Contact analysis
View article
Transmission Performance Analysis of RV Reducers Influenced by Profile Modification and Load Open
RV reducers contain multi-tooth contact characteristics, with high-impact resistance and a small backlash, and are widely used in precision transmissions, such as robot joints. The main parameters affecting the transmission performance inc…
View article
Dynamics Analysis of Wheel Rail Contact Using FEA Open
A rail wheel contact mechanism has been a keen interest area for railway engineers. The present study focuses on the influence of interacting wheel and rail profile topology. A standard rail UIC 60 and standard wheel profile, as per the st…
View article
Advanced numerical analyses by the Non‐Smooth Contact Dynamics method of an ancient masonry bell tower Open
Advanced numerical analyses were carried out in order to assess the nonlinear dynamical behaviour of the bell tower of Pomposa Abbey in Codigoro, in the province of Ferrara (Italy), by means of the Non‐Smooth Contact Dynamics (NSCD) method…
View article
Study on contact fatigue of a wind turbine gear pair considering surface roughness Open
Contact fatigue issues become more and more crucial in gear industry as they significantly affect the reliability and service life of associated mechanical systems such as wind turbine gearboxes. The contact fatigue behavior is mostly dete…
View article
An improved numerical method for the mesh stiffness calculation of spur gears with asymmetric teeth on dynamic load analysis Open
Gears are one of the most crucial parts of power transmission systems in various industrial applications. Recently, there emerged a need to design gear drivers due to the rising performance requirements of various power transmission applic…
View article
A study on loaded tooth contact analysis of a cycloid planetary gear reducer considering friction and bearing roller stiffness Open
The cycloid planetary gear drives designed in the so-called RV-type play an important role in precision power transmission. Not only the high reduction ratio, but also the shock absorbability is the significant advantage. However, the load…
View article
Analysis of the evolvement of contact wire wear irregularity in railway catenary based on historical data Open
This paper studies the evolvement of the wear irregularity of contact wire using wire thickness data measured yearly from a section of railway catenary. The power spectral density and time–frequency representation based on the wavelet tran…
View article
Analysis of Continuous and Discontinuous Cases of a Contact Problem Using Analytical Method and FEM Open
In this paper, continuous and discontinuous cases of a contact problem for two elastic layers supported by a Winkler foundation are analyzed using both analytical method and finite element method. In the analyses, it is assumed that all su…
View article
Quantification of the Contact Area at the Head-Stem Taper Interface of Modular Hip Prostheses Open
Corrosion of modular taper junctions of hip implants may be associated with clinical failure. Taper design parameters, as well as the intraoperatively applied assembly forces, have been proposed to affect corrosion. Fretting corrosion is r…
View article
Mathematical model and tooth contact analysis of convexo-concave helical bevel Novikov gear mesh Open
This paper presents a mathematical model of convexo-concave helical bevel Novikov gear mesh. The usefulness of the designed mathematical model for tooth contact analysis was demonstrated. Moreover, a number of simulations were carried out …
View article
Method for remanufacturing large-sized skew bevel gears using CNC machining center Open
A method for remanufacturing pinion member of large-sized skew bevel gears using a CNC machining center and respecting an existing gear member is proposed. For this study, first the tooth surface forms of skew bevel gears are modeled mathe…
View article
Rolling contact fatigue analysis of rails under the influence of residual stresses induced by manufacturing Open
This study aims to analyze the rolling contact fatigue influenced by residual stresses caused by the contact of the wheel and rail and its manufacturing process. For this purpose, a rail available in Iran railway is used with an exact prof…
View article
Analytical Solution for Interference Fit for Multi-Layer Thick-Walled Cylinders and the Application in Crankshaft Bearing Design Open
Interference fit is an important contact mode used for torque transmission existing widely in engineering design. To prevent trackslip, a certain magnitude of interference has to be ensured; meanwhile, the interference needs to be controll…
View article
Numerical methods for contact analysis of complex-shaped bodies with account for non-linear interface layers Open
In order to ensure high technical characteristics of machines for various applications, it is necessary to increase the strength of the most loaded and heavy-duty elements of constructions, which are complex-shaped components under intense…
View article
Computational flow analysis with boundary layer and contact representation: I. Tire aerodynamics with road contact Open
In computational flow analysis with moving solid surfaces and contact between the solid surfaces, it is a challenge to represent the boundary layers with an accuracy attributed to moving-mesh methods and to represent the contact without le…
View article
Isogeometric treatment of large deformation contact and debonding problems with T-splines: a review Open
Within a setting where the isogeometric analysis (IGA) has been successful at bringing two different research fields together, i.e. Computer Aided Design (CAD) and numerical analysis, T-spline IGA is applied in this work to frictionless co…
View article
Three-dimensional finite analysis of acetabular contact pressure and contact area during normal walking Open
The zones of increased contact pressure and the distributions of acetabular contact areas had important significance towards clinical researches, and could indicate the inductive factors of acetabular osteoarthritis.
