Home Technology In-Plane Dynamic Crushing Behavior of Hierarchical Honeycomb Sandwich Panel Under Blast Loading: A Finite Element Study
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In-Plane Dynamic Crushing Behavior of Hierarchical Honeycomb Sandwich Panel Under Blast Loading: A Finite Element Study

  • Ahsan Ul Haq and Suresh Kumar Reddy Narala
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Smart Materials
This chapter is in the book Smart Materials

Abstract

Achieving superior shock mitigation and energy absorption under high impulsive blast loading, yet maintaining lightweight design feature, is still a challenge for defense scientific community. Hierarchical honeycombs, as lightweight and energy-absorbing materials, are being widely investigated owing to their improved structural stress and stiffness and therefore applying such lightweight structures for the purpose of blast mitigation could be a favorable approach. This study proposes the use of a hierarchical honeycomb core to enhance shock mitigation performance by increasing energy absorption and reducing back-sheet deflection. To assess the behavior of the hierarchical honeycomb sandwich panel (HHSPHHSP), air blast simulations are conducted using the ConWep code in Abaqus/Explicit. The in-plane crushing performance of the HHSP has been compared with a solid plate having the same areal density. The sandwich panel is subjected to various TNTTNT loads at different stand-off distances. HHSP exhibits interesting in-plane crushing behavior as they effectively adapt to shock loading by gradually drawing material into the locally loaded region, thereby enhancing shock mitigation capacity. In contrast, traditional honeycomb panels undergo plastic deformation without localized stiffness enhancement. Against a 1 kg load, front-sheet bending followed by progressive core buckling is reported. While significant increase in cell wall buckling and core densification is reported against a 3 kg load. Moreover, the HHSP absorbs 27% more energy and experiences 19% less back-sheet deflection when compared with its monolithic counterpart. These findings provide a reliable basis for designing sandwich panels with hierarchical honeycomb cores to achieve enhanced blast resistance.

Abstract

Achieving superior shock mitigation and energy absorption under high impulsive blast loading, yet maintaining lightweight design feature, is still a challenge for defense scientific community. Hierarchical honeycombs, as lightweight and energy-absorbing materials, are being widely investigated owing to their improved structural stress and stiffness and therefore applying such lightweight structures for the purpose of blast mitigation could be a favorable approach. This study proposes the use of a hierarchical honeycomb core to enhance shock mitigation performance by increasing energy absorption and reducing back-sheet deflection. To assess the behavior of the hierarchical honeycomb sandwich panel (HHSPHHSP), air blast simulations are conducted using the ConWep code in Abaqus/Explicit. The in-plane crushing performance of the HHSP has been compared with a solid plate having the same areal density. The sandwich panel is subjected to various TNTTNT loads at different stand-off distances. HHSP exhibits interesting in-plane crushing behavior as they effectively adapt to shock loading by gradually drawing material into the locally loaded region, thereby enhancing shock mitigation capacity. In contrast, traditional honeycomb panels undergo plastic deformation without localized stiffness enhancement. Against a 1 kg load, front-sheet bending followed by progressive core buckling is reported. While significant increase in cell wall buckling and core densification is reported against a 3 kg load. Moreover, the HHSP absorbs 27% more energy and experiences 19% less back-sheet deflection when compared with its monolithic counterpart. These findings provide a reliable basis for designing sandwich panels with hierarchical honeycomb cores to achieve enhanced blast resistance.

Chapters in this book

  1. Frontmatter I
  2. Preface V
  3. Acknowledgments
  4. Contents XI
  5. Smart Surfaces and Coatings: An Innovative Approach 1
  6. Emerging Technologies in Cementitious Material Design: Autonomous Healing and Durability Enhancement Mechanisms 33
  7. A Study on the Strength and Stiffness of Shape Memory Alloy-Reinforced Structural Composites 63
  8. Modelling Techniques to Analyse the Functionality of Metallic Glass Alloys as Biomedical Implants: A Mini-review 75
  9. Numerical Modelling of URM Piers of Various Bond Patterns 91
  10. Sustainability and Durability Synergy: Self-Healing Concrete in Ultra-High-Rise Structures 101
  11. Experimental Investigations on Metallic Current Collectors and on the Performance of PDMFC 117
  12. In-Plane Dynamic Crushing Behavior of Hierarchical Honeycomb Sandwich Panel Under Blast Loading: A Finite Element Study 127
  13. Utilizing the U-Net Image Machine Learning Segmentation Model for Automated Analysis of Grain Sizes in Metallographic Microstructures 141
  14. Advancements in Banana Fiber-Reinforced Composites: Mechanical Properties, Sustainability, and Scientometric Analysis 151
  15. Exploring the Applications of Smart Materials in the Medical and Healthcare Sectors 173
  16. Advancements in 3D Printing of Composite Materials: Challenges and Prospects 193
  17. Colloidal Formulation and Robocasting of Silicon Nitride Scaffolds with Tailored TPMS Structures 209
  18. List of Contributors
  19. Index 233
https://doi.org/10.1515/9783111515717-008

Chapters in this book

  1. Frontmatter I
  2. Preface V
  3. Acknowledgments
  4. Contents XI
  5. Smart Surfaces and Coatings: An Innovative Approach 1
  6. Emerging Technologies in Cementitious Material Design: Autonomous Healing and Durability Enhancement Mechanisms 33
  7. A Study on the Strength and Stiffness of Shape Memory Alloy-Reinforced Structural Composites 63
  8. Modelling Techniques to Analyse the Functionality of Metallic Glass Alloys as Biomedical Implants: A Mini-review 75
  9. Numerical Modelling of URM Piers of Various Bond Patterns 91
  10. Sustainability and Durability Synergy: Self-Healing Concrete in Ultra-High-Rise Structures 101
  11. Experimental Investigations on Metallic Current Collectors and on the Performance of PDMFC 117
  12. In-Plane Dynamic Crushing Behavior of Hierarchical Honeycomb Sandwich Panel Under Blast Loading: A Finite Element Study 127
  13. Utilizing the U-Net Image Machine Learning Segmentation Model for Automated Analysis of Grain Sizes in Metallographic Microstructures 141
  14. Advancements in Banana Fiber-Reinforced Composites: Mechanical Properties, Sustainability, and Scientometric Analysis 151
  15. Exploring the Applications of Smart Materials in the Medical and Healthcare Sectors 173
  16. Advancements in 3D Printing of Composite Materials: Challenges and Prospects 193
  17. Colloidal Formulation and Robocasting of Silicon Nitride Scaffolds with Tailored TPMS Structures 209
  18. List of Contributors
  19. Index 233
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