Damage mechanisms and energy absorption of aluminosilicate glass under compression/tensile loading

2021 ◽  
Vol 288 ◽  
pp. 123088
Author(s):  
Muhammad Zakir Sheikh ◽  
Muhammad Atif ◽  
Yulong Li ◽  
Fenghua Zhou ◽  
Muhammad Aamir Raza ◽  
...  
Keyword(s):  
Energy Absorption ◽  
Tensile Loading ◽  
Aluminosilicate Glass ◽  
Damage Mechanisms

A multiscale approach for modelling impact on woven composites under consideration of the fabric topology

2018 ◽  
Vol 52 (21) ◽  
pp. 2859-2874 ◽  
Author(s):  
Martin Schwab ◽  
Melanie Todt ◽  
Heinz E Pettermann
Keyword(s):  
Total Energy ◽  
Energy Absorption ◽  
Temporal Distribution ◽  
Woven Composites ◽  
Multiscale Approach ◽  
Stress Concentrations ◽  
Damage Mechanisms ◽  
Explicit Finite Element ◽  
Impact Behaviour ◽  
The Impact

A computationally efficient multiscale modelling approach for predicting impact damage within fabric reinforced laminated composites is presented. In contrast to common ply-level approaches, the topology of a multi-layered fabric reinforced laminate is resolved at tow-level for a sub-domain embedded in a shell layer with homogenised representation of the laminate. The detailed sub-domain is entirely modelled using shell elements, where material nonlinearities such as damage and plasticity-like behaviour of the tows, inelastic behaviour of unreinforced resin zones up to failure and delamination between plies are accounted for. To exemplify the capabilities of the approach, an explicit finite element simulation of a laminated plate consisting of eight carbon fabric reinforced epoxy plies with eight harness satin weaving style in a drop weight impact test setup is conducted. The spatial and temporal distribution of intra- and inter-ply damage is predicted and the total energy absorption by the plate, as well as the contributions of individual damage mechanisms are evaluated. The predictions show very good agreement with corresponding experimental data from the literature and give insight into the impact behaviour of the laminate beyond the capability of usual experiments. The new approach allows to resolve the stress concentrations due to fabric topology in detail. Compared to common ply-level approaches this is reflected in different predicted energy absorptions per mechanism although, the total energy absorption hardly differs. This is especially important when the post impact behaviour of laminates is predicted as it is strongly influenced by the extent of the individual damage mechanisms.

scholarly journals An experimental and numerical investigation into damage mechanisms in tapered laminates under tensile loading

2020 ◽  
Vol 133 ◽  
pp. 105862 ◽  
Author(s):  
Bing Zhang ◽  
Luiz F. Kawashita ◽  
Mike I. Jones ◽  
James K. Lander ◽  
Stephen R. Hallett
Keyword(s):  
Numerical Investigation ◽  
Tensile Loading ◽  
Damage Mechanisms

Micromechanical Model of a Collagen Based Tendon Surrogate: Development and Validation

2012 ◽  
Author(s):  
Shawn P. Reese ◽  
Jeffrey A. Weiss
Keyword(s):  
Finite Element ◽  
Computational Model ◽  
Physical Model ◽  
Micromechanical Model ◽  
Tensile Loading ◽  
Fe Model ◽  
Damage Mechanisms ◽  
High Importance ◽  
Force Transfer ◽  
Development And Validation

In tendons and ligaments, collagen is organized hierarchically into nanoscale fibrils, microscale fibers and mesoscale fascicles. Force transfer across scales is complex and poorly understood, and macroscale strains are not representative of the microscale strains [1]. Since innervation, the vasculature, damage mechanisms and mechanotransduction occur at the microscale, understanding such multiscale interactions is of high importance. In this study, a physical model was used in combination with a computational model to isolate and study the mechanisms of force transfer between scales. The objectives of this study were to develop a collagen based tendon surrogate for use as a physical model and subject it to tensile loading, and to create and validate a 3D micromechanical finite element (FE) model of the surrogate.

scholarly journals Energy Absorption of High-Impact Polystyrene under Tensile Loading.

1998 ◽  
Vol 55 (9) ◽  
pp. 557-565 ◽  
Author(s):  
Takashi KUBOKI ◽  
Pean-Yue Ben JAR ◽  
Kiyoshi TAKAHASHI ◽  
Tetsuya SHINMURA
Keyword(s):  
Energy Absorption ◽  
Tensile Loading ◽  
High Impact ◽  
High Impact Polystyrene
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