Preliminary Analysis on Wall Beam Force Algorithms under the Action of Vertical Load

2012 ◽  
Vol 166-169 ◽  
pp. 2841-2846
Author(s):  
Yan Song Gao ◽  
Yong Sha
Keyword(s):  
Finite Element ◽  
Comparative Analysis ◽  
Stress State ◽  
Preliminary Analysis ◽  
Internal Force ◽  
Masonry Structure ◽  
Vertical Load ◽  
Current Code ◽  
Selection Of

This paper makes a study on the stress state and internal force algorithms of wall beams under the action of vertical load. It also makes a comparative analysis to several typical wall-beam designs at present. Then, by using the finite element, it verifies the accuracy and reliability of internal force algorithm formulas of wall beams in current Code for Design of Masonry Structure, hoping to provide a solid theoretical reference for the selection of wall beam algorithm designs.

Comparative Analysis of Finite Element Method and Analytical Method on the Truss

2013 ◽  
Vol 351-352 ◽  
pp. 865-868
Author(s):  
Hai Bo Liu ◽  
Yu Li Liu ◽  
Li Hua Zhang
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Comparative Analysis ◽  
Stress State ◽  
Analytical Method ◽  
Internal Force ◽  
The Finite Element Method ◽  
Reasonable Range ◽  
Calculation Results ◽  
Element Method

This paper takes a typical truss as an example, respectively to using the analytical method and the finite element method for the internal force is calculated, the calculation results show that the two error within a reasonable range, the analytical method is to many assumptions as the premise, the calculation is the main force, the main force is not fully representative of truss real stress state, and the finite element method considering the situation in a more general and general, so the results are relatively reliable

scholarly journals A plasticity model for spudcan foundations in soft clay

2014 ◽  
Vol 51 (6) ◽  
pp. 629-646 ◽  
Author(s):  
Youhu Zhang ◽  
Mark J. Cassidy ◽  
Britta Bienen
Keyword(s):  
Finite Element ◽  
Load Capacity ◽  
Soft Clay ◽  
Plasticity Model ◽  
Vertical Load ◽  
Geotechnical Centrifuge ◽  
Centrifuge Tests ◽  
Model Components ◽  
Jack Up ◽  
Selection Of

A plasticity model for predicting the load displacement behaviour of a typical spudcan foundation for offshore jack-up platforms under combined vertical, horizontal, and moment loading in soft clay is presented. Results from geotechnical centrifuge experiments of a spudcan embedded vertically to 0.7, 1.0, and 1.45 footing diameters are described. Augmented with finite element results, these centrifuge experiments are used to evaluate the plasticity model components. As a result of soil backflow on top of the spudcan, enhanced combined bearing capacity was measured and this is reflected in increased yield surface size. A tensile vertical load capacity is also incorporated. The excellent predictive capabilities of the model are demonstrated by retrospectively simulating a selection of centrifuge tests.

Comparative Analysis and Selection of Seal Structure between the Piston and Casing of Rapping Device

2012 ◽  
Vol 487 ◽  
pp. 401-405 ◽  
Author(s):  
Jiu Yang Yu ◽  
Yi Wen Chen ◽  
Xiao Tao Zheng ◽  
Wei Lin ◽  
Si Hao Nie
Keyword(s):  
Finite Element ◽  
Comparative Analysis ◽  
Equivalent Stress ◽  
Fluid Pressure ◽  
Nonlinear Finite Element ◽  
Finite Element Models ◽  
Working Pressure ◽  
Von Mises Equivalent Stress ◽  
Von Mises ◽  
Selection Of

ANSYS was employed to build nonlinear finite element models of seal structure of double-Y and quad-ring between the piston and casing of rapping device respectively. The relationships of the contact stress versus fluid pressure and the Von-Mises equivalent stress versus working pressure of fluid were obtained. The comparison of the two calculated results presented the seal structure of double-Y was proper for rapping device between the piston and casing.

A Method for Determining the Value of m Based on PLAXIS Nonlinear Finite Element Analysis

2011 ◽  
Vol 250-253 ◽  
pp. 1483-1488
Author(s):  
Jin Song Gui ◽  
Zhen Guo Li ◽  
Qing Meng ◽  
Bo Zhang
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Bending Moment ◽  
Nonlinear Finite Element Analysis ◽  
Internal Force ◽  
Nonlinear Finite Element ◽  
Maximum Displacement ◽  
Element Analysis ◽  
Finite Element Software ◽  
Selection Of

The value selection of m has a greater influence on the internal force of pile. So, how to determine the value of m is very important for the “m” method. In this paper, a geotechnical finite element software PLAXIS is used for the nonlinear finite element analysis of elastic long pile under the horizontal force action. By using the calculated maximum bending moment and the maximum displacement at the ground, and combined with the related formula for “m” method given in 《Code for Pile Foundation of Harbour Engineering》, a more accurate value of m can be obtained conveniently. Because this method is simple and practical, it can provide a useful reference for the project designer to determine a reasonable value of m.

