scholarly journals Calculation of column bases under biaxial bending

2014 ◽  
Vol 13 (3) ◽  
pp. 235-242
Author(s):  
Marcin Górski
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Axial Force ◽  
Iterative Procedure ◽  
Structural Elements ◽  
Biaxial Bending ◽  
Element Analysis ◽  
Component Method ◽  
Column Bases ◽  
The Way

Columns are structural elements subjected to compression and sometimes bending. The way of their anchorages in foundations usually allows to withstand bending only in one plane, while in another plane connection is assumed to be hinged. Sometimes column need to be fixed in both planes, for example in steel sheds, which causes biaxial bending with additional axial force in column bases. Both codes [1] and available literature (ex. [2], [3], [4]) give procedures only to calculate column bases under bending in one axial. This paper shows the proposal of the procedure to calculate column bases under compression and biaxial bending. This iterative procedure is based on component method. Obtained results were compared with results from finite element analysis.

The Rod Force Law Analysis of 600MW Air Cooling Tower

2014 ◽  
Vol 945-949 ◽  
pp. 1135-1138
Author(s):  
Tao Liang ◽  
Chun Ling Meng ◽  
Yang Li ◽  
Xiu Hua Zhao
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Axial Force ◽  
Optimization Design ◽  
Cooling Tower ◽  
Air Cooling ◽  
Element Analysis ◽  
The Finite Element Analysis ◽  
The Cost

The finite element analysis of large air cooling tower was carried out using ABAQUS. On the basis of strength above,8 types of the axial force are analyzed and summarized, find valuable rules, and put forward the further optimization design. So that it can satisfy the strength and stability of air cooling tower, the structure is more reasonable, reduce weight, reduce the cost.

A three‐dimensional strain concentration equation for countersunk holes

2008 ◽  
Vol 43 (2) ◽  
pp. 75-85 ◽  
Author(s):  
A Bhargava ◽  
K N Shivakumar
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Concentration Factor ◽  
Three Dimensional ◽  
Structural Elements ◽  
Element Analysis ◽  
Strain Concentration ◽  
Wide Range ◽  
Dimensional Equation ◽  
Concentration Equation

Countersunk rivets are used to join components to achieve aerodynamic or hydrodynamic surfaces. At countersunk holes, three‐dimensional stress and strain concentrations occur. Previously, the present authors developed a three‐dimensional equation for the stress concentration factor Kt through a detailed finite element analysis. This paper extends the study to include an equation for three‐dimensional strain concentration factor Ktε using a similar approach. The resulting equation was verified by finite element analysis for a wide range of countersunk hole configurations and plate sizes. Results showed that the maximum strain concentration is at the countersunk edge. The developed equation is within 5 per cent of the finite element results for all practical cases. It was also found that the Ktε and Kt expressions are similar and Ktε≥ Kt. The maximum difference between the two is 8 per cent (for = 0.3) or 2 for straight‐shank holes and about 2/2 for countersunk holes. The proposed equation is a valuable tool for strain‐based design of structural elements.

Hydroforming Developments: Insights of other Researchers

2011 ◽  
Vol 110-116 ◽  
pp. 1748-1752 ◽  
Author(s):  
E. Pavithra ◽  
Ke Zhu
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
High Strength ◽  
Light Weight ◽  
Sufficient Data ◽  
Element Analysis ◽  
Simulation Tools ◽  
Failure Cost ◽  
Cost Of Materials ◽  
The Way

Hydroforming is one of the forming technique which paves the way for the easy production of light weight and high strength automotive and aerospace components. The different approaches presented by the various authors in the field of hydroforming and its applications are reviewed in this paper. The authors have used Finite Element Analysis using different simulation tools like Abaqus, Ansys, LS-Dyna and Autoform 3D that help to minimize the failure cost of materials and dies. This paper deals with those disparate approaches, discussing exhaustively the process and application of hydroforming, providing sufficient data to make readers identify the burgeoning areas of research.

Whole-Process Analysis of the Mechanical Responses of High Formwork Support Systems during Concrete Pouring

2013 ◽  
Vol 368-370 ◽  
pp. 1583-1590
Author(s):  
Chang Ming Hu ◽  
Yan Guo ◽  
Jie Wang ◽  
Qiong Wu
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Axial Force ◽  
Support System ◽  
Mechanical Response ◽  
Process Analysis ◽  
Internal Force ◽  
Element Analysis ◽  
Whole Process ◽  
The Finite Element Analysis

An underground club in Xian is taken as the research object to explore the mechanical response of the internal poles of its high formwork support system during concrete pouring. The internal force static measurement of the high formwork support system is carried out. Each stage of the concrete pouring is simulated by the finite element analysis software ANSYS in the form of load step, whose results are contrasted with the measured results. The contrast reveals that the concrete pouring sequence has direct influence on the tendency of poles axial force and on the location of maximum axial force and that it is reasonable to adopt imaginary horizontal force which simulates the initial defects to carry out the overall stability analysis of the high formwork support system. It is pointed out that the program of setting up the formwork and the concrete pouring sequence should be determined with the finite element analysis.

A New Method for 3-D Contact Problems of Four-Row Tapered Roller Bearing Using Finite Element Analysis

1990 ◽  
Author(s):  
Qigui Zhang ◽  
Jun Yu ◽  
Yuanke Li ◽  
Caiyan Zhao
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Axial Force ◽  
Roller Bearing ◽  
Contact Boundary ◽  
Computation Method ◽  
Steel Mill ◽  
Element Analysis ◽  
Calculation Time ◽  
Tapered Roller

Abstract The most glaring problems in reality in the field of finite element analysis of tapered roller bearings are long calculation time and great error due to neglect of axial force. The static condensation method and solving technique are introduced in this paper to reduce the calculation time and raise the calculation precision. Due to the effects of axial force, the contact boundary becomes more complicated. Up to now, the paper dealing with axial force is rarely seen. This paper mainly studies four-row tapered steel mill bearing under reality loaded condition with finite element analysis and computation method. The contact load-distribution given by finite element calculation is in agreement with photo-elastic experiment. This paper also supplies a fast and effective numerical method for finite element analysis of many other types of bearings.

The Limit Load Interactions of the Brazed Aluminum Plate-Fin Heat Exchanger Header Under Combined Piping Loads

2011 ◽  
Vol 133 (3) ◽  
Author(s):  
Wei Wang ◽  
Liang Chen ◽  
Caidong Guo
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Heat Exchanger ◽  
Axial Force ◽  
Shear Force ◽  
Bending Moment ◽  
Limit Load ◽  
Force Component ◽  
Element Analysis ◽  
Interaction Curves

In order to investigate the strength design problem of the brazed aluminum plate-fin heat exchanger header under complex external piping loads, the limit load interactions of the header under combined piping loads are studied in this paper. To establish the limit piping load interaction curves, nonlinear finite element analysis assuming the elastic perfectly plastic material model is performed by using the commercial finite element analysis software ANSYS and multiple piping load combinations, which are the combination of orthogonal bending moment components, torque component-shear force component, bending moment component-axial force component, compound bending moment-axial force component, and torque component-compound shear force, of the header with six opening ratios ranging from 0.5 to 1 are explored. The results of the interaction diagrams show that the feasible combined piping load zone of the header derived from the interaction curves can be simplified as a triangular zone determined by the individual limit piping load components safely and the simplified feasible zone is suggested to be used for establishing a simplified safety assessment method for the header under combined piping loads.

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