Dynamic Failure of Composite and Sandwich Structures

This volume showcases recent advances in modeling impact-induced failure, focusing on the dynamic response of a variety of composite and sandwich structures to the forces generated by crashes and explosions, including rare data for full-scale explosive tests.

This book presents a broad view of the current state of the art regarding the dynamic response of composite and sandwich structures subjected to impacts and explosions. Each chapter combines a thorough assessment of the literature with original contributions made by the authors.
The first section deals with fluid-structure interactions in marine structures. The first chapter focuses on hull slamming and particularly cases in which the deformation of the structure affects the motion of the fluid during the water entry of flexible hulls. Chapter 2 presents an extensive series of tests underwater and in the air to determine the effects of explosions on composite and sandwich structures. Full-scale structures were subjected to significant explosive charges, and such results are extremely rare in the open literature. Chapter 3 describes a simple geometrical theory of diffraction for describing the interaction of an underwater blast wave with submerged structures.
The second section addresses the problem of impact on laminated composite structures with chapters devoted to ballistic impacts on pre-stressed composite structures, tests developed to simulate dynamic failure in marine structures, damage mechanisms and energy absorption in low velocity impacts, perforation, the numerical simulation of intra and inter-ply damage during impact, and hail impact on laminated composites.
Sandwich structures with laminated facings are considered in Section 3 with chapters dealing with the discrete modeling of honeycomb core during the indentation of sandwich structures, the behavior of fold core sandwich structures during impact, and impact on helicopter blades. The fourth section consists of two chapters presenting experimental results and numerical simulation of composite structures subjected to crash.

This volume is intended for advanced undergraduate and graduate students, researchers, and engineers interested andinvolved in analysis and design of composite structures.

Discusses a wide range of topics dealing with explosions and impact in marine, aerospace and transportation applications Presents comprehensive assessments of the literature and new developments Contains many new subjects that have not yet appeared in book form Includes supplementary material: sn.pub/extras

Inhalt

Preface.- Hydroelastic Impacts of DeformableWedges.- Blast Loading of Sandwich Structures and Composite Tubes.- Interaction of Underwater Blasts and Submerged Structures.- Compressively Pre-stressed Navy Relevant Laminated and Sandwich Composites Subjected to Ballistic Impact.- Development of a Test to Simulate Wave Impact on Composite Sandwich Marine Structure.- Damage Mechanisms and Energy Absorption in Composite Laminates Under Low Velocity Impact Loads.- Perforation of Composite Laminate Subjected to Dynamic Loads.- Discrete Impact Modeling of Inter- and Intra-laminar Failure in Composites.- High Velocity Hail Impact on Composite Laminates Modelling and Testing.- Discrete Modeling of the Crushing of Nomex Honeycomb Core and Application to Impact and Post-impact Behavior of Sandwich Structures.- Foldcore Sandwich Structures and Their Impact Behaviour: An Overview; ****Experimental and Numerical Study of Normal and Oblique Impacts on Helicopter Blades.- Energy Absorbing Sacrificial Structures Made of Composite Material for Vehicle Crash Design.- Composites and Dynamic Failures: Experimental and Numerical Solving Strategies and Solutions.