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Multiscale Simulation of Composite Structures: Damage Assessment, Mechanical Analysis and Prediction (Volume II)

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

Deadline for manuscript submissions: closed (10 July 2023) | Viewed by 1016

Special Issue Editor

Special Issue Information

Dear Colleagues,

Composites can be engineered to exhibit a high strength, high stiffness, and high toughness. Composite structures have been used increasingly in various engineering applications. In recent decades, the fundamentals of science have expanded their span of length by many orders of magnitude. Nowadays, one of the primary goals of science and technology seems to be to develop reliable methods for linking the physical phenomena that occur over multiple length scales, particularly from a nano-/micro-scale to a macroscale. To engineer composites for high performance and to design advanced structures, the relationship between material nano-/micro-structures and their macroscopic properties must be established in order to accurately predict their mechanical performance and failure. Multiscale simulation is the enabling tool for the study and comprehension of complex systems and phenomena that would otherwise be too expensive or dangerous, or even impossible, to study by direct experimentation.

The aim of this Special Issue is to assemble high-quality papers that advance the field of multiscale simulation of composite structures through the application of any modern computational and/or analytical methods alone or in conjunction with experimental techniques, for damage assessment or mechanical analysis and prediction.

It is my pleasure to invite you to submit a manuscript for this Special Issue. Full papers, communications, and reviews are all welcome.

Dr. Stelios K. Georgantzinos
Guest Editor

Manuscript Submission Information

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Keywords

  • composite structures
  • nanomechanics
  • micromechanics
  • homogenization methods
  • computational techniques
  • analytical methods
  • multiscale simulation
  • mechanical analysis
  • damage assessment
  • failure

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Published Papers (1 paper)

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Research

27 pages, 25954 KiB  
Article
Identification of Anisotropic Coefficients in the Non-Principal Axis Directions of Tubular Materials Using Hole Bulging Test
by Yanli Lin, Yifan Wang, Yibo Su, Junpeng Liu, Kelin Chen and Zhubin He
Materials 2023, 16(13), 4629; https://doi.org/10.3390/ma16134629 - 27 Jun 2023
Viewed by 747
Abstract
We propose an experimental method to identify anisotropic coefficients in non-principal axis directions of thin-walled tubes. The method involves extracting specimens from the parent tubes and machining a hole in the axial center. The specimens are then inserted into a tube without a [...] Read more.
We propose an experimental method to identify anisotropic coefficients in non-principal axis directions of thin-walled tubes. The method involves extracting specimens from the parent tubes and machining a hole in the axial center. The specimens are then inserted into a tube without a hole. The inner diameter of the specimen is theoretically equal to the outer diameter of the inner tube. The double-layer tube undergoes free bulging under internal pressure in our self-developed experimental equipment, with the hole on the specimen expanding simultaneously. The stress states around the hole are uniaxial, and the hole deformation can reflect the anisotropic plastic flow characteristics of the tube. Furthermore, based on the information obtained from the proposed experimental method, a hybrid numerical–experimental method was used to identify the anisotropic coefficients of tubes. Through FE simulations, the relationships between the thickness, stress, and strain states around the hole, the hole shape, and anisotropic coefficients of non-principal axis directions are revealed, and the factors that affect the hole deformation are analyzed. Finally, the hole bulging experiments and FE simulations of AA6061-O extruded tube were conducted, and modeled with Hill48 and calibrated by uniaxial tensile and hoop tensile tests. Its in-plane anisotropy coefficients in any direction are given for the first time which first increase and then decrease from 0° to 90°, reaching a maximum of 1.13 in 60° and a minimum of 0.69 in 0°. This work can provide the key experimental data for establishing an accurate anisotropic plastic constitutive model of thin-walled tubes. Full article
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