According to the characteristics of the concrete fracture process zone, a damage and fracture model for concrete, which combines damage mechanics and fracture mechanics is proposed. This model takes the initial fracture damage threshold as the incipient cracking criterion, and takes the unstable fracture...

Based on the vibration dynamics modeling for the single stage gear of transmission system, this paper is to understand the mechanism of transmission rattle. The dynamic model response using MATLAB and Runge-Kutta algorithm is analyzed, and the ways for reducing the rattle noise of the automotive transmission...

This paper aims to study the resistance performance of a medium speed ship, the steady-state Reynolds-averaged Navier-Stokes (RANS) simulations are performed by utilizing a commercial CFD software package named Fluent. With the increasing of the ship's speed, the navigation attitude changes significantly...

How to choose the turning parameters for shaft part? This paper established an optimization model based on minimum multi-procedure costs. The constraints of the model include machined surface roughness, power of lathe, parameters of lathe, and turning allowance. Different from the existing optimization...

You 11.00R20 tire shoulder suffered hyperthermia and periodic alternating stress will easily result in rubber aging and cracking, then the flaw generate in it. In this paper, based on ANSYS Workbench, a local sub-model of the 11.20R20 tire shoulder is established. And the stress, deformation and displacement...

The performance of the tire has an important effect on vehicle running safety, and in the actual use of the tire will inevitably encounter a variety of complex and harsh conditions, it is easy to make the tire scratches, so to study the effect of scratches on the performance of the tire is very important....

The dorsal scale of Laudakinstoliczkanain desert has good performance of erosion-resistance because it is composed of protein "soft" layer and the covering of the cuticle "hard" layer. In this paper, we simplify it to a layered structure called a bionic layered structure(BLS). Based on it, a numerical...

According to the actual structure and working condition of a high-flow gas pressure control valve in cycle power generation project, 3-D model based on Fluid-structure Interaction (FSI) is set up. A combined calculation for turbulent flow and structure response of high-flow control valve was established,...

TBM (Tunnel Boring Machine) has become a main technical means for the tunnel construction of rock condition. Cutter mount is an important welding structure on TBM cutter- head and it is the most dangerous positions to occur fatigue failure in the project. According to the characteristics that welding...

Aiming at the manual ball valve in irrigation pump in industrial production pipeline, it is researched the flow characteristics of the valve and the pipeline under different way of opening valve. It is used user defined function (UDF) method and dynamic mesh technology of FLUENT software. Three valve...

The traditional shape of the base cavity of the projectile is a column. This paper focus on the influence of the little rake angle truncated-cone base cavity on the flow field of the projectile. With numerical method, the distributions of the flow field parameters and the drag coefficient of projectile...

The influence of different flapping wing models on the aerodynamic performance of a hovering insect is numerically investigated. Some simplified models are compared with the aerodynamic performance of the hovering fruit fly wing. With the increase in the complexity, two different models are considered...

Modal performance of the automotive instrument panel has been studied in this article. Finite element software Hypersh/ OptiStruct has been used in modal analysis in this article. This paper first calculated the modal frequency and vibration shape of the instrument panel. Engineered modification has...

Numerical study of two dimensional lid driven triangular cavity flow is performed via using lattice Boltzmann method on low Reynolds numbers. The equilateral triangular cavity is the first geometry to be studied, the simulation is performed at Reynolds number 500 and the numerical prediction is compared...

According to wet clutch friction temperature is too high, excessive thermal stress, and other issues during the engagement. It adopted ANSYS workbench software for finite element analysis and introduced direct coupling method to complete simulated calculation and analysed of the temperature field and...

The modal analysis and spectral analysis of nuclear pipes are carried out by FEM software ANSYS. Taking the piping system of Ningde Nuclear Plant as an example, the calculation results by using software ANSYS are compared with those by using software SYSPIPE.

Aiming to break through the assumption that ship's transverse (mainly roll) and longitudinal (mainly pitch and heave) motion are not coupled in traditional sea-keeping study, the mathematical model to study coupling coefficients of transverse / longitudinal motion was proposed, and ship's roll, pitch...

The crankshaft is the important parts, engine crankshaft in multi-axis linkage machining crankshaft connecting rod journal fillet, due to the current solution is expensive, time consuming is too long, this paper proposes an improved scheme, make better able to take advantage of the present condition...

In this paper, the internal flow field in an optical module of DUV laser was analyzed by ANSYS Fluent based on the finite volume method. The way of purging nitrogen was optimized according to the results of the analysis. After the optimization, a better nitrogen purge method was obtained, and a flow...

In this paper, based on the lattice Boltzmann method (LBM) and the Oldroyd-B model, the decoupled solving method for the incompressible Navier-Stokes equation and advection-diffusion constitutive equation and the boundary processing formats are given. The flow of viscoelastic fluid in the planar 3:1...

The dynamic response of a maxillary molar with periodontal ligament (PDL) was investigated to explore the dynamic behavior of the tooth. Three-dimensional (3D) finite element model of a maxillary molar with periodontium was constructed using CT image-reconstruction. The modal vibration of the maxillary...

Taking the static pressure of the oil film, carrying capacity and stiffness of the table as the main study subjects, in order to achieve the optimum design of oil film thickness, optimization method of the objective function with the linear weighting has been proposed, and the optimum oil film thickness...

The precise 3D(Three Dimensional) modeling of the non-circular sector gear of the rocker shaft is an important basic work for the study of the mechanical properties of the automobile steering. The traditional 3D modeling method is difficult to obtain accurate model of the rocker shaft because of its...

In recent years, MRI studies have resulted in a better understanding of the movement and deformation of the meniscus in the terbinafine connection and provide, information on the morphology of the articular cartilage. In this paper, we will use of computer-aided technique and MRI to reconstruct the shape...

Grind-hardening is a new technology for steel parts surface enhancing which uses thermal and mechanical composite effects on the parts in the grinding process. During the process, the workpiece surface generates hardened layer which improves the surface quality. As a key performance indicator of measuring...

To simulate the tread temperature rise of the working subway train in the process of its normal operation and to explore the temperature rise limit of wheel tread during operation, finite element numerical simulation was used in this paper. Based on heat transfer theory and finite element method, a three-dimensional...

Stable and uniform sound distribution is a key factor in high precise volume determination of solid material especially for mass standards. A numerical study is carried out to study the distribution and uniformity of sound pressure. The FEM simulation results show that the sound pressure distribution...

A gas pressure control instrument for air-assisted extrusion has been manufactured by us. The principle, hardware connection and software design of this controller are introduced in this paper. The PLC micro controller is assembled in hard connection with pressure sensor and control valve. The 24V power...

Due to concentrated suspensions for solid dispersed phase and liquid mixture, the diverse nature, so concentrated suspensions of two-phase flow system in the transport process is very complex. Two phase flow is a complex nonlinear dynamic system. In the numerical simulation movement of two-phase flow...

The flow around a circular cylinder is one of the classical problems in CFD, in engineering will often encounter this kind of problem, such as river flows through Piled Wharves, piers, offshore drilling platform pillar, and all kinds of large-scale industrial equipment and facilities how better resistance...

In this paper, measurement process and communication principle of measurement and simulation dual-mode terminal are introduced at first, then, a novel measurement uncertainty evaluation and parameter simulation method is described. According to analyzing the limited measurement results, we get probability...