Dynamic Characteristics of Additive Manufacturing Based on Dual Materials of Heterogeneity
Hsien-Hsiu Hung1, Shih-Han Chang2, Yu-Hsi Huang1
1Department of Mechanical Engineering, National Taiwan University, Taipei 10617, Taiwan.
Polymers
|July 12, 2025
Summary
This study develops a method combining experiments and finite element analysis (FEA) to understand the dynamic behavior of 3D-printed soft-hard composites. The findings validate a new modeling framework for these advanced materials.
Area of Science:
- Materials Science
- Mechanical Engineering
- Additive Manufacturing
Background:
- Investigating the dynamic mechanical behavior of advanced composite materials is crucial for structural applications.
- Additive manufacturing (AM) offers novel ways to create complex composite structures with tailored properties.
- Understanding the interplay between soft and hard materials in laminated composites under dynamic loads is essential.
Purpose of the Study:
- To establish an integrated methodology combining experimental measurements and finite element analysis (FEA) for analyzing soft-hard laminated composites fabricated via AM.
- To characterize the time- and frequency-dependent stiffness response of these composites and implement it in structural dynamic simulations.
- To validate the accuracy and reliability of the proposed modeling framework through experimental and simulation comparisons.
Main Methods:
- Utilized a hybrid AM technique (PolyJet/SLA) to fabricate composite beam structures with alternating soft and hard materials.
- Determined material properties through impact tests (hard material) and tensile/stress relaxation tests (soft material) to derive Prony series parameters.
- Performed impact tests on multilayer composite beams and compared experimental results with FEA simulations.
Main Results:
- Successfully identified material parameters for both hard and viscoelastic soft materials.
- Validated the accuracy of resonant frequencies and dynamic responses through combined experimental and simulation approaches.
- Analyzed the influence of composite material symmetry and thickness ratio on dynamic modal characteristics.
Conclusions:
- The integrated experimental and FEA methodology provides a reliable framework for predicting the dynamic behavior of AM-fabricated soft-hard composites.
- The study successfully characterized the viscoelastic properties of the soft material and their impact on the composite's dynamic response.
- The findings contribute to the development and application of advanced composite materials manufactured using additive techniques.
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