Semnan University PressMechanics of Advanced Composite Structures2423-482614120270401Nonlinear Behavior of Honeycomb Structure Under Large Deformations Using Absolute Nodal Coordinate Formulation and Periodic Homogenization1171040010.22075/macs.2026.37196.1820ENHosseinRanjbarzadehCenter of Research for Composite and Smart Materials and Structures, Faculty of Mechanical Engineering, K. N. Toosi University of Technology, Tehran, IranSeyed Mohammad RezaKhaliliCenter of Research for Composite and Smart Materials and Structures, Faculty of Mechanical Engineering, K. N. Toosi University of Technology, Tehran, Iran0000-0001-8810-5410Seyed HosseinSadatiCenter of Research for Composite and Smart Materials and Structures, Faculty of Mechanical Engineering, K. N. Toosi University of Technology, Tehran, IranJournal Article20250318This study determines the elastic constants and evaluates the in-plane mechanical behavior of hexagonal and re-entrant (auxetic) honeycomb structures under large deformations by utilizing the Absolute Nodal Coordinate Formulation (ANCF) for modeling elastic forces and applying periodic boundary conditions (PBCs) to precisely control deformations at the boundaries. A representative volume element (RVE) was selected, and static equations were derived by modeling cell walls as beam elements using the ANCF based on the finite element method (FEM) and the periodic boundary conditions were subsequently implemented. After solving the static equations, analytical validation was performed for small deformations. The results demonstrate that honeycomb structures exhibit nonlinear behavior under large deformations, which is crucial to determine for dynamic applications. In addition, the proposed model provides an effective technique for determining elastic constants and evaluating the mechanical behavior of honeycomb structures under large deformations, with applicability to various cellular geometries and piezoelectric cell structures.https://macs.semnan.ac.ir/article_10400_b14fb6514ac08780bde2c525583a6f32.pdfSemnan University PressMechanics of Advanced Composite Structures2423-482614120270401Investigation of the Mechanical and Tribological Behaviour of Al Alloy and Al/ZrO2Ex-Situ Nano Composites19261039910.22075/macs.2026.37138.1824ENBhavanaSinghDepartment of Mechanical Engineering, SET IFTM UNIVERSITY, Moradabad, 244001, India0000-0003-0917-4157VaibhavTrivediDepartment of Mechanical Engineering, SET IFTM UNIVERSITY, Moradabad, 244001, IndiaAnkurGoelOrthopedic, Sri sai super specialityHospital, Moradabad, 244001, IndiaJournal Article20250320The present study investigates the mechanical and tribological behaviour of Al alloys and Al/ZrO₂ ex-situ composites, focusing on their microstructural evolution and property enhancement. Al/ZrO₂ composites were synthesised using stir casting, incorporating 1, 3, and 5 wt.% ZrO₂ particles. Alloys and composites were characterizedusing X-ray diffraction (XRD), optical microscope (OM), and scanning electron microscopy (SEM)to analyse phase formation, particle distribution. Microstructural analysis revealed homogeneous dispersion of ZrO₂ particles, promoting load transfer and matrix strengthening. Mechanical properties were analysed using Vickers microhardness and uniaxial tensile tests, demonstrating substantial increases in hardness and tensile strength with increasing ZrO₂ content due to grain refinement, dislocation strengthening, and Orowan strengthening mechanisms. Tribological performance was evaluated using a pin-on-disc apparatus under varying loads (10N- 30N) and sliding speeds (1 m/sec -3 m/sec). The Al/ZrO₂ composites exhibited a significant reduction in the wear (up to 50%) compared to the unreinforced alloy, attributed to the load-bearing capacity of ZrO₂ particles and the formation of a protective tribolayer. Surface morphology of the worn samples, analysed using SEM, indicated a transition from abrasive to mild adhesive wear with the addition of ZrO₂. Further topographical parameters were studied using atomic force microscopy (AFM), which suggests a decrease in surface roughness from 0.87 µm to 0.70 µm at3wt. % of ZrO<sub>2</sub> compared to the base alloy.https://macs.semnan.ac.ir/article_10399_17b59308979f035f0da44a550b46dd8a.pdfSemnan University