcement ribs (costillas).
Phase 2: Scenario 1 – Original Chassis Analysis (Baseline)
Boundary Conditions: Apply a fully fixed constraint (Encastre) along the entire bottom perimeter where the chassis is cut (below the window line).
Loading: Apply a directional force on the upper rear corner (the radius between the side panel and the roof) to simulate a roll-over event.
Solving: Extract Von Mises stresses and Total Deformations.
Phase 3: Scenario 2 – Modification and Reinforcement Design
Roof Cutouts: Modify the geometry by opening two specific cutouts on the roof:
Cutout 1: 810 mm x 500 mm
Cutout 2: 950 mm x 810 mm
(Note: The exact coordinates/positioning of these holes will be provided at the start of the contract).
Rib Interruption: Opening these holes will completely cut 3 out of the 5 original roof ribs.
Structural Reinforcement: Model a reinforcement frame around the perimeter of both cutouts using 30x10x1 mm structural tubing. This tubing network must structurally interconnect all 5 ribs (the 2 untouched ribs + the 3 severed ribs) to restore the load path.
Solving: Run the simulation under the exact same boundary and load conditions as Phase 2.
Phase 4: Comparative Reporting
Deliver a detailed technical report comparing maximum displacement and Von Mises stress distribution between Scenario 1 and Scenario 2 to validate the safety of the modification.
Software & Deliverable Requirements (CRITICAL)
Software Version: The entire project MUST be done in ANSYS 2023. No other versions or software will be accepted.
Parametric Model Files: You must deliver the complete, fully configured ANSYS project source files (archive .wbpz or raw database).
Model Flexibility: The boundary conditions, contacts, and loads must be set up parametrically so that the client can easily open the file and change the force magnitude, direction, or application point in the future without rebuilding the model.
Final Report: A PDF document summarizing the methodology, mesh quality metrics, and comparative plots.
Project Terms & Guidelines (For Dispute Resolution)
⚠️ Important Note for the Freelancer: This document serves as the official framework for project completion and milestone release. Both parties agree that:
Milestones will only be released once the fully functioning, editable ANSYS 2023 model files are delivered and verified.
The reinforcement must explicitly interconnect all 5 ribs using the specified 30x10x1 mm profile.
If the model is locked or non-configurable regarding load changes, it will be considered incomplete.