Predicting Impact Damage, Residual Strength and Crashworthiness of Composite Structures

Damage tolerance and residual strength of composite sandwich structures

Predicting Motorcycle Helmet Impact Severity from Residual Crush Damage

Motorcycle helmets reduce the frequency and severity of head and brain injuries by attenuating head acceleration and distributing the impact force. This is achieved primarily through permanent crushing of the interior energy absorbing liner. Our goal is to characterize the relationship between residual helmet damage and impact energy. Working toward this goal, the current study measures the cha...

Impact Damage Resistance of Shape Memory Alloy Hybrid Composite Structures

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Modeling and Prediction of FRP Composite Cylinder tubes Crashworthiness Characteristics

In this paper, numerical simulation of FRP composite cylinder tubes progressive crushing processes is conducted using LS-Dyna. Details on the numerical modeling strategy are given and discussed. It is found that triggers introduced in the numerical simulation can effectively model the bevel trigger at the end of the tubular specimens. It is also found that two-layer finite element model based o...

Impact Resistance of Composite Structures

A new approach based concepts of the Discrete Element Method, is presented for impact resistance analysis of composites. The method is capable of analysing the progressive fracturing and fragmentation behaviour as well as potential post cracking interactions caused by the newly created crack sides and segments. The imminence of a material crack is monitored by an anisotropic Hoffman model . To ...