PressMechanics of Advanced Composite Structures2423-4826141202704012D Bond-Based Peridynamic Simulation of Phase Transformation in 3Y-TZP Dental Ceramics Using ABAQUS27391050810.22075/macs.2026.35720.1751ENAlirezaMoradkhaniDepartment of Mechanical Engineering, Shahid Rajaee Teacher Training University, Tehran, 1678815811, IranMohammadHoseinpour GolloDepartment of Mechanical Engineering, Shahid Rajaee Teacher Training University, Tehran, 1678815811, Iran0000-0003-4633-1318CarlaCastiglia GonzagaSchool of Health Sciences, Graduate Program in Dentistry, Universidade Positivo, Curitiba, PR, 81280-330, BrazilJournal Article20241023In this research, the fracture behavior of 3 mol% yttria-stabilized tetragonal zirconia polycrystals (3Y-TZP) dental ceramics is investigated. The focus is on the tetragonal (<em>t</em>) to monoclinic (<em>m</em>) phase transformation using ABAQUS and bond-based peridynamics. We conducted two-dimensional simulations of a single grain undergoing uniform dilational expansion within a homogeneous <em>m</em>-phase environment. The effects of transformation time, biaxial stress, and strains on fracture were analyzed. It was found that increasing stress in the surrounding <em>t</em>-phase elevated the elastic strain energy associated with the transformation. By varying stress from -1.1 GPa to 400 MPa, elastic strain energy started to decrease from 3.41, 3.32, 3.11, and 2.85 pJ at fracture strain values of <em>S</em><sub>0</sub>= 0.00711, 0.00553, 0.00395, and 0.00237, respectively. These correspond to reductions of 83%, 87%, 90%, and 96%. In addition, damage fractions increased from 0.001, 0.002, 0.003, and 0.004 to 0.005, 0.011, 0.022, and 0.058, respectively. This demonstrates the significant impact of applied stress on the fracture mechanics of 3Y-TZP. Moreover, increasing the elemental parameter <em>S</em><sub>0</sub> from 0.00237 to 0.00711 in the simulations corresponds to a considerable decrease in defect density, resulting in a substantial increase in the total energy required for material division from 0.25 to 2.2 J/m<sup>2</sup>.https://macs.semnan.ac.ir/article_10508_62586771d3229bff8eae64a469aa77f3.pdfSemnan University PressMechanics of Advanced Composite Structures2423-482614120270401Experimental Study of Woven Glass, Bamboo, and Jute Fibre Reinforced in Epoxy Composites41561027810.22075/macs.2025.37201.1821ENPraveenKumar Shivamadaiah ParvathammaDepartment of Mechanical Engineering, RajaRajeswari College of Engineering, VTU, Bengaluru, 560074, IndiaRadhakrishna RajashekharKumshikarDepartment of Mechanical Engineering, RajaRajeswari College of Engineering, VTU, Bengaluru, 560074, IndiaAnandAdeppaDepartment of Aeronautical Engineering, ACS College of Engineering, VTU, Bengaluru, 560074, IndiaThanujKumar MuniswamyDepartment of Mechanical Engineering, RajaRajeswari College of Engineering, VTU, Bengaluru, 560074, IndiaSangashettyShantappa GurbasappaDepartment of Mechanical Engineering, RajaRajeswari College of Engineering, VTU, Bengaluru, 560074, IndiaJournal Article20250319Industries like aerospace, automotive, marine, and transportation require materials that are lightweight yet strong, durable, and impact-resistant. To meet these demands, advanced composite materials are being developed using natural fibres such as bamboo and jute, which are eco-friendly, abundant, and cost-effective. When combined with synthetic fibres like glass, known for its heat resistance and interfacial strength, the mechanical properties of these composites improve significantly. Fabricated using the hand lay-up method with a 70% epoxy and 30% fibre ratio, these materials were tested per ASTM standards. Studies have shown that hybrid composites reinforced with bamboo, jute, and glass fibres offer enhanced tensile, flexural, hardness, and impact strength. The S1 stacking sequence performed best, with a tensile strength of 95 MPa, modulus of 1028MPa, flexural strength of 195 MPa and modulus 54 GPa, impact toughness of 12 J/mm, hardness of 87 RHN, and thermal conductivity of 0.26 W/m·K. These composites are lightweight, strong, and thermally efficient, making them ideal for rail, power, automotive, marine, and aerospace applications.https://macs.semnan.ac.ir/article_10278_e990cf6688a9dde5935919d9b04056a9.pdf