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Experimental and Numerical Simulation of Composite Materials and Structures for...
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Experimental and Numerical Simulation of Composite Materials and Structures for Extreme Loading Conditions

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Materials Simulation and Design".

Deadline for manuscript submissions: closed (20 August 2023) | Viewed by 2419

Special Issue Editor

Prof. Dr. Andrea Manes

E-Mail Website
Guest Editor
Politecnico di Milano, Department of Mechanical Engineering, via la Masa, 1, 20156 Milan, Italy
Interests: damage; impact; metal; ceramic; composite; simulations; experimental tests
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Composite materials have shown outstanding performance in structural applications due to their highly customizable mechanical properties. These materials have been increasingly utilized for primary structures and are presently recognized to be effective under service loading conditions. However, one major criticality of composite material is their susceptibility to extreme loading conditions that may provoke complex degradation mechanisms. Extreme loading conditions include unforeseen events, conditions that far exceed original design or very demanding requirements that are not included in standard approaches such as, but not limited to, impacts (at different velocities) and blasts. These conditions may provoke complex failure patterns that depend on the peculiarity of the composite materials themselves; these pose challenges in experimental technique and modeling approaches.

This Special Issue therefore aims to collect original research articles and comprehensive reviews that consider experimental and modeling approaches focused on the topic of “Composite Materials and Structures for Extreme Loading Conditions”.

Papers dealing with experimental testing related to materials (i.e. coupon) and full-scale structures, modeling of mechanical behavior, advanced simulation methods including both analytical and numerical approaches, multiphysics and multiscale approaches, in the field of extreme loading conditions applied to composite materials and structures are encouraged.

Prof. Dr. Andrea Manes
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Materials is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • composite
  • extreme loading
  • experimental testing
  • models
  • failure mechanisms

Published Papers (2 papers)

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Research

14 pages, 4956 KiB  
Article
Fatigue Behaviour and Its Effect on the Residual Strength of Long-Fibre-Reinforced Thermoplastic PP LGF30
by Christian Witzgall, Marc Gadinger and Sandro Wartzack
Materials 2023, 16(18), 6174; https://doi.org/10.3390/ma16186174 - 12 Sep 2023
Cited by 2 | Viewed by 830
Abstract
It is undeniable that mechanical properties, such as the stiffness or residual strength of fibre-reinforced thermoplastics, are adversely affected by fatigue damage caused by cyclic loading. In order to quantify and predict this damage influence, a calculation approach was developed in the past [...] Read more.
It is undeniable that mechanical properties, such as the stiffness or residual strength of fibre-reinforced thermoplastics, are adversely affected by fatigue damage caused by cyclic loading. In order to quantify and predict this damage influence, a calculation approach was developed in the past for the subgroup of short-fibre-reinforced thermoplastics. In order to test and expand the applicability of this approach to the field of long-fibre-reinforced thermoplastics, the decrease in mechanical properties is investigated experimentally in this paper using PP LGF30, propylene reinforced with long glass fibres, as an example. The paper describes both the fatigue behaviour and the residual strength of the material after fatigue damage. A decrease in the residual strength of up to about 35% could be recorded. The paper also presents a modelling approach that predicts the orientation-dependent fatigue strength of the material, and furthermore allows for the calculation of its residual strength as a function of fatigue damage. The novelty of the contribution lies in the continuous modelling of fatigue behaviour for arbitrary oriented samples of long-fibre-reinforced thermoplastics and also in the prediction of its residual strength depending on previously induced fatigue damage. Full article
(This article belongs to the Special Issue Experimental and Numerical Simulation of Composite Materials and Structures for Extreme Loading Conditions)
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17 pages, 5220 KiB  
Article
Experimental and Numerical Study of the Influence of Pre-Existing Impact Damage on the Low-Velocity Impact Response of CFRP Panels
by Mohammad Rezasefat, Alessio Beligni, Claudio Sbarufatti, Sandro Campos Amico and Andrea Manes
Materials 2023, 16(3), 914; https://doi.org/10.3390/ma16030914 - 18 Jan 2023
Cited by 6 | Viewed by 1286
Abstract
This paper presents an experimental and numerical investigation on the influence of pre-existing impact damage on the low-velocity impact response of Carbon Fiber Reinforced Polymer (CFRP). A continuum damage mechanics-based material model was developed by defining a user-defined material model in Abaqus/Explicit. The [...] Read more.
This paper presents an experimental and numerical investigation on the influence of pre-existing impact damage on the low-velocity impact response of Carbon Fiber Reinforced Polymer (CFRP). A continuum damage mechanics-based material model was developed by defining a user-defined material model in Abaqus/Explicit. The model employed the action plane strength of Puck for the damage initiation criterion together with a strain-based progressive damage model. Initial finite element simulations at the single-element level demonstrated the validity and capability of the damage model. More complex models were used to simulate tensile specimens, coupon specimens, and skin panels subjected to low-velocity impacts, being validated against experimental data at each stage. The effect of non-central impact location showed higher impact peak forces and bigger damage areas for impacts closer to panel boundaries. The presence of pre-existing damage close to the impact region leading to interfering delamination areas produced severe changes in the mechanical response, lowering the impact resistance on the panel for the second impact, while for non-interfering impacts, the results of the second impact were similar to the impact of a pristine specimen. Full article
(This article belongs to the Special Issue Experimental and Numerical Simulation of Composite Materials and Structures for Extreme Loading Conditions)
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