Study on Calculation Theory of Elastic Flexural-Torsional Buckling Bearing Capacity for Castellated Beams

2015 ◽  
Vol 744-746 ◽  
pp. 1635-1639
Author(s):  
Xiang Rong Chen ◽  
Hai Long Yuan ◽  
Xing Chen ◽  
Zhen Wen Liu
Keyword(s):  
Finite Element Analysis ◽  
Calculation Methods ◽  
Height Ratio ◽  
Torsional Buckling ◽  
Element Analysis ◽  
Buckling Loads ◽  
Buckling Strength ◽  
The Finite Element Analysis ◽  
Flexural Torsional Buckling ◽  
Abaqus Software

The structure of castellated beams is complex, using the computation theory of elastic flexural-torsional buckling of H-shaped beams to study the elastic flexural-torsional buckling strength of castellated beams under different loads, based on simplifying the section's eigenvalues. In addition to the theoretical investigation, the finite element analysis of the accurate critical loads of the beams had been done by the ABAQUS software, a comparison has been made between the calculated loads and analyzed results, error is smaller. Analyzing the effects that divergence ratio, depth-span ratio and distance-height ratio has on the elastic flexural-torsional buckling loads of castellated beams and draw out some reduced calculation methods for the section's eigenvalues and elastic flexural-torsional buckling critical load of castellated beams.

scholarly journals Analytical modelling of spatial deformation pathways in planar and spatial shallow bistable arches

2019 ◽  
Vol 475 (2227) ◽  
pp. 20190164
Author(s):  
Safvan Palathingal ◽  
G. K. Ananthasuresh
Keyword(s):  
Finite Element Analysis ◽  
Torsional Buckling ◽  
Element Analysis ◽  
Spatial Deformation ◽  
Transverse Bending ◽  
Generalized Framework ◽  
Torsion Energy ◽  
Critical Characteristics ◽  
Flexural Torsional Buckling ◽  
Energy Components

We analyse spatial bistable arches and present an analytical model incorporating axial, two transverse bending and torsion energy components. We extend the St. Venant and Michell relationship used in flexural-torsional buckling of planar arches and use it in modelling spatial arches. We study deformation pathways in spatial arches and their effect on critical characteristics of bistability such as back and forth switching forces, and the distance travelled by a point of the arch. We show that not considering spatial deformation leads to incorrect inferences concerning the bistability of planar arches too. Thus, this model serves as a generalized framework for the existing analysis on planar arches since they belong to a subset of spatial arches. Additionally, the effects of eccentric loading on spatial deformations are explored for arches with a range of as-fabricated shapes and boundary conditions, and the results are validated with finite-element analysis.

scholarly journals Experimental determination and finite element analysis of coefficients of the multi-parameter Williams series expansion in the vicinity of the crack tip in linear elastic materials. Part II

2021 ◽  
pp. 72-85
Author(s):  
L. V Stepanova
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Rectangular Plate ◽  
Series Expansion ◽  
Numerical Solutions ◽  
Element Analysis ◽  
Central Crack ◽  
The Finite Element Analysis ◽  
Abaqus Software

In this study coefficients of the multi-parameter Williams power series expansion for the stress field in the vicinity of the central crack in the rectangular plate and in the semi-circular notched disk under bending are obtained by the use of the finite element analysis. In SIMULIA Abaqus, the finite element analysis software, the numerical solutions for these two cracked geometries are found. The rectangular plate with the central crack has the geometry similar to the geometry used in the digital photoelasticity. Numerical simulations of the same cracked specimen as in the experimental photoelasticity method are performed. The numerical solutions obtained are utilized for the determination of the coefficients of the Williams series expansion. The higher-order coefficients are extracted from the finite element method calculations implemented in Simulia Abaqus software package and the outcomes are compared to experimental values. Determination of the coefficients of the terms of this series is performed using the least squares-based regression technique known as the over-deterministic method, for which stresses data obtained numerically in SIMULIA Abaqus software are taken as inputs. The plate with a small central crack has been considered either. This kind of the cracked specimen has been utilized for comparison of coefficients of the Williams series expansion obtained from the finite element analysis with the coefficients known from the theoretical solution based on the complex variable theory in plane elasticity. It is shown that the coefficients of the Williams series expansion match with good accuracy. The higher-order terms in the Williams series expansion for the semi-circular notch disk are found.

