Ivan Breslavsky^1,*, Giulio Franchini², Francesco Giovanniello³, Ali Kassab^3,4, Gerhard A. Holzapfel^5,6, Marco Amabili^1,3

The International Conference on Computational & Experimental Engineering and Sciences, Vol.34, No.1, pp. 1-1, 2025, DOI:10.32604/icces.2025.012190

Abstract Despite the critical role of vascular smooth muscle (VSM) activation in the biomechanics of human aortas, comprehensive experimental data and corresponding active material models remain limited. This study addresses this gap by presenting a detailed mechanical characterisation of human descending thoracic aortas under both passive and VSM-activated conditions.
Specimens were obtained from thirteen heart-beating donors. Mechanical testing was conducted within hours of explantation. VSM activation was induced using potassium chloride and noradrenaline, and both isometric and quasistatic stress–strain responses were measured in circumferential and longitudinal tissue strips.
Dynamic mechanical testing under physiologically relevant cyclic loading and More >

Xuhui Lou¹, Xu Hou², Jie Wang³, Xiaobao Tian^1,*

The International Conference on Computational & Experimental Engineering and Sciences, Vol.34, No.1, pp. 1-1, 2025, DOI:10.32604/icces.2025.011045

Abstract Grain boundaries (GBs) are transitional, defective, and anisotropic interfaces between adjacent grains with different orientations. However, most models assume that the GB is an isotropic dielectric determined by itself and lacks formation information; these assumptions hinder the theoretical investigation of the effect GBs have on polycrystalline ferroelectrics at the mesoscopic scale. Here, a novel GB model based on the formation mechanism is established for ferroelectric polycrystals. It has been found that the Curie-Weiss temperature range, elastic coefficient, and permittivity of GBs are related to the orientation of adjacent grains and the polarization state. The shielding More >

Yingxin Zhang^1,2, Shuai Mo^1,2,*

The International Conference on Computational & Experimental Engineering and Sciences, Vol.34, No.1, pp. 1-1, 2025, DOI:10.32604/icces.2025.011038

Abstract To accurately describe the dynamic behavior of a gear-rotor-bearing system, it is essential to consider the interplay between thermal effects and dynamics. Therefore, this study develops a real-time coupling model that integrates thermal and dynamic aspects of the gear-rotor-bearing system, which captures the combined effects of various nonlinear factors, including dynamic clearances caused by thermal deformation, thermoelastic coupling stiffness, non-uniform load distribution in bearings, and multi-meshing state of gear. Building on this model, the study introduces a stepwise coupled thermodynamic and dynamic joint solution method, which is used to evaluate the effects of thermal influences More >

Rui Yang^*

The International Conference on Computational & Experimental Engineering and Sciences, Vol.34, No.1, pp. 1-1, 2025, DOI:10.32604/icces.2025.010698

Abstract This study employs molecular dynamics (MD) simulations to comparatively investigate the mechanical enhancement mechanisms of glass fiber-reinforced concrete (GFRC) and basalt fiber-reinforced concrete (BFRC). Amorphous models of glass fiber (GF) and basalt fiber (BF), along with calcium silicate hydrate (C-S-H), were constructed using the ClayFF force field in LAMMPS. The interfacial transition zone (ITZ), atomic bonding characteristics, stress distribution, and tensile failure processes were systematically analyzed. Key findings reveal that BF exhibits a denser atomic network structure with higher coordination numbers, driven by the bridging role of Fe and Mg atoms. BFRC demonstrates significantly stronger More >

Shuoting Xiao^1,*, Nikita Igorevich Fomin¹, Kirill Anatolyevich Khvostunkov², Chong Liu¹

CMES-Computer Modeling in Engineering & Sciences, Vol.145, No.3, pp. 2821-2847, 2025, DOI:10.32604/cmes.2025.071961 - 23 December 2025

Abstract Precast concrete structures have gained popularity due to their advantages. However, the seismic performance of their connection joints remains an area of ongoing research and improvement. Grouted Sleeve Connection (GSC) offers a solution for connecting reinforcements in precast components, but their vulnerability to internal defects, such as construction errors and material variability, can significantly impact performance. This article presents a finite element analysis (FEA) to evaluate the impact of internal grouting defects in GSC on the structural performance of precast reinforced concrete columns. Four finite element models representing GSC with varying degrees of defects were… More > Graphic Abstract