Retrofitting and Reinforcement Design of Steel Platforms Made of Beam and Brace

2013 ◽  
Vol 368-370 ◽  
pp. 1722-1725
Author(s):  
Wei Wu ◽  
Jing Ji
Keyword(s):  
Comparative Analysis ◽  
Carbon Fiber ◽  
Internal Force ◽  
Structural Members ◽  
Steel Girder ◽  
Section Size ◽  
Original Frame ◽  
Reinforcement Design ◽  
Connection Design ◽  
Selection Of

Combined with the actual project that Rehabilitation and Strengthening of cleaning workshop at Longfeng refinery, three structural schemes of platforms are provided in this paper, and finally steel girder-diagonal brace scheme is selected through comparative analysis. Load, material and selection of section size for platform structural members are given. Deformation and internal force of structure are obtained by theory and PKPM analysis, the reasonableness that the member section is selected is verified. Connection design and specific structural measures are given, and finally the reinforcement design and checking for the carbon fiber of the original frame column is carried out, and these can provide reference for similar Retrofitting Project.

Stress Analysis of a Tire Under Vertical Load by a Finite Element Method

1977 ◽  
Vol 5 (2) ◽  
pp. 102-118 ◽  
Author(s):  
H. Kaga ◽  
K. Okamoto ◽  
Y. Tozawa
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Computer Program ◽  
Temperature Rise ◽  
Strain Energy ◽  
Internal Stresses ◽  
Vertical Load ◽  
The Finite Element Method ◽  
Internal Temperature ◽  
Element Method

Abstract An analysis by the finite element method and a related computer program is presented for an axisymmetric solid under asymmetric loads. Calculations are carried out on displacements and internal stresses and strains of a radial tire loaded on a road wheel of 600-mm diameter, a road wheel of 1707-mm diameter, and a flat plate. Agreement between calculated and experimental displacements and cord forces is quite satisfactory. The principal shear strain concentrates at the belt edge, and the strain energy increases with decreasing drum diameter. Tire temperature measurements show that the strain energy in the tire is closely related to the internal temperature rise.

Dynamics of export potential of sunflower oil in Ukraine

Helia ◽  
2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Kateryna Vasylkovska ◽  
Olha Andriienko ◽  
Oleksii Vasylkovskyi ◽  
Andrii Andriienko ◽  
Popov Volodymyr ◽  
...  
Keyword(s):  
Climate Change ◽  
Comparative Analysis ◽  
Sunflower Oil ◽  
Climate Changes ◽  
Qualitative Change ◽  
Sunflower Seeds ◽  
Cultivation Technology ◽  
Selection Of

Abstract The analysis of the production and yield of sunflower seeds in Ukraine for the period from 2000 to 2019 was conducted in the article. The comparative analysis of the gross harvest of sunflower seeds and the export of sunflower oil for the years under research was carried out. The dependence of exports on gross harvest was revealed and its share was calculated. It was determined that the export of sunflower oil has increased over the years under research, which indicates a significant Ukraine’s export potential. It was found that the increase in the share of exports by 15.9% was made possible by a qualitative change in yield, that was ensured by the changes in the cultivation technology and by the selection of sunflower hybrids that are better adapted to climate changes. The recommendations for further improvement of cultivation technology in connection with climate change in order to further increase yields and the export potential of Ukraine were given.

Structure-Soil Interaction of Buried Corrugated Steel Arch Bridge

2010 ◽  
Vol 163-167 ◽  
pp. 2112-2117
Author(s):  
Miao Xin Zhang ◽  
Bao Dong Liu ◽  
Peng Fei Li ◽  
Zhi Mao Feng
Keyword(s):  
Finite Element ◽  
Steel Structures ◽  
Internal Force ◽  
Structural Deformation ◽  
Fe Model ◽  
Soil Pressure ◽  
Load Range ◽  
Finite Element Program ◽  
Load Conditions ◽  
Peak Value

Corrugated steel plate and surrounding soils are working together to share the load in buried corrugated steel structures. It is complicated to consider the structure-soil interaction, so the finite element method has already become the chief means of complicated structure analysis. Based on a practical project, considering structure-soil interaction, by using the finite element program of ANSYS, the paper set up a 2-D FE model and analyzed the soil pressure, the structural deformation and the internal force under different load conditions in detail. The analysis shows that structure-soil interaction has brought about stresses redistribution of surrounding soils, and adverse effects of soil pressure and displacement were limited. The variation range of soil pressure on the crown of arch increases with the load increases and the peak value of soil pressure approach to the code value and a rebound appears in the vehicle load range. The tendencies of vertical soil displacement are nearly the same to different load conditions, and the peak value of moments has an obvious change and can be influenced greatly by deflective load.

Selection of Degrees of Freedom for Dynamic Analysis

1987 ◽  
Vol 109 (1) ◽  
pp. 65-69 ◽  
Author(s):  
K. W. Matta
Keyword(s):  
Finite Element ◽  
Dynamic Analysis ◽  
Degrees Of Freedom ◽  
General Purpose ◽  
Component Mode Synthesis ◽  
Complex Structures ◽  
Large Complex ◽  
Static Condensation ◽  
Basis Vectors ◽  
Selection Of

A technique for the selection of dynamic degrees of freedom (DDOF) of large, complex structures for dynamic analysis is described and the formulation of Ritz basis vectors for static condensation and component mode synthesis is presented. Generally, the selection of DDOF is left to the judgment of engineers. For large, complex structures, however, a danger of poor or improper selection of DDOF exists. An improper selection may result in singularity of the eigenvalue problem, or in missing some of the lower frequencies. This technique can be used to select the DDOF to reduce the size of large eigenproblems and to select the DDOF to eliminate the singularities of the assembled eigenproblem of component mode synthesis. The execution of this technique is discussed in this paper. Examples are given for using this technique in conjunction with a general purpose finite element computer program GENSAM[1].

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