Article
Thermodynamics
M. B. Farrukh, G. M. Chen, C. P. Tso
Summary: This study investigates the impact of viscous dissipation on the heat dissipation performance of a microchannel heat sink in a parallel plate channel, showing that viscous dissipation reduces heat transfer coefficient and increases temperature gradient near the insulated boundary.
CASE STUDIES IN THERMAL ENGINEERING
(2021)
Article
Construction & Building Technology
Miriam Tawk, Yujie Qi, Buddhima Indraratna, Cholachat Rujikiatkamjorn, Ana Heitor
Summary: This study investigates a potential composite of coal wash and rubber crumbs as a capping material for railways, with a series of cyclic triaxial tests providing insight into the deformation mechanism of rubber particles. The inclusion of rubber crumbs is found to increase axial permanent strain and volumetric strain, while decreasing resilient and shear modulus. Moreover, the mixture with rubber crumbs shows improved energy dissipation efficiency after rest periods, reducing the breakage index even with increased load cycles.
JOURNAL OF MATERIALS IN CIVIL ENGINEERING
(2021)
Article
Mechanics
Yugui Cao, Longlong Li, Muyu Liu, Yufei Wu
Summary: The study found that under CFRP confinement, the compressive strength and ultimate strain of rubber concrete decrease with increasing rubber volume replacement ratio, while the stiffness of confinement also decreases with increasing rubber content.
COMPOSITE STRUCTURES
(2021)
Editorial Material
Physics, Fluids & Plasmas
Dhawal Buaria, Katepalli R. Sreenivasan
Summary: The study investigates the characteristics of passive scalars under a uniform mean gradient. The results indicate that at high Reynolds and Schmidt numbers, the statistics of scalar and velocity fluctuations behave similarly. However, previous data did not consider higher Schmidt numbers. By including these data, it is demonstrated that the differences between velocity and scalar statistics persist at all Reynolds and Schmidt numbers.
PHYSICAL REVIEW FLUIDS
(2023)
Article
Engineering, Mechanical
L. L. X. Augusto, M. H. Takahama, C. O. R. Negrao, T. Cousseau
Summary: This paper presents a numerical investigation of non-isothermal grease flow in labyrinth seals, considering the effects of heat transfer and viscous thermal dissipation on mechanical losses. The study found that heat transfer and viscous dissipation, which increase with shaft rotational speed, raise flow temperature, reducing grease viscosity and friction losses. Additionally, the influence of labyrinth materials (steel and polymer) on heat loss and viscous losses was analyzed, with polymer labyrinth showing higher temperature levels due to lower thermal conductivity.
TRIBOLOGY INTERNATIONAL
(2021)
Article
Thermodynamics
A. K. W. Loh, G. M. Chen, B. K. Lim
Summary: This study investigates the effects of viscous dissipation on the transport of Alumina-water nanofluids in an asymmetrically heated microchannel, taking into account Brownian motion and thermophoresis mechanism. It is found that viscous dissipation shifts the concentration and temperature distribution, leading to changes in thermal conductivity and viscosity. The increase in nanoparticle bulk concentration and the Brownian and Thermophoretic diffusivity ratio highlight the competition between enhanced thermal diffusion and hindered heat convection. Viscous dissipation also has a pronounced effect on particle migration and entropy generation.
CASE STUDIES IN THERMAL ENGINEERING
(2022)
Article
Chemistry, Physical
Xiaoyuan Zheng, Zhiying Ren, Liangliang Shen, Bin Zhang, Hongbai Bai
Summary: The LCDS has excellent stiffness and damping characteristics, and its performance can be effectively improved by changing material preparation and operating parameters. Vibration frequency has little effect on the damping performance of the LCDS, while MR matrix density and structural preload have a significant impact on damping performance.
Article
Chemistry, Multidisciplinary
Young Hun Ju, Jong Wan Hu
Summary: This study identified the compression characteristics of polyurethane springs as compression members of seismic devices and investigated the impact of design variables on their performance. The results showed that compressive stiffness and specimen size had a linear proportional relationship with maximum force, while design variables had no significant effect on recovered strain or energy dissipation. The study provides suggestions for developing a simple design formula for polyurethane springs.
APPLIED SCIENCES-BASEL
(2021)
Article
Engineering, Marine
Dan Yu, Keyi Wang, Hengxu Liu, Fankai Kong, Can Yang, Yupeng Duan, Hailong Chen
Summary: This study investigates the motion characteristics of AGWEC using CFD and potential flow theory. The results provide insights into the motion characteristics and parameter variations of AGWEC under different floating body spacing and wave frequencies.
