Computational Mechanics in Design and Optimization of Structures and Advanced Materials

A special issue of Machines (ISSN 2075-1702). This special issue belongs to the section "Material Processing Technology".

Deadline for manuscript submissions: closed (31 August 2023) | Viewed by 3027

Special Issue Editors

Mechanical Engineering Department, Shamoon Collage of Engineering, Be’er-Sheva 84100, Israel
Interests: computational mechanics; fracture mechanics; biomechanics

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Guest Editor
Mechanical Engineering Department, Shamoon Collage of Engineering, Be’er-Sheva 84100, Israel
Interests: mechanical engineering; computational biomechanics; solid mechanics

Special Issue Information

Dear Colleagues,

Computational models, once verified and validated, are a powerful tool for the study of a wide variety of problems in mechanics. The finite element method, for example, is used extensively to solve problems in solid mechanics, heat transfer, fluid mechanics, or any coupling of different fields. In component or structural design, models are utilized to investigate the component manufacturing process, deformations under load, damage and failure, and life expectancy. The use of computational models is also essential in the design and optimization of advanced materials such as metal or polymer matrix composites. Multiscale computational analysis can help to understand the role of microstructure on effective mechanical or thermal properties and offer insights into various failure phenomena which originate at the microscale.

In this Special Issue on “Computational Mechanics in the Design and Optimization of Structures and Advanced Materials”, we invite researchers in the field of computational mechanics to present new and innovative uses of computational modelling in the study and analysis of component and structural design. We also invite studies that deal with the use of computational models in the study of advanced material behavior or performance. Papers accepted in this Special Issue are expected to contain original ideas and potential solutions available for using computational methods to resolve real current engineering problems.

The topics covered include but are not limited to the following:

  • Coupled field problems (thermomechanics, FSI);
  • Computational biomechanics;
  • Computational metal forming;
  • Computational fracture mechanics;
  • Computational material science;
  • Structure optimization.

Dr. Elad Priel
Dr. Nir Trabelsi
Guest Editors

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. Machines is an international peer-reviewed open access monthly 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 2400 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

  • finite element methods
  • modeling simulation
  • advanced materials
  • composites
  • fracture mechanism
  • stress analysis
  • design optimization

Published Papers (2 papers)

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Research

17 pages, 10395 KiB  
Article
Improvement of Crashworthiness Indicators with a New Idea in the Design of the Multi-Cell Hexagonal Tube under Dynamic Axial Load
by Reza Sistani, Mahmoud Mousavi Mashhadi and Younes Mohammadi
Machines 2023, 11(6), 641; https://doi.org/10.3390/machines11060641 - 11 Jun 2023
Viewed by 956
Abstract
Multi-cell hexagonal tubes have been applied in a wide range of industries. The present study investigates strengthening a single regular hexagonal tube under a dynamic axial load with three different geometrical shapes. The results are then compared with crashworthiness indicators from the finite [...] Read more.
Multi-cell hexagonal tubes have been applied in a wide range of industries. The present study investigates strengthening a single regular hexagonal tube under a dynamic axial load with three different geometrical shapes. The results are then compared with crashworthiness indicators from the finite element code LS-DYNA using the simple additive weighting method, and the appropriate section of a multi-cell hexagonal tube under dynamic axial load is selected. An idea is further presented by assuming the thicknesses variable for certain parts of the selected section to improve crashworthiness criteria. Combinations with different variable thicknesses in defined thickness intervals are made into a lattice. Numerical tests are performed based on the lattice nodes using LS-DYNA. The regression models for crashworthiness indicators are created using the Minitab software and optimized to find optimum combinations of thicknesses. The optimization results are tested again by LS-DYNA, and the appropriate answers are determined. The comparison of the results of this method with those of optimization with constant thicknesses demonstrates improvement in the crashworthiness indicators. Full article
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15 pages, 3510 KiB  
Article
Finite Element Analysis and Reinforcement of Steel Crane Beam under Eccentric Track Loading
by Chunting Lu, Zheng Yang, Pengfei Li, Xiangwei Zhang, Jie Huang and Ling Wang
Machines 2022, 10(9), 783; https://doi.org/10.3390/machines10090783 - 07 Sep 2022
Cited by 2 | Viewed by 1529
Abstract
The crane track of a steel structure workshop was installed eccentrically, and the crane operation caused a large deflection of the crane beam, requiring reinforcement measures. The finite element model of the crane beam was established by Midas Gen finite element software, and [...] Read more.
The crane track of a steel structure workshop was installed eccentrically, and the crane operation caused a large deflection of the crane beam, requiring reinforcement measures. The finite element model of the crane beam was established by Midas Gen finite element software, and the maximum stress, deflection, and the stress amplitude of 9 m and 12 m steel crane beam under different track eccentricity values were analyzed. The results show that when there is no brake truss, the maximum stress and deflection of the crane beam will increase greatly under the action of eccentric loading. On the contrary, a brake truss can effectively reduce the adverse effect of eccentric loading; the fatigue strength of crane beam cannot be controlled under eccentric rail loading. The reason why steel crane beam is sensitive to track eccentricity is that its torsional stiffness is too small. As a reinforcement measure, welding angle steel or steel plate lower on the crane beam flange, forming a box section, can effectively increase the torsional stiffness of the crane beam; the residual stress can then be effectively reduced by applying intermittent welding and reinforcement using the same material. Full article
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