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Cable damage has a bad influence on the safety and serviceability of cable stayed bridge. Three parameters including the damage extent δ, the damage intensity η and the damage position α are introduced to depict the cable damage, various typical global cable damage cases are calculated with finite element method. The results show that the whole structure behavior is liner when the damage is small...
In order to avoid the serious accident in the temporary work zone and in the mobile maintenance process, the collision performance is studied to the absorption unite, making the safety control in the highway work zone where there is a lot of mobile maintenance vehicle. The installment has good absorption energy ability, thus protects the passenger to be not injured or to reduce the injury the degree...
In order to study the time-dependent behaviors of the working performance of biaxial reinforced composite foundation, the numerical simulation was conducted to investigate the time-dependent behaviors by four representative cases. The distributions and the dissipation of excess pore water pressures in the soft soil were examined for all the four cases. The variations of lateral displacement, total...
A Hermite reproducing kernel meshfree method is present for the free and forced vibration analysis of Kirchhoff plates. This formulation provides a straightforward and robust way to construct C1 approximation to investigate the dynamic response of Kirchhoff plates. The Hermite reproducing kernel approximation of the plate deflection is formulated using the deflectional as well as the rotational nodal...
Used the program, ANSYS, finite element model of the rung-shape long-span tensile cable-membrane structure in Foshan Century Lotus Stadium was conducted to investigate its dynamic characteristics and its mechanics performance under seismic loading. Results indicate that the natural frequencies of the structure are all lower and concentrate in a small range, and its jumping phenomenon isn't in evidence...
Elastic theory is employed for short span suspension bridges while deflection theory and finite element theory are used for long span suspension bridges. But the tension deformations of the suspenders are usually ignored in the elastic theory when to compute the internal force of small span suspension bridge. In this paper, a flexibility method considering suspenders deformation was proposed to calculate...
Nonlinear finite element procedure for control of cracking of 2-D concrete frame structures was programmed based on APDL parametric design language of ANSYS procedure. The program was designed for computing thermal internal force and corresponding crack width of members for super-long concrete frame structures under dead loads, prestressing force and monotone temperature variations. In this program,...
The research of load distribution is not only an important part of bearing theory but the basis of studying the other performance indicators of bearings as well. Based on the contact theory of Hertz, the relation of geometric deformation of slewing bearing under certain loads is analyzed, and an analytical formula of load distribution for the slewing bearing under the action of radial force, axial...
One-kilometer directional drilling rig is a head-type hydraulic rig, which can drill horizontal deep holes in coalseam with down-hole motor for gas drainage. To avoid the hole axis floating and the rig overturning, a stabilizer is designed for high stable ability in this paper. Stabilizer is subsequently modeled and simulated in four typical conditions where the drilling rod rotates. The result shows...
Finite element analysis can be used as a effective tool for study of AC electromagnet. In this paper, suction properties of AC plunger electromagnet was investigated based on Ansoft, a finite-element analysis software. The emulation analysis determines instantaneous armature force and time average armature force at different conditions. The effect of eddy currents in the shading ring and other part...
In this paper the principle of stationary total potential energy in structural dynamics first presented by the author is thoroughly examined. It is clearly shown that when being used in conjunction with a new matrix assembly technique called the "set-in-right-position" rule also proposed by us, which is inherently different from the most widely used direct stiffness method, the proposed...
In view of the poor characteristic of conventional all-vertical-piled wharf's ability of resisting horizontal loads,the paper put forward a new type of structure named mudsill all-vertical-piled and high-piled wharf. In order to study it's longitudinal and transverse transfer regulation of horizontal force under horizontal loads,The FEM software ANSYS is employed to analysis the interaction of pile...
Taizhou medical city exhibition Center project first adopts channel curtain wall structure, with a beautiful shape, tilt angle and high technology, which solves the key technical design problems of uneven distribution of internal forces in steel skeleton system and large local deformation. On the premise of the comprehensive analysis of several different load combination, irregular geometric space...
In this paper, a nonlinear FEM analysis model is set up based on the finite element analysis software—ANSYS. The staggered shear wall structure and the coupled shear wall structure are analyzed with this model. Compare with traditional shear wall structures, the staggered shear wall structure has many advantages, such as providing bigger space and lateral stiffness, reducing dead weigh and seismic...
Cable force of pre-tensioned cables decreased as subsequent cables were tensioned during construction of cable-stayed reticulated structures. Reasonable construction method must be drawn up to ensure accuracy of cable force, reduce construction input and accelerate construction progress. Two methods of positive sequence analysis and inverse sequence analysis for tension construction of cable were...
Based on real projects, a three-dimensional analysis model of 19 stories frame-tube superstructure, raft foundation and ground interaction system is established by the FEM software ANSYS to analyze the interaction characteristics under the vertical load. At the same time, the conventional analyse model is also established. The superstructure's and raft foundation's internal force, as well as foundation...
In the analysis of the live load nonlinearity and ultimate bearing capacity of a cable-stayed bridge, the planned construction state or the completed state of the bridge must be first obtained by adjusting the cable forces; then, further analysis for the next load step can be done by adding loads to the structure of this kind state. To achieve this aim, the paper re-develops an ANSYS-based finite...
For ground freezing and pile-support deep foundation pit of south anchorage of Runyang Bridge, ground freezing made the mechanic state of foundation pit become complex. Monitoring is timely monitor construction quality, and provide accurate science research data, found hidden danger etc. Through monitoring, we can momentarily master its stability status,found instability factors and adopt measures...
The main drawback of switched reluctance machines acceptance is the acoustic noise produced. Research efforts to minimize vibrations in this type of electric machines concentrate mainly on the rotational configuration and only a few works can be found focusing on linear actuators. This paper presents the results of finite elements analysis of vibration frequencies for a linear switched reluctance...
It is generally accepted that the diesel engine crankshaft strength analysis is of importance in evaluating the performance and lifetime of the crankshaft and then acquire the overall engine mechanical information. However it is significant to apply a suitable model on the calculation including force analysis, simplification of the crankshaft geometry model, etc. In this paper, a single-cylinder crankshaft...
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