Q. N. Gao^a, H. L. Zhang^a, Z. H. Dong^a, Y. J. Liu^b, N. N. Zhou^a, P. P. Zhang^a, J. Wang^c,*

Chalcogenide Letters, Vol.22, No.3, pp. 205-221, 2025, DOI:10.15251/CL.2025.223.205

Abstract The structural, mechanical, electronic, and thermodynamic properties of CuC_xSnC_1-xTe (x = 0, 0.03125, 0.0625, 0.125, and 0.25) are investigated through first-principles calculations. The studied structures are all cubic and own negative enthalpy of formation. The elastic constants and mechanical properties (B, G, E and ν) are predicted. The bandgap of SnTe evaluated by HSE06 is 0.25 eV, closing to the experimental data 0.19 eV. All studied Cu-doped compounds behave metallic. In addition, the thermodynamic properties (G, H, S, C_P, and CC_V) of the materials, together with the bulk modulus and thermal expansion coefficient versus temperature have been More >

A. Ledesma-Juárez^a, J. F. Quintero-Guerrero^b, A. M. Fernández^a,*

Chalcogenide Letters, Vol.22, No.2, pp. 97-108, 2025, DOI:10.15251/CL.2025.222.97

Abstract The evaporation technique fabricates solar cells using the Cu(In, Ga)Se₂ (CIGS) absorber. This technique has strong limitations in preparing this absorber in a large area, necessitating the electrodeposition technique. However, the morphology and crystallinity of this absorber need to be sufficiently adequate to guarantee proper collection of charge carriers since a cauliflower-type growth is favored. This underscores the need for modifications during the synthesis, thermal treatments, and post-synthesis to improve the morphology and crystallinity, a complex and significant aspect of our research. This work discusses the structural, atomic composition, morphological, and optical results obtained for samples More >

A. X. Yang^a, L. F. Huang^b,*, Y. Y. Liu^c

Chalcogenide Letters, Vol.22, No.7, pp. 649-663, 2025, DOI:10.15251/CL.2025.227.649

Abstract An innovative flexible electronic device was developed by integrating functionalized carbon nanotubes, bismuth sulfide nanostructures, and a polyvinylidene fluoride matrix to create a highly water‐resistant strain detection platform. The fabricated film exhibited a remarkable static water contact angle of 141°, with only a 3–4° reduction after 48 hours of immersion, confirming its excellent hydrophobic performance. Mechanical testing revealed a tensile strength of 43.2 MPa and maintained over 96% of its original strength following 1000 bending cycles, thereby demonstrating outstanding durability under repetitive deformation. Electrical characterization showed an initial conductivity of 12.3 S/m and a baseline resistance near… More >

H. J. Hou^a,*, J. X. Bian^a, K. J. Liu^b, W. X. Chen^a, X. W. Lu^a, S. R. Zhang^c

Chalcogenide Letters, Vol.22, No.7, pp. 579-591, 2025, DOI:10.15251/CL.2025.227.579

Abstract Utilizing first-principles method, the structural and anisotropic characteristics of BaGa₄S₇ has been meticulously investigated. The determined lattice parameters and elastic moduli exhibit a high degree of correlation with previously documented data. Based on its mechanical properties, BaGa₄S₇ demonstrates ductility and anisotropy. The anisotropic properties can be examined through a range of metrics. More >

T. J. Li^a,*, Y. Yue^a, L. P. Qu^a, H. J. Hou^b, S. H. Fan^b, H. L. Guo^c, S. R. Zhang^d

Chalcogenide Letters, Vol.22, No.10, pp. 917-927, 2025, DOI:10.15251/CL.2025.2210.917

Abstract The material AgAlSe₂, which adopts a chalcopyrite crystal structure, has attracted significant attention owing to its promising functional properties. To further explore its characteristics, theoretical method was conducted to explore its elastic behavior, electronic structure, dynamic stability, and thermodynamic features. The lattice parameters and elastic constants obtained through simulation agrees well with the reported data. Additionally, the mechanical stability of AgAlSe₂ was assessed through its elastic constants, confirming its structural integrity. Electronic property analysis reveals that AgAlSe₂ exhibits semiconducting behavior, featuring a direct band gap of approximately 1.1377 eV. More >