The Finite Element Analysis of Static Strength of Workover Derrick by Truck

2012 ◽  
Vol 503-504 ◽  
pp. 918-922 ◽  
Author(s):  
Zhi Liu ◽  
Ke Yao ◽  
Di Wu ◽  
Dong Li ◽  
Jiu Yan Fu ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Wind Load ◽  
Static Strength ◽  
Weak Links ◽  
Strength Analysis ◽  
Element Analysis ◽  
The Finite Element Analysis ◽  
Simulated Calculation ◽  
Abaqus Software

Conventionally, the influence of guy wire and wind load on derrick was often ignored in the static strength analysis of derrick of truck-mounted workover rig, it does not accord with the actual working conditions. This paper made the finite element analysis for one derrick of Truck-mounted workover rig through ABAQUS software. The author derive the maximum static hock load which derrick can bear, and reasonably shorten projective radius of guy wire, under different static hock load and wind load, determining the weakest position of derrick. Truck-mounted workover rigs are widely used in the filed of workover and drilling operation, due to their characteristic of power maneuverability and convenient to use. Derrick is the mainly working part of workover rig, as well as the weak links of workover. In order to guarantee relatively high security performance, we should accurately make simulated calculation for carrying capacity of derrick in the process of designing. The author derive the maximum static hock load which derrick can bear, and reasonably shorten projective radius of guy wire, by using the ABAQUS FEM system, apply for statics analysis of derrick under different static hock load and wind load.

Finite Element Analysis of the Biaxial Tensile Specimen of Woven Architectural Membrane Material

2012 ◽  
Vol 557-559 ◽  
pp. 830-834
Author(s):  
Rong Ping Cao ◽  
Hong Lei Yi
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Test Specimen ◽  
Nonlinear Problems ◽  
Tensile Specimen ◽  
Membrane Material ◽  
Element Analysis ◽  
Tensile Test Specimen ◽  
The Finite Element Analysis ◽  
Abaqus Software

The finite element analysis (FEA) has been widely used in research and production. It is well known that ABAQUS software is famous for its capacity of solving nonlinear problems. Create the test specimen model that is based on biaxial cross tensile test specimen of woven architectural membrane material by the ABAQUS software. The effects of the fillet radius(R), the width of the specimen (W), the length (L) and the number (N) of the crack are considered. It is found that while the whole specimen is 180*180mm it is most uniform when the R is 5mm, the W is 60mm, the L is about 60mm and the N is 5.

The Finite Element Analysis of Mechanical Behavior of New Connection

2014 ◽  
Vol 1065-1069 ◽  
pp. 1281-1284
Author(s):  
Chun Gang Wang ◽  
Xu Wang ◽  
Guo Chang Li ◽  
Jin Guo Wu
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Mechanical Behavior ◽  
New Wave ◽  
Calculation Methods ◽  
Element Analysis ◽  
The Finite Element Analysis ◽  
Simulation Results ◽  
Vibration Wave ◽  
Better Than

Purlin connections have important influence on the stiffness, bearing capacity and the purlin calculation methods. A new kind of purlin connection was put forward in this paper. The mechanical behavior of the new connection was studied by finite element analysis using software ANSYS. As can be seen from the simulation results, the new connection can enhance the stiffness of purlin, and effect of each new wave connection is better than the promotion of purlin stiffness in the vibration wave connection. New connection has a better promotion effect for small stiffness of purlin.