Article
Engineering, Geological
Kazem Fakharian, Ali Ahmad
Summary: The study shows that adding granulated rubber decreases shear modulus and increases damping ratio of granulated rubber-sand mixtures, while also helping to reduce the degradation rate of shear modulus. Anisotropic consolidation has little effects on the variations of shear modulus and damping ratio of sand-rubber mixtures.
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2021)
Article
Thermodynamics
C. H. Hor, C. P. Tso, G. M. Chen
Summary: This study numerically investigates the temperature rise induced exclusively by viscous dissipation effect in synovial fluid, reaching a maximum of 2.8 degrees Celsius within 1 hour. It recommends inclusion of viscous dissipation effect in artificial hip joint model studies.
CASE STUDIES IN THERMAL ENGINEERING
(2021)
Article
Mechanics
Robert Keqi Luo
Summary: This paper proposes a new method for antivibration applications that fully considers the Mullins effect and measurable properties of rubber, and validates its accuracy and reliability through experiments.
MECHANICS OF TIME-DEPENDENT MATERIALS
(2021)
Article
Engineering, Mechanical
Gang Hu, Jianbo Ma, Guangjie Yuan, Kunrong Shen, Haoyu Wang
Summary: The tribological properties of hydrogenated nitrile butadiene rubber under different lubricated conditions were investigated, and the wear mechanisms and energy dissipation sources were identified.
TRIBOLOGY INTERNATIONAL
(2022)
Article
Energy & Fuels
Zahir Shah, Muhammad Rooman, Muhammad Asif Jan, Narcisa Vrinceanu, Wejdan Deebani, Meshal Shutaywi, Santiago Ferrandiz Bou
Summary: This study investigates the three-dimensional micropolar nanofluids of single and multi-walled carbon nanotubes dissolved in water and gasoline liquids for the first time. Results show that as the volume fraction increases, micro-rotational velocities also increase. Additionally, the impact of multi-walled CNTs is found to be more significant than that of single-walled CNTs.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2022)
Article
Energy & Fuels
Zahir Shah, Muhammad Rooman, Muhammad Asif Jan, Narcisa Vrinceanu, Wejdan Deebani, Meshal Shutaywi, Santiago Ferrandiz Bou
Summary: This article presents the first examination of three-dimensional micropolar nanofluids consisting of single and multi-walled carbon nanotubes dissolved in water and gasoline liquids. The study focuses on the classical Bodewadt flow and incorporates the Darcy-Forchheimer porous media. The energy equation, including convection, radiation, and viscous dissipation, is investigated. The flow field equations are transformed from partial differential equations to ordinary differential equations, and solutions are obtained using the bvp4c technique. Results show that an increase in volume fraction enhances micro-rotational velocities, and skin friction decreases with increasing porosity parameter and volume fraction. Multiple-walled CNTs have a more significant effect compared to single-walled CNTs, and gasoline oil exhibits a dominant trend when compared to water-based fluids.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2022)
Article
Mechanics
Zhiqiang Meng, Xu Gao, Hujie Yan, Mingchao Liu, Huijie Cao, Tie Mei, Chang Qing Chen
Summary: This paper presents a cage-shaped, self-folding mechanical metamaterial that exhibits multiple deformation modes and has tunable mechanical properties, providing multifunctional applications in various fields.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2024)
Article
Mechanics
Hasan Murat Oztemiz, Semsettin Temiz
Summary: Sandwich panel composites have various applications and their mechanical behavior and performance depend on material properties and geometry. The load-carrying capacity of S-core composite sandwich panels increases with the increase of the core wall thickness, but decreases with the increase of the core height.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2024)
Article
Mechanics
Yang Sun, Wei Zhang, Weipeng Hu, Mabao Liu
Summary: The study presents a novel computational framework to investigate the effect of graphene percolation network on the strength-ductility of graphene/metal composites. It utilizes the Cauchy's probabilistic model, the field fluctuation method, and the irreversible thermodynamics principle.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2024)
Article
Mechanics
Elaheh Kazemi-Khasragh, Juan P. Fernandez Blazquez, David Garoz Gomez, Carlos Gonzalez, Maciej Haranczyk
Summary: This study explores group interaction modelling (GIM) and machine learning (ML) approaches for predicting thermal and mechanical properties of polymers. ML approach offers more reliable predictions compared to GIM, which is highly dependent on the accuracy of input parameters.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2024)
Article
Mechanics
Yafei Yin, Shaotong Dong, Dong Wu, Min Li, Yuhang Li
Summary: This paper investigates a bending-induced instability in sandwiched composite structures, and establishes a phase diagram to predict its characteristics. The results are of great significance in understanding the physical mechanisms of bending instability and providing design guidelines for practical applications.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2024)
Article
Mechanics
Dhairya R. Vyas, Sharen J. Cummins, Gary W. Delaney, Murray Rudman, Devang V. Khakhar
