The overall mechanical performance of modular steel structure buildings are largely determined by the mechanical performance of the connection joints between the adjacent modules. In this paper, a novel connection joints between the adjacent modules is taken as research object, which has the advantages of convenient construction and assembly. By means of FEA, three models including the joint model, the model of adding ribs and the model of increasing beam height are calculated, and the experimental results were compared. The finite element model uses solid elements to simulate the detail structure of joints and contact elements to the contact relationship between components. The research results show that the results of finite element analysis are in good agreement with the experimental results in terms of deformation state and bearing capacity, and the accuracy of the finite element model is verified. The finite element model established in this paper can simulate the stress state of various parts of the joint which can make up for the shortage of the experimental measurement.
In this paper, the nonlinear analysis of the motion structures is studied by using the vector form intrinsic finite element (VFIFE, V-5) method. The main object of this research is to develop an internal hinge of two ends of the plane frame element. In this study, the hinge function of frame element is used to compute the nonlinear dynamic responses of the motion structures. A fictitious reversed rigid body motion can be used to separate the rigid body motions and the pure deformations of the frame element. It is not requires any iteration or any parameters for the VFIFE method during computation process. Four examples illustrate the accuracy of the proposed procedures in computing large motions of a flying flexible structure.
A stability analysis for a single-layer reticulated shell is presented in this paper. The structural buckling modes and critical loads are calculated first. A preliminary security examination is presented based on the results of linear buckling anasys. And then the load-carrying capacity of this structure would be calculated through the geometric nonlinear full-range analysis. Finally a conclusion is deduced that the stable bearing capacity of this structure has met the requirements of the specification.
In this paper, the double lipped channel cold-formed steel column is analyzed by finite element method. Compared with the code both at home and abroad, convenient and practical design formulas have been figured out. The finite element model in this paper was compared with existing data analysis, and the results show that the model precision can meet the needs of the analysis. Through finite element analysis of double lipped channel cold-formed steel column, we can get the influence of a relative size, the plate width, on the bearing capacity of the local stability. The specification about plate buckling under the influence of the common effect of the different types of adjacent panel has no clear rules. Under even pressure, we get the general calculation formula under certain conditions. The conclusion can be used for reference in the standard revision.
:In order to investigate the compression behavior of double lipped channel cold-formed thin-wall steel column used in Box housing, a total of 12 columns with three different lengths(3000mm,2556mm,2000mm, respectively)and two different thickness(3mm, 4mm )were tested to investigate the ultimate load-carrying capacity and deformation behavior of cold-formed steel. It is found that the thickness has an obvious effect on compression ultimate load-carrying capacity, while the length does not have much influence. The failure modes of most specimens contain local buckling. Test analysis result simulated by finite element analysis (FEA) agreed well with the experimental data, which verified the FEA analysis method is appropriate. The analysis method provided in this paper can be referenced for the design of Box housing.
The purpose of this paper is to study the nonlinear responses of equipment fixed on the light-weight partition wall (LWPW). The center-point flexure test (CPFT) and static load test of the light-weight partition wall (LWPW) are developed. The elastic modulus and support loading of three boards can be obtained from FPFT and static loading test. The LWPW finite element model using ANSYS is used to simulate the deformations of the board subjected to external forces. Numerical simulation results are very close to the experiment results. It demonstrates the accuracy of the ANSYS model.
In this paper, a set of the procedures of the numerical simulation for the buried pipeline is proposed. These numerical procedures are used to compute the large deformations of the buried pipeline through the fault. In order to simulate the fault slip, displacement control is adopted. The geometric and material nonlinearity of buried pipe are considered. The beam elements are used to calculate the buckling deformation of the pipe. The ASCE (1984) soil spring models (SSM) are used to model the interaction of deformation of the soil and the buried pipe. In order to confirm rationality of numerical results using SSM, comparison between experiment result in Cornell University (CU) [5], Trautmann and ORourke experiment results [7] and SSM numerical results are studied. Two examples demonstrate the accuracy of the proposed procedures.
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