Sustainable_Desk

Project Overview:

 This project focused on creating a sustainable desk design that maximized structural efficiency while minimizing material usage. Working within strict material constraints of using only chipboard sheets, we developed an innovative interlocking matrix structure that could support substantial loads without adhesives or fasteners. Through iterative FEA analysis and CAD optimization, the final design achieved a performance index of 98.25, supporting 11.79 kg while weighing only 0.12 kg.

Technical Contributions:

My primary responsibilities focused on the structural and analytical aspects of the project:

1. CAD Design & Iteration

• Developed comprehensive 3D models in SolidWorks for multiple design iterations

• Created detailed technical drawings for laser cutting manufacturing

• Optimized interlocking joint geometries for maximum strength and minimal material usage

• Implemented strategic material reduction through arc cuts on outer edges based on stress analysis

2. FEA Analysis

• Performed extensive finite element analysis to validate structural integrity

• Simulated loading conditions up to 27.54 lbs (12.49 kg) with peak stresses of 4.95e+05 N/m²

• Achieved a minimum factor of safety of 6.07 throughout the structure

• Analyzed displacement patterns, finding maximum deflection of 0.04mm at top edges

• Validated theoretical predictions against physical testing results (94.4% accuracy)

Key Results:

• Design exceeded minimum load requirements (supported 26 lbs vs required 20 lbs)

• Successfully maintained weight under 0.12 kg maximum limit

• Achieved structural failure at 28 lbs, closely matching FEA predictions

• Developed a fully recyclable solution requiring no additional materials or fasteners