Finite element-based parametric analysis of mat foundations

2014 ◽  
pp. 693-697 ◽  
Author(s):  
S Tabsh ◽  
M El-Emam
Keyword(s):  
Finite Element ◽  
Parametric Analysis ◽  
Mat Foundations

Numerical analyses on mechanical performance of flat buried approach slab and soil deformation

2021 ◽  
Author(s):  
Junqing Xue ◽  
Dong Xu ◽  
Yufeng Tang ◽  
Bruno Briseghella ◽  
Fuyun Huang ◽  
...  
Keyword(s):  
Finite Element ◽  
Tensile Stress ◽  
Parametric Analysis ◽  
Mechanical Performance ◽  
Element Model ◽  
Soil Deformation ◽  
Longitudinal Deformation ◽  
Expansion Joints ◽  
Approach Slab ◽  
Jointless Bridges

<p><br clear="none"/></p><p>The vulnerability problem of expansion joints could be fundamentally resolved using the concept of jointless bridges. The longitudinal deformation of the superstructure can be transferred to the backfill by using the approach slab. The flat buried approach slab (FBAS) has been used in many jointless bridges in European countries. In order to understand the mechanical performance of FBAS and soil deformation, a finite element model (FEM) was implemented in PLAXIS. Considering the friction between the FBAS and soil, the buried depth, the FBAS length and thickness as parameters, a parametric analysis was carried out. According to the obtained results and in order to reduce the soil deformation above the FBAS, it is suggested to increase the friction between the FBAS and sandy soil, and the buried depth of FBAS. Moreover, it should be paid attention to the vertical soil deformation and the concrete tensile stress of FBAS in pulling condition.</p>

Parametric analysis and finite element modelling for shear behavior of positive haunched RC beams

2021 ◽  
Author(s):  
Maryam H. Naser ◽  
Mayadah W. Falah ◽  
Alaa Adnan Hafedh ◽  
Fatimah H. Naser
Keyword(s):  
Finite Element ◽  
Finite Element Modelling ◽  
Parametric Analysis ◽  
Shear Behavior ◽  
Rc Beams ◽  
Element Modelling

scholarly journals Investigation and Improvement of Bursting Force Equations in Posttensioned Anchorage Zone

2019 ◽  
Vol 2019 ◽  
pp. 1-11
Author(s):  
Young Hak Lee ◽  
Min Sook Kim
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Parametric Analysis ◽  
Local Stress ◽  
Element Analysis ◽  
Bearing Plate ◽  
Concrete Members ◽  
Transverse Tensile ◽  
Posttensioned Concrete ◽  
Eccentric Distance

In posttensioned concrete members, the high local stress under the anchorage causes transverse tensile stress. Therefore, it is very important to predict the bursting force to determine appropriate reinforcement details. In the present work, the existing equations of the bursting force for the anchorage zone were evaluated and an equation for the bursting force based on finite element analysis was proposed to improve the model’s accuracy. Parametric analysis was performed considering the anchorage shape, tendon angle, and eccentric distance. The analytical results indicate that the existing equations underestimate or overestimate the bursting force. The proposed equation is able to predict the bursting force reasonably well for an anchorage zone with rectangular bearing plate, cavity, and eccentric distance.

The Establishing and Structural Analysis for Torque Shaft of the Shearer Based on Inventor and Algor

2013 ◽  
Vol 397-400 ◽  
pp. 662-667
Author(s):  
Jian Zhang ◽  
Xiang Xiang Zhang ◽  
Xiao Ying Liu
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Parametric Analysis ◽  
Groove Depth ◽  
Dual Function ◽  
Analysis Software ◽  
Element Analysis ◽  
Model Interaction ◽  
Overload Protection ◽  
Torque Transmission

