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Grid division in finite element is very important to carry out simulating analysis, it directly affects the following calculation accuracy for analysis result .In view of this, and this article uses four kinds of different ways of grid division to mesh gear-tooth root spot during the course of finite element analysis of gear meshing. Through drawing up and comparing the von mise tendency chart of...
It is always difficult to model the viscoelastic damping material accurately in a dynamics analysis, because the frequency has great influences on characters of the viscoelastic damping materials. This paper presents an iteration control program based on QR damping modal extraction method in ANSYS for calculating the structure modal damping ratio more accurately.
The MacNeal slender beam was calculated under several equivalent treatments respectively with Q4 element, the results showed evident differences of about only three significant digits around each other. These equivalent treatments include equivalent stiffness method and equivalent load method for beam's thickness, changing elasticity Modulus E and load F in proportion, changing node numbering, different...
Finite Element Method (FEM) model was built and model analysis was executed for a thin-wall cylinder dynamometer with ANSYS, the natural frequencies and modal shapes of the dynamometer are obtained. The topological optimization was done with the variable-density method. The utilization rate of materials was improved, and the lower model frequencies were increased.
Due to the permenent magnets on the pulley, metal belt in longitudinal motions is influenced by magnet in the system of metal belt transmission with permanent magnets. If we view the magnetic force as an external stimuli, it will result in transverse forced vibrantion of the metal belt. This article used the Kelvin viscoelastic model at first place, and founded the dynamic model of transverse nonlinear...
According to the high strength and stiffness characteristics requirement of single stacker fork structural, the finite element method (FEM) was applied to analyze statics of single stacker fork under different operation conditions. The natural frequency and modal shape etc. were gotten. The results provide an effective optimization method for single stacker fork design.
By adopting the idea of firstly building the entity model, then introducing it into ADAMS to build a multiple-rigid-body model, and at last replacing part of the components with the finite element model, the rigid-flexible coupling dynamic analysis model for the valve train of a certain type of diesel engine is set up. Meanwhile, the dynamic simulation analysis on the model is made, and the analysis...
The three-dimensional model of the slide block of the YQK-1250 hydraulic machine was established in this article by solidworks, and then was imported into Ansys. The modal analysis was completed with the method Lanczos. And got the proper frequency and vibration mode. Through the analysis of their structure performance under the various vibration modes, got the dynamic character. After that, the character...
The dynamic stress caused by vibration when construction hoist is working may cause the structure damage, so the dynamic analysis is an essential part in the design of construction hoist. This paper establishes a dynamic model of construction hoist by ANSYS, then conducts modal analysis, and gets the first 6 natural frequency and vibration modes.
This article is about the finite element analysis of the connection between steel beam and concrete filled steel tubular. using the structure finite element analysis software ANSYS9.0, It was conducted the study of the mechanical behavior of steel beam to CFST column. Bashed on many experiments, A finite element study on the joint was made by using ANSYS9.0. And results were compared to of experiment...
Composite foundation consisting of prestressed concrete pipe pile, slab, gravel cushion and soil is used in the ground treatment of coal storage silo with big diameter. It can spread most of load to the deep soil, reducing settlement and horizontal deformation of the soil. Consequently it reduces the impact on the piles of silo structure. In this paper finite element method is used to analyze the...
Rubber parameters of single metal floating face seals are gained accurately by adapting the theoretical analysis and tests, and the problem that uncertainty of rubber parameter make theoretical analysis impossible quantitative is solved. Axial force-displacement curve calculated by finite element analysis model is close to the experimental curve at the overall tendency, which shows that finite element...
The FEA model of the 3-axis double-column machine tool is built using FEA method. According to the practical machining process, the static stiffness of the machine tool is defined, and the dynamic and static characteristic is investigated. Using the part rigid method, the contribution of various assemblies to the whole stiffness is obtained. The deformation under the gravity and cutting force is analyzed...
The Swimming and Diving Hall in Qingdao Sports Center is constructed for the 11th National Games in China. As a complex grid structure with a long-span steel roof, its construction is difficult to control. The pulling haulm to promotion method is employed in the construction of this grid structure. In this paper, the adjacent pulling haulm promotion differences and the ascent of the whole pulling...
In order to simulate mutual effects between crankshaft and base, connecting rod and crankpin, the FEA software is applied to crankshaft's structural analysis. Based on the crankshaft model and reasonable contact set, the crankshaft is analyzed successfully. Results show that the way can be better applied for the engineering practice as a new thought for the crankshaft's intensity analysis and the...
In order to improve the efficiency of mechanical elements design, calculation and analysis on the methods of traditional driving axle design, the Visual basic software development tools were adopted to develop the parameterization technology for the axles design. The integration technology for the computer aided design and computer aided engineering was discussed and developed to realize the elements...
Vertically freezing is a reliable method of reinforcement for shield launching and accessing. Engineers often use Japanese formula to determine the thickness of the reinforcement. At the same time, some engineers use another formula, which is deduced by the elastic theory about circular plate under different constraints. By finite element analysis on load-structure model this paper discusses the constraint...
The simulation experiment and analysis were conducted to evaluate the tension in the geomembrane which was installed on the bottom and side slope of a waste landfill. Firstly, the friction angle and adhesion were obtained between non-woven geotextile and sand, HDPE geomembrane by direct shear experiments. Secondly, the tension in the geomembrane was measured by filling in the small landfill. The results...
Stiffness is an important index of machining centers' performance. The stiffness of high-speed vertical machining centers named VH1100 is analyzed by finite element method. The finite element analysis model of the machining centers is built considering the linear stiffness of double linear guide rails and the axial stiffness of double ball screw and ball bearing. The deformation of the machining centers...
In China, the use of carbon reinforced polymer (CFRP) to provide lateral confinement for enhanced ductility and strength of reinforced concrete structures has been increasing. The present study, attempts to analytically investigate the effect of the layout of frame columns retrofitted with different layers of CFRP on the seismic performance and damage potential of structures under strong ground motion...
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