Most papers are machine-translated to English; some are originally in English.
Showing 43 of 43 papers in Mechanics
To clarify the existence of foliation fractures (including bedding fractures) under formation conditions in tectonically stable areas of sedimentary basins, reveal the differences between fractures observed in surface cores and real subsurface fracture systems, and guide the exploration of shale-typ…
Objective: To investigate the application effects of the Pro-kin balance system combined with isokinetic closed-chain training on functional recovery and knee joint biomechanics in male basketball players after anterior cruciate ligament (ACL) reconstruction. Methods: A total of 588 male basketball …
To investigate the response characteristics of different parts of the head under whole-body vibration environments, a full-body finite element model with detailed skeletal and muscular soft tissues was developed. The first-order vertical resonance frequency and head-to-seat vibration transmissibilit…
Research Results and Analysis Objective: To analyze the biomechanical characteristics of single-leg standing and single-leg landing in the dominant and non-dominant legs of volleyball players, and to explore the differences in dynamic and static balance abilities between the dominant and non-dominan…
Piezoelectric materials can be used to harvest ocean wave energy by directly converting wave energy into electrical energy. Combining piezoelectric membranes with flexible membranes to form a submerged breakwater structure can serve as a new type of wave energy conversion device, possessing the dual…
The dispersion and polarization characteristics of Scholte waves excited by sound sources in shallow water are of great significance for target detection; however, current understanding of Scholte waves excited by pulsed and continuous point sources remains insufficient. This study investigates the …
The Euler equations represent a typical class of nonlinear hyperbolic conservation laws, the solutions of which may contain discontinuities. This characteristic makes high-order numerical schemes prone to non-physical oscillations near discontinuities when solving the Euler equations. Based on the c…
Thermal stratification is one of the primary causes of thermal fatigue failure in the piping systems of pressurized water reactors (PWRs). This study aims to investigate the transient thermal distribution characteristics of piping structures caused by thermal stratification in reactor configurations…
The core components of High-Temperature Gas-cooled Reactors (HTGRs) are primarily composed of graphite materials. Under high temperature and irradiation, the mechanical properties of graphite materials undergo changes, which ultimately affect the load-bearing capacity of the core components. Therefo…
To address the challenges of high difficulty and low efficiency in traditional 3D mesoscale concrete numerical models, which hinder their application, a frictional debonding failure method for 3D models is adopted. This approach avoids the complexity of traditionally establishing physical transition…
Based on equivalent homogenization theory, a multi-scale simulation study was conducted to investigate the influence of mesoscopic aggregate factors on the mechanical behavior of reinforced concrete (RC) columns under eccentric compression. This was achieved by establishing both mesoscopic numerical…
To improve the prediction accuracy of the performance of short fiber-reinforced rubber composites (SFRCs), and considering that most fibers within these composites exhibit a random wavy shape, a discretization modeling method was employed to establish a two-dimensional representative volume element …
To investigate the shear performance of fully grouted prestressed anchors against shear-slip bodies, a method for calculating the minimum required support resistance of a slip body is proposed based on shear-slip theory. The neutral point position and support force calculation methods for fully grou…
To satisfy the requirements for structural lightweighting and energy absorption, superior energy-absorbing box structures were designed and investigated. The quasi-static axial compression behavior of tapered energy-absorbing boxes filled with functionally graded aluminum foam was simulated, and a l…
Thin-walled structures are widely utilized in fields such as transportation due to their advantages of light weight, low manufacturing cost, and high energy absorption efficiency. To improve the energy absorption performance of traditional straight tubes and corrugated tubes, a tapered thin-walled t…
To investigate the free vibration and dynamic response of metal/ceramic functionally graded plates with internal porosity in fluid, the fluid velocity potential function and hydrodynamic pressure were calculated based on three types of plate-fluid interaction boundary conditions. A calculation model…
Existing research has found that micro-textures help reduce friction and vibration in gear systems. To analyze the dynamic performance of micro-textured gears, their meshing stiffness is investigated. In this study, bionic tooth surface textures were designed by simulating shark skin surface texture…
Cold-formed thin-walled members are highly susceptible to the effects of interaction between multiple instability modes. Research on the mechanical mechanisms of interaction buckling for members with different cross-sectional shapes and material types urgently needs improvement and development. An a…
Objective To investigate the effects of plyometric training on lower limb explosive power, agility qualities, and other sport-specific attributes of volleyball players, and to provide scientific methods for volleyball training. Methods Thirty volleyball players were randomly selected and divided int…
A comparative analysis was conducted on the mechanical properties of knee joint cartilage tissues (meniscus, femoral cartilage, tibial cartilage) between the unaffected side of stroke patients and the corresponding side of healthy individuals. Complete knee joint finite element models were establish…
Objective To investigate the effects of different running speeds on lower limb kinematics, kinetics, and plantar pressure distribution in male athletes. Methods Fifteen physical education students from a university's sports institute were selected and divided into three groups based on treadmill spe…