Summary: In this study, multiple collisions of granules on a substrate are analyzed using Collisional Smooth Particle Hydrodynamics (CSPH) to understand the influence of impact-induced deformation on subsequent collision dynamics. It is found that the collision dynamics are dependent on the impact location and the deformation caused by preceding impacts. The accuracy of three theoretical models is also evaluated by comparing their predictions with CSPH results, and it is discovered that these models are only useful for predicting collisions at the same location repeatedly.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2024)
Article
Mechanics
Sneha B. Cheryala, Chandra S. Yerramalli
Summary: The effect of hybridization on the growth of interface crack along the fiber is predicted. The study shows an enhancement in the compressive splitting strength with hybridization due to the lateral confinement effect on the interfacial crack.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2024)
Article
Mechanics
Xiang-Nan Li, Xiao-Bao Zuo, Liang Li, Jing-Han Liu
Summary: A multiscale mechanical model is proposed to quantitatively describe the macro-mechanical behavior of fiber reinforced concrete (FRC) based on its multiscale material compositions. The model establishes the stiffness and strength equations for each scale of FRC and demonstrates the influence of steel fiber parameters on the mechanical properties of FRC.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2024)
Article
Mechanics
Vicente Ramirez-Luis, Hilario Hernandez-Moreno, Orlando Susarrey-Huerta
Summary: In this paper, a Multicell Thin-walled Method is developed for studying the stress distributions in multimaterial beams. This method accurately obtains complex stress fields while reducing the solution time and computational cost. Validation with the finite element method confirms the accuracy of the proposed method.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2024)
Article
Mechanics
Yanfeng Zheng, Siyuan Li, Jingyao Zhang, Yaozhi Luo
Summary: This study proposes an enhanced simplified model based on finite particle method (FPM) to consider the link cross-sectional size and contact in Bennett linkages. The model introduces virtual beams and contact forces to accurately simulate the real-world behavior of Bennett linkages. The proposed method is effective for dynamic analysis of large-scale deployable Bennett linkages and shows great potential.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2024)
Article
Mechanics
Viktoriya Pasternak, Heorhiy Sulym, Iaroslav M. Pasternak
Summary: This paper investigates anisotropic elastic, magnetoelectroelastic, and quasicrystal solids and presents their equations of time-harmonic motion and constitutive relations in a compact and unified form. A matrix approach is proposed to derive the 3D time-harmonic Green's functions for these materials. The effects of phason field dynamics on the phonon oscillations in quasicrystals are studied in detail. The paper provides a strict proof that the eigenvalues of the time-harmonic magnetoelectroelaticity problem are all positive. It also demonstrates the application of the obtained time-harmonic Green's functions in solving boundary value problems for these materials using the derived boundary integral equations.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2024)
Article
Mechanics
Jan Tomec, Gordan Jelenic
Summary: This paper investigates the relationship between different formulations and contact-force models in beam-to-beam contact mechanics. It specifically addresses the recently developed mortar method and develops its variant based on the penalty method. The developed elements are tested using the same examples to provide an objective comparison in terms of robustness and computational cost.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2024)
Article
Mechanics
Paulo Teixeira Goncalves, Albertino Arteiro, Nuno Rocha, Fermin Otero
Summary: This work presents a novel formulation of a 3D smeared crack model for unidirectional fiber-reinforced polymer composites based on a stress invariant approach for transverse yielding and failure initiation. The performance of the model is evaluated using monotonic and non-monotonic damage evolution, verified with single element tests and compared with experimental results.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2024)
Article
Mechanics
Hanbin Yin, Yinji Ma, Xue Feng
Summary: This paper investigates the peeling behavior of a viscoelastic film bonded to a rigid substrate and establishes a theoretical peeling model. The study reveals three typical relationships between the peeling force and peeling velocity, which depend on the viscous dissipation within the film and the rate-dependent adhesion at the interface. Additionally, factors such as film thickness, interfacial toughness, and interfacial strength are identified as influencing the steady-state peeling force.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2024)
Article
Mechanics
Peter Noe Poulsen, John Forbes Olesen
Summary: Finite Element Limit Analysis (FELA) is increasingly used to calculate the ultimate bearing capacity of structures made of ductile materials. This study presents a consistent and general weak formulation based on virtual work for both the lower and upper bound problem, ensuring uniqueness of the optimal solution. A plane element with linear stress variation and quadratic displacement field is introduced, showing good results for load level, stress distribution, and collapse mechanism even for coarse meshes in verification and reinforced concrete examples.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2024)