View article
Innovative tooth contact analysis with non-uniform rational b-spline surfaces Open
More and more simulation tools are being used in the development of gears in order to save development time and costs while improving the gears. BECAL is a comprehensive software tool for the tooth contact analysis (TCA) of bevel, hypoid, …
View article
Investigation of the effect of contact pattern design on the mechanical and thermal behaviors of plastic‐steel helical gear drives Open
This article describes an investigation that has been conducted to assess the effects of the contact pattern design on the mechanical and thermal behaviors of plastic-steel helical gear drives. The maximum contact pressure, frictional powe…
View article
A Combined Geometric Morphometric and Discrete Element Modeling Approach for Hip Cartilage Contact Mechanics Open
Finite element analysis (FEA) provides the current reference standard for numerical simulation of hip cartilage contact mechanics. Unfortunately, the development of subject-specific FEA models is a laborious process. Owed to its simplicity…
View article
A Semi-Analytical Load Distribution Model for Cycloid Drives with Tooth Profile and Longitudinal Modifications Open
The current load distribution model for cycloid drives based on the Hertz contact stiffness typically assumes a two-dimensional planar problem without considering the tooth longitudinal modification effects, which fails to comply with the …
View article
Analytical modeling of complex contact behavior between rock mass and lining structure Open
Based on the nondestructive test data of operating railway tunnels in China, this paper summarizes the basic characteristics of the complex contact behavior between the rock mass and lining structure. The contact modes are classified into …
View article
Implementation of a Finite Element Model for Gear Stress Analysis Based on Tie-Surface Constraints and Its Validation Through the Hertz's Theory Open
A new finite element model for stress analysis of gear drives is proposed. Tie-surface constraints are applied at each tooth of the gear model to obtain meshes that can be independently defined: a finer mesh at contact surfaces and fillet …
View article
A method for estimating the contact area of a dual-mobility total hip prosthesis Open
The term “contact area” refers to the total surface area of two entities in direct physical touch. When discussing an artificial hip joint, “contact area” refers to the surface area of contact between the components of the artificial hip j…
View article
Design and Load Distribution Analysis of the Mismatched Cycloid-Pin Gear Pair in RV Speed Reducers Open
The current loaded tooth contact analysis of cycloid drives based on the assumption of theoretical positions of ring pins ignores the deviations caused by manufacturing errors and elastic deformations, which are not in agreement with reali…
View article
Effect of wheel–rail interface parameters on contact stability in explicit finite element analysis Open
It is widely recognized that the accuracy of explicit finite element simulations is sensitive to the choice of interface parameters (i.e. contact stiffness/damping, mesh generation, etc.) and time step sizes. Yet, the effect of these inter…
View article
Nonlinear Dynamic Modelling and Analysis of Gear System with Tooth Contact Temperature Open
摘要: 为研究齿轮啮合过程中齿面接触温度对系统动力学的影响,基于Block闪温理论,计算主、从动轮的齿面闪温,推导齿面接触温度随时间变化的表达式,计算由齿面接触温度变化导致的齿廓形变;通过Hertz接触理论,推导随齿面接触温度变化的啮合刚度的表达式。建立综合考虑齿面接触温度、时变啮合刚度、齿面摩擦、齿侧间隙、综合啮合误差等因素的单级直齿圆柱齿轮系统非线性动力学模型。对该模型进行研究,分析摩擦因数、载荷对齿面闪温的影响及系统的动力学特性。计算结果显示,齿面闪温在齿根和齿顶啮合…
View article
Geometry and design of spur gear drive associated with low sliding ratio Open
The relative sliding between tooth surfaces is the main cause of tooth wear and power loss, which directly affects the transmission efficiency and durability of gear. The aim of this paper is to provide a method to design such spur gear wi…
View article
Finite element analysis and experimental study on contact pressure of hydraulic support bud-shaped composite sealing ring Open
By the fluid dynamics theory analysis of the sealing interface, the importance of sealing contact pressure research for sealing performance is discussed. By experiments and data analysis for nitrile rubber buna and polyurethane, Mooney–Riv…
View article
Fractal Contact Mechanics Model for the Rough Surface of a Beveloid Gear with Elliptical Asperities Open
Understanding the contact mechanics of rough tooth surfaces is critical in order to understand phenomena such as tooth surface flash temperature, tooth surface wear, and gear vibration. In this paper, the contact behavior between the meshi…