The hydrodynamics of flow around pile groups beneath pile-supported wharfs is more complex than that of single-pile structures and exerts significant influence on harbor hydrodynamics and sediment transport. To investigate the underlying interaction mechanisms, a laminar flow model based on the CFD …
Currently, water hammer numerical models commonly employed in hydraulic engineering often neglect the influence of cavitation induced by negative pressure, with most friction models still utilizing steady friction models, namely the Darcy-Weisbach formula, resulting in simulation results that undere…
The significant differences in shrinkage and creep characteristics between ultra-high performance concrete (UHPC) and normal concrete (NC) lead to markedly distinct long-term deflection growth in steel-UHPC composite beams versus steel-NC composite beams. To scientifically and rationally calculate t…
The energy method is favored by researchers because it avoids the complex intermediate stress analysis of instability failure in spatial steel structures. Large-span spatial steel structures represent a critical structural form in engineering. Due to their numerous degrees of freedom and the complex…
To clarify the time-dependent evolution of pile-soil interaction and the variation law of negative skin friction for pile foundations in high loess fill sites, and to elucidate the influence of internal force variation on the long-term service performance of pile foundations, considering the creep d…
Addressing the issue that existing slope deformation predictions rarely consider the spatial variability of soil property parameters, this paper proposes a stochastic deformation prediction method for high fill slopes. By analyzing the one-dimensional consolidation creep characteristics of loess, a …
The designability of compressive modulus and plateau stress, along with the tunability of compressive mechanical properties, constitute key challenges in enhancing the applicability of porous materials. The design methodology for ordered porous-based interpenetrating phase composites represents an e…
Focusing on shock wave boundary layer interaction phenomena in inlet isolators, this study systematically compares the capabilities of shock relation method, Euler method, RANS method, DDES method, etc., in predicting shock train structures and wall fluctuating pressure, and conducts back-to-back va…
To investigate the effects of plyometric training on lower limb biomechanics and explosive power in male college basketball players, and to provide a theoretical basis for optimizing basketball-specific training. Eighteen male college basketball players were selected and randomly divided into an exp…
Objective To investigate the stress and strain distribution characteristics of the anterior cruciate ligament (ACL) of the left leg in volleyball players at the instant of landing after a spike, using a musculoskeletal-finite element (MS-FE) model. Methods A finite element model (FEM) of the knee jo…
Linear vibrating screens and translational elliptical vibrating screens represent two developmental forms of drilling fluid vibrating screens. Investigating the screening efficiency of these two vibration modes under different operating parameters holds value and significance for practical productio…
Mesh is the foundation of computational fluid dynamics (CFD) numerical simulation. To investigate the applicability of different mesh types to gas dispersion simulation in chemical industrial parks, full-scale numerical simulations were carried out based on field leakage experiments of tracer gas (S…
Rectangular frame-type artificial reefs can be employed to modify flow fields, providing favorable habitats for various marine organisms. In tropical marine areas such as the offshore waters of Hainan Island, they can also serve as attachment substrates for coral restoration. Flow velocities at repr…
To improve the accuracy of damage identification, the concept of reciprocal variables is introduced, and a truss damage identification method combining reciprocal variables with the generalized flexibility matrix is proposed. This method requires only low-order modal parameters. For cases of incompl…
The free vibration characteristics of functionally graded thin elliptical cylindrical shells are investigated based on the absolute nodal coordinate formulation (ANCF). Third-order Bézier curve fitting technique is employed to calculate the initial circumferential tangent vector and circumferential …
To achieve industrialized production and rapid construction of reinforced concrete wall panels, a fully bolted connection technology utilizing boot-shaped embedded parts is proposed. Horizontal pushover tests were conducted to investigate the failure modes, stress distribution, and mechanical behavi…
To further investigate the mechanical characteristics of overconsolidated unsaturated cohesive soil and to verify the proposed three-shear subloading surface model for overconsolidated unsaturated cohesive soil through true triaxial numerical tests, Jiangxi laterite was selected as the research obje…
Based on the simplification of the cylindrical axisymmetric problem and the favorable properties of modified Bessel functions, a displacement harmonic function containing undetermined functions was constructed. Applying the constructed displacement harmonic function, stress expressions containing un…
Negative Poisson's ratio metamaterials, also known as "auxetic" metamaterials, represent a class of mechanical metamaterials with unique mechanical properties: under vertical compressive (tensile) loading, the structure undergoes lateral contraction (expansion). This characteristic is closely relate…
Hyperelastic materials exhibit excellent mechanical properties and have been widely applied in engineering. To accurately calculate the large deformation response of hyperelastic materials, this study reviews eight commonly used macroscopic hyperelastic constitutive models and presents fitting metho…
In mechanical structures, common energy principles are typically formulated for fixed loads. However, in engineering structures such as bridges, it is often necessary to adjust loads to achieve reasonable internal forces and material savings. Nevertheless, theoretical research in this area remains l…
This work aims to identify models capable of describing size effects on the modulus and hardness of polymers as measured by indentation testing. First, elastic size effects are described through a model developed by introducing an elastic unloading load model that incorporates couple-stress elastici…
