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Computer simulation of the expanding internal pressure was performed for pipes made of steel and aluminum alloy and having uneven wall thickness. For this simulation the software tool ESI Virtual-Performance 2016.0 was used that implements the finite element method. The convergence and accuracy of the solution were estimated by comparison with known solutions. A full factorial computational experiment...
Accurate thermo-mechanical coupling analysis for operational conductors is important to guarantee satisfaction of the safety requirements, e.g., strength safety or safe distance of sag. The paper presents a new method for this analysis, i.e., calculating the temperature fields using finite element analysis, based on which to compute the stress fields using the force equilibrium and compatibility conditions...
According to the needs of the actual project, using finite element method calculates and analyzes the optimum structure scheme, and get the distribution of stress and displacement under various conditions, analysis results show that using the long-span prestressed concrete floor main girder structure is economic and reasonable, can satisfy the engineering requirement.
A finite element model for analyzing the strain-stress field of laser cladding process was built and the process with powder feeding was analyzed with the model. Temperature variation during cladding described in Part I was applied as “body force” loads in the strain-stress analysis. The analysis result shows that, by the end of cladding, the clad layer is in tension stress and the stress values are...
The steel-concrete composite beam bonded by adhesive has its particular advantages over the traditional composite beam. Based on the experimental observation of push-out test, the shear connection behaviour of concrete-adhesive interface is modelled by nonlinear springs, whereas the steel-adhesive interface is assumed connected perfectly. Then a three-dimensional nonlinear finite element model for...
Analytical methods for comprehensive evaluation of the seismic vulnerability of bridges have only recently become feasible due to a combination of advancements in the field of seismic hazard assessment and structural response analysis. However, current analytical methodologies, mainly based on fragility curves, may not be appropriate for the long-span multi-tower suspension bridge which belongs to...
The distribution of surface metal magnetic memory (MMM) signals on flat-plate specimens of ferromagnetic materials has been investigated for three types of Q235, 45 steel and T10. Defects were made on the latter two materials in order to obtain concerned signals using magnetic memory sensor at different state of plastic deformation. Stress was calculated using finite element method under plastic strain...
The fine blanking process with stepped-edge punch was analyzed by finite element method for different curvature parts. Distributions of hydrostatic stress on deformation zone were obtained for different curvature parts. An experiment device has been designed and made for one automobile part by fine blank process with stepped-edge punch. The reasonable forming parameters were adjusted according to...
The elasto-plastic finite element method (FEM) is applied to investigate the effect of contacting forms of steel mosaic block on the stress distribution in the aluminum single lap joint. The results obtained show that the stress in the joint was changed evidently. A couple of compress longitudinal peak stress and a negative peel stress occur in the mid-bondline of the joint so that the load bearing...
Stress analysis is of importance for security assessment of pressure vessels in the design and manufacture processes. This paper presents a stress analysis for a two-layered spherical high-pressure vessel of special steel. Firstly, the finite element model was built by the software ANSYS. In order to get an acceptable analysis precision, the proper mesh density distribution was obtained by the adaptive...
In order to study the influence of the geometric figure on the service life of the converter, four different geometric figures of the converters were analyzed by using finite element method in this paper. Refractory material behavior was described by Drucker-Prager plasticity model combined with strain softening material behavior at tension, and most of the material physical parameters changing with...
The finite element software ABAQUS is used to simulate numerically the relationship between the load and deflection of layered steel fiber reinforced concrete beam bended at three points. The result is very consistent with that of the relevant experiments, which shows that layered steel fiber reinforced concrete beam is not affected significantly in the elastic stage, but the ultimate bearing capacity...
As a temporary extraordinarily structure, the large bridge elevated-pile cushion-cap suspension box-cofferdam is acted by static loads and dynamic loads. The structure with dimension of 120 m long, 52.3 m wide, 16.5 m high is in bad risk of failure after the first layer cushion cap concrete total 3 m high, gross weight 3.7 times 104 ton fluid body is poured. This paper calculated the stresses of steel...
Based on finite element method and ANSYS software, vibration feeder is fatigue break influenced by exciting force alternate load. This paper introduces the rational finite element model of vibration feeder. It discusses harmonic response analysis and discovers weak links which is angle steel junction of side plate, feed inlet and junction panel between no feed side plate and bottom plate then makes...
The applications of finite element method (FEM) to the analysis of bridge structures are introduced, and an analysis procedure for complex-shaped bridges based on FEM is proposed. The example bridge is a steel arch bridge with a total span of 201.96 m, which is going to be built in China. In order to study the spatial stress distribution of this bridge, a series of FEM analyses are conducted according...
Finite element method and analytic method are used to safety evaluation of a penstock laid on downstream surface of dam and its expansion pipe on the following issues: (i) Concrete cracking zone, maximum crack width and stress in liner and bars are calculated and analyzed with allowable value; (ii) Relative displacement at both sides of the joint between dam and power station, and stress of expansion...
In order to study the effect of friction state on contact reaction force of rollers and bearing's inner ring and outer ring, contact analysis model was established by the local coordinate system and finite element method for rolling bearings of universal steel mill. Studied the changing rule of force parameters of rolling bearings during steel rolling, the results show that contact reaction is a steady...
The simulation model of hot rolling coupling was established using finite element method base on studying and analyzing of universal rolling method for H-beam. The distribution of temperature field and stress field in contact area as the main research subjects during hot rolling under the given rolling regulations of H-beam, the whole process of hot rolling was completely simulated. The results show...
Large-diameter longitudinal welded pipe is the main form of energy transport, and used widely in the area of oil and gas transportation. In this paper, large-diameter longitudinal welded pipe forming methods are introduced, and a review on recent research results of finite element simulation technology in the production of large-diameter longitudinal welded pipe are made, in particular JCO/JCOE pipe...
In this paper, a 3-dimensional mathematical model has been developed for the thermo-mechanical coupled analysis of the solidification process of carbon steel in funnelshaped mold using thermo-elastic-plastic finite element method (FEM). The major application of the model is to perform computations of temperature, stress and longitudinal cracking index (LCI) variations in shell. The effects of casting...
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