Article
Physics, Applied
J. Ferradas Troitino, H. Bajas, L. Bianchi, B. Castaldo, P. Ferracin, M. Guinchard, S. Izquierdo, V Lorenzo, F. Mangiarotti, J. C. Perez, E. Takata, G. Vallone, C. Senatore
Summary: This study focuses on the mechanical stresses generated during a quench in high-field magnets, with a detailed analysis of the mechanical behavior of a Nb3Sn accelerator magnet using finite element models and multi-domain simulations. The results show an increase in transverse coil stresses during a quench discharge, confirming the importance of rigorous analysis in ensuring safe operation of the system.
SUPERCONDUCTOR SCIENCE & TECHNOLOGY
(2021)
Article
Physics, Applied
Eric Qiuli Sun
Summary: A multi-scale nonlinear procedure is proposed to analyze the stress in Nb3Sn superconducting accelerator magnets. The procedure can simulate the complex nonlinear behavior of insulation layers and resin-impregnated cables and calculate the overall performance degradation of the coil by considering actual measured stress-strain curves. It has versatile applications in the design of various magnets utilizing composite materials.
SUPERCONDUCTOR SCIENCE & TECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Zhichao Zhang, Lifan Shi
Summary: The influence of temperature difference on Nb3Sn superconducting strands was studied, and it was found that temperature difference would cause filament fracture. A hierarchical homogenized calculation model considering filament fracture and matrix plasticity was established based on the geometric structure of the European Advanced Superconductor (EAS) strands. Mechanical parameters at different temperatures were predicted and validated through simulation, and the results showed that the initial thermal fiber fracture had significant effects on the mechanical properties of the superconducting strands.
APPLIED SCIENCES-BASEL
(2022)
Article
Thermodynamics
Libin Jiang, Junjie Zhao, Yuanwen Gao, Youhe Zhou
Summary: The study established and analyzed a three-dimensional model to better understand the mechanical behavior of Rutherford cables in complex magnetic environments. The results show that the friction coefficient, laying angle, and core play important roles in the mechanical performance of Rutherford cables.
Article
Mechanics
Yang Zhao, Qianqian Wu, Linzhi Wu
Summary: This study investigates the flexural mechanical properties of multilayer micro-lattice biomaterials using experimental, theoretical and finite element methods. The results show that the flexural property decreases with increasing bending span. Comparing with human skull specimens, the multilayer micro-lattice biomaterial shows good performance in flexural property.
COMPOSITE STRUCTURES
(2023)
Article
Engineering, Multidisciplinary
Tianju Xue, Sigrid Adriaenssens, Sheng Mao
Summary: The phase field method introduces a continuous phase field to regularize sharp crack discontinuities, but its applicability to engineering problems is hindered by computational costs. A mapped phase field method is proposed in this work to address this issue, utilizing a map to connect the physical domain to a parametric domain for more efficient computation and flexibility in adapting to crack evolution. Through numerical examples, it is shown that the proposed method consumes less computational resources compared to conventional methods without sacrificing accuracy.
COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING
(2021)
Article
Materials Science, Multidisciplinary
Meijiaou Qu, Mengqi Li, Zhichao Wen, Weifeng He
Summary: This paper proposes a data-driven method for constructing a material mechanical behavior model, which can predict the mechanical behavior of any material under different loads. The accuracy of the prediction model is verified based on experimental data.
Article
Engineering, Biomedical
Mahdi Shahmoradi, Boyang Wan, Zhongpu Zhang, Michael Swain, Qing Li
Summary: The study aimed to explore the effects of caries and occlusal wear on the mechanical performance of posterior teeth. It was found that caries, worn marginal ridges, and decreased enamel thickness negatively affected crack initiation load values. Additionally, resin infiltration showed potential for recovering mechanical properties in carious teeth.
JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
(2022)
Article
Materials Science, Paper & Wood
Joana C. Vieira, Andre C. Vieira, Antonio de O. Mendes, Ana M. Carta, Paulo T. Fiadeiro, Ana P. Costa
Summary: This study investigated the perforation efficiency of different commercial toilet paper brands and plies using a laboratory perforation system. The results showed that the perforation efficiency stabilized from a cut distance of 6 mm, and the laboratory blade required a 15% increase in cut distance to match the industrial perforation efficiency.
Article
Polymer Science
Daniyar Syrlybayev, Beibit Zharylkassyn, Aidana Seisekulova, Asma Perveen, Didier Talamona
Summary: Fused deposition modeling (FDM) is an affordable and widely used additive manufacturing technology, but its complex physics can lead to non-uniform internal stresses and warpage deformation. Researchers developed a Finite Element Analysis (FEA) model that showed good correlation with experimental results, and optimized warpage using a Taguchi Design of Experiments. By identifying optimal process parameters, they were able to minimize warpage to approximately 320 microns.
Article
Engineering, Multidisciplinary
Xuan Wang, Shuming Zhang
Summary: The geoelectric fields induced during geomagnetic disturbances may disrupt technological systems at the Earth's surface. This paper introduces the applicability of a two-dimensional finite element method (2D-FEM) for studying lateral variations of Earth's conductivity, which includes both E and H polarization cases. The paper calculates the geoelectric field distribution near a continent-ocean boundary using different models and compares it to analytic solutions to verify the accuracy of the finite element method.
ALEXANDRIA ENGINEERING JOURNAL
(2023)
Article
Materials Science, Multidisciplinary
O. Duncan, M. Chester, W. Wang, A. Alderson, T. Allen
Summary: The effect of twist on indentation resistance was tested using various chiral lattices. It was found that the twisted lattice had about 70% higher indentation force compared to the non-twisted lattice. The results were in reasonable agreement with calculations using micropolar and Willis' plane stress moduli.
MATERIALS TODAY COMMUNICATIONS
(2023)
Article
Engineering, Multidisciplinary
Min Wang, Ke Gao, Y. T. Feng
Summary: This study developed a continuum-based combined finite-discrete element method (FDEM) with fracture algorithms to investigate complex fracturing processes. By comparing different fracture algorithms, it was found that the intra-element fracture algorithm is more efficient and accurate in simulating fracturing processes.
COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING
(2021)
Article
Construction & Building Technology
Haopeng Zhang, Haibo Ding, Ali Rahman
Summary: This study investigates the effects of mesostructure characteristics of asphalt mixture on the fracture behavior of semicircular bending samples. It establishes a two-dimensional finite-element model considering viscoelastic properties and uses digital image processing technology and a cohesive zone model to validate the model. The study examines the crack initiation and propagation process, the damage distribution of cohesive elements, and the effects of mesostructure characteristics on damage and fracture behavior. It finds that increasing porosity leads to a decrease in ultimate bearing capacity and a propagation of cracks towards air voids. Weaker interface strength between aggregate and asphalt mortar decreases maximum bearing capacity and increases damage at the interface. Additionally, increasing initial crack length reduces bearing capacity, fracture energy, and creep dissipation energy.
JOURNAL OF MATERIALS IN CIVIL ENGINEERING
(2022)
Review
Materials Science, Multidisciplinary
Ling Chen, Wenjin Xing, Liwei Wu, Joel Chong, Tongda Lei, Qian Jiang, Youhong Tang
Summary: Composite helical springs (CHSs) have extensive applications in transportation and aerospace fields, with advantages of energy conservation and emission reduction. CHSs have the potential for great development due to their low weight, high specific strength, high specific modulus, corrosion resistance, fatigue resistance, and high strain energy storage capacity. Optimizing the static and dynamic performance of CHSs is an important task.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)