Materials Literature
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The semi-analytical finite element method is a method that use the finite element method to discrete the structure in the spatial domain,and then use the precise integration method in time domain to solve the problem. There are two ways of carrying out the method: one is processing time domain first,and then deal with…
Vehicle road simulation test should reflect the vehicle service loads actually,traditional load spectrum compilation methods were unable to meet the requirements of road simulation test.Therefore it is necessary to apply a load spectrum compiling method which can retain characteristic of the service load.In this paper…
The main winch of rotary drilling rig is mounted on the platform or the lower part of the drilling mast. Effects of mount position of the main winch on the drilling mast hydraulic cylinder load are discussed in the present article. Based on forces on the body of the drilling mast luffing mechanism,and the torque equil…
The uncooled infrared focal plane arrays（ UIRFPA） used in this micro-Raman experiment are composed of Si O2 thin film and Si substrate. They have the characteristic of MEMS microstructure. The process of the thermal oxidation may lead to the residual stress on account of thermal ecpansion coefficient mismatch and latt…
When angular contact ball bearings match together,due to high demand of manufacturing and installation precision,only increasing the number of angular contact ball bearings to increase the radial bearing capacity has great limitations.Therefore,it was considered that using heterogeneous rolling bearing match to increa…
Considering the nonlinear factors,the contact and friction between plates as well as bolt and plates,bolt preload,etc,three-dimensional finite element model bolted structure was developed. Three mathematical expressions of contact stress was deduced,which was based on the assumption that stress distribution in a circu…
The deformation of static bending was analyzed for uniform beam by the boundary element method.Non-uniform beam was combined with multiple uniform beams by method of system rigid combination without coordinate transformation.Stiffness equation of flexure hinges with straight circular was proposed.A micro rotary mechan…
Based on the three-dimensional model of tripod constant velocity universal joint,considering the offset of the cases,analyzed and calculated the normal force,peripheral force of the roller,and its change rule with rotating angle and swing angle,and also analyzed the axial force,radial force and deflection torque gener…
Simplified mechanical model of FPB isolated bridges was established,the response amplitude was calculated used mode superposition method.The accuracy of results was verified by finite element simulation based on SAP2000.It was considered that the response amplitude agreed well with that of finite element simulation.Un…
According to the requirement of the enterprise that the raw material of leaf spring clamp is replaced from QT500-10 to ZG650-830,in order to reduce costs,lightweight design is needed as a result. Based on the parametric finite element model of leaf spring clamp established by the adoption of ANYSYS Workbench,this arti…
In order to analyze the change law of stress of aluminum chaff in the process of rolling waves,and the reasons of the eccentric circular to get the accurate wave of radiating corrugated ribbon,the model of bilinear isotropic harden was established to simulate the process of rolling wave in the Ansys Workbench.The resu…
Ball screw pairs of high static stiffness is to guarantee the positioning accuracy and speed of ball screw pair a good ability to adapt the key.Considering the influence of deformation on nut assembly static axial stiffness nut bearing radial,based on simplified model on the analysis of simplified nut assembly static…
An oil pump is the core of machinery lubrication system components. With the base of the outside gear engine oil pump,the paper built a method in finite element and theory analysis aiming at the oil pump machine manufacture stuck phenomenon. The numerical simulation analysis to inner flow field of the pump was conduct…
Fault tree of automotive brake system and tire were set up according to their typical failure modes. We use the likelihood function and belief function of D-S theory respectively as the fault tree to analyze the upper and lower bounds of bottom event fault probability interval,we also apply the interval analysis theor…
The dynamic mechanical properties of oxygen free copper has been tested under the different strain rate（ 2 500s- 1 15 500 s- 1） at the room temperature by split Hopkinson pressure bar（ SHPB）,the true stress-true strain curves has been obtained. Power-Law constitutive model and Johnson-Cook constitutive model have been…
In the multidisciplinary optimization ISIGHT software environment,the comprehensive application of PRO / E parametric-modeling function and ABAQUS FEA function establish a framework of CAD / CAE integrated optimization design for tower door. Firstly,the parametric geometric model of door is built,Secondly,the FEA mode…
Based on wrinkling model,a theoretical model for thermal barrier coating system was established. Using the temperature parameter method,the paper constructed the residual stress field of coating system,built the discrete format of finite element for lower coating shakedown analysis,and analyzed the effects of wrinklin…
According to the stochastic distribution of parameters,the reliability analysis of spring locking mechanism is carried out for helical spring by using probability theory and mathematical statistics. The optimization model of the locking mechanism spring parameters is established. Using Simulated Annealing Algorithm（ S…
Considering the facts that different measurement point information provide different sensitivity degree and vibration transmission make fault relate to each measuring point,the fault diagnosis model of vibration relevant information fusion were put forward. The method is to obtain the eigenvector of wavelet packet sig…