The Research on the Stress Concentration Factor of T-Joints Subjected to Axial Load

2010 ◽  
Vol 163-167 ◽  
pp. 460-464 ◽  
Author(s):  
Jia Zhang ◽  
Shu Ying Qu ◽  
Guo Dong Zhang ◽  
Hao Liu
Keyword(s):  
Finite Element Analysis ◽  
Stress Concentration ◽  
Stress Concentration Factor ◽  
Concentration Factor ◽  
Axial Load ◽  
Geometrical Parameters ◽  
Element Analysis ◽  
T Joints ◽  
The Finite Element Analysis ◽  
Abaqus Software

By terms of the numerical modeling of ABAQUS software, the analysis of the stress concentration factor (SCF) of tubular T-joints subjected to axial load is analyzed in this paper. The magnitude and the distribution of the SCF are also obtained. Through the finite element analysis of 816 models, the effect of geometrical parameters on the value and distribution of the SCF is investigated. Then based on these results, the parametric equations of the maximal SCF and SCF distribution for T-joints subjected to axial load are presented. Error analysis of these parametric equations is also carried out.

Tread Depth Effects on Tire Rolling Resistance

2001 ◽  
Vol 29 (3) ◽  
pp. 134-154 ◽  
Author(s):  
J. R. Luchini ◽  
M. M. Motil ◽  
W. V. Mars
Keyword(s):  
Finite Element Analysis ◽  
Common Knowledge ◽  
Rolling Resistance ◽  
Test Method ◽  
Tire Model ◽  
Element Analysis ◽  
Truck Tires ◽  
The Finite Element Analysis ◽  
Equilibrium Test ◽  
Depth Effects

Abstract This paper discusses the measurement and modeling of tire rolling resistance for a group of radial medium truck tires. The tires were subjected to tread depth modifications by “buffing” the tread surface. The experimental work used the equilibrium test method of SAE J-1269. The finite element analysis (FEA) tire model for tire rolling resistance has been previously presented. The results of the testing showed changes in rolling resistance as a function of tread depth that were inconsistent between tires. Several observations were also inconsistent with published information and common knowledge. Several mechanisms were proposed to explain the results. Additional experiments and models were used to evaluate the mechanisms. Mechanisms that were examined included tire age, surface texture, and tire shape. An explanation based on buffed tread radius, and the resulting changes in footprint stresses, is proposed that explains the observed experimental changes in rolling resistance with tread depth.

Interactive Graphics for the Analysis of Tires

1985 ◽  
Vol 13 (3) ◽  
pp. 127-146 ◽  
Author(s):  
R. Prabhakaran
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Approximate Solutions ◽  
Interactive Graphics ◽  
Element Analysis ◽  
Analysis Process ◽  
Physical Problems ◽  
The Finite Element Analysis ◽  
Analysis Computer ◽  
Discretization Technique

Abstract The finite element method, which is a numerical discretization technique for obtaining approximate solutions to complex physical problems, is accepted in many industries as the primary tool for structural analysis. Computer graphics is an essential ingredient of the finite element analysis process. The use of interactive graphics techniques for analysis of tires is discussed in this presentation. The features and capabilities of the program used for pre- and post-processing for finite element analysis at GenCorp are included.

Finite Element Analysis of Nonuniformity of Tires with Imperfections5

2007 ◽  
Vol 35 (3) ◽  
pp. 226-238 ◽  
Author(s):  
K. M. Jeong ◽  
K. W. Kim ◽  
H. G. Beom ◽  
J. U. Park
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Three Dimensional ◽  
Element Model ◽  
Radial Force ◽  
Element Analysis ◽  
The Finite Element Analysis ◽  
Dimensional Finite Element ◽  
Force Variation ◽  
Three Dimensional Finite Element

Abstract The effects of variations in stiffness and geometry on the nonuniformity of tires are investigated by using the finite element analysis. In order to evaluate tire uniformity, a three-dimensional finite element model of the tire with imperfections is developed. This paper considers how imperfections, such as variations in stiffness or geometry and run-out, contribute to detrimental effects on tire nonuniformity. It is found that the radial force variation of a tire with imperfections depends strongly on the geometrical variations of the tire.

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