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The Strength of Egg Trays under Compression: A Numerical and Experimental Study
Leszek Czechowski1, Gabriela Kmita-Fudalej2, Włodzimierz Szewczyk2
1Department of Strength of Materials, Lodz University of Technology, 90-924 Lodz, Poland.
Materials (Basel, Switzerland)
|May 21, 2020
Summary
This study analyzed egg package compression strength. Modified packaging with ribs and grooves significantly improved stiffness and load-bearing capacity compared to basic designs and market alternatives.
Area of Science:
- Materials Science
- Mechanical Engineering
- Packaging Science
Background:
- Egg packaging is crucial for product protection during transport and handling.
- Existing egg packaging designs may not offer optimal compression resistance.
- Sustainable materials are increasingly important in packaging development.
Purpose of the Study:
- To experimentally and numerically analyze the compression behavior of egg packages.
- To compare the performance of novel egg package designs against market standards.
- To investigate the impact of structural modifications on package strength and stiffness.
Main Methods:
- Experimental compression tests were conducted on various egg package designs.
- Numerical modeling using the finite element method (FEM) was employed to simulate compression.
- Packages were conditioned at 50% relative humidity before testing.
- Material properties included perfect plasticity, large strains, and deflections.
Main Results:
- Modified egg package structures with ribs and grooves showed improved performance.
- Strength ratio increased by approximately 23.4% and compression stiffness by 36% compared to basic trays.
- The modified designs outperformed most commercially available egg packages in terms of strength and stiffness.
Conclusions:
- Incorporating features like ribs and grooves enhances egg package structural integrity.
- The developed modified packaging offers superior compression resistance and stiffness.
- The study provides a validated numerical model for predicting egg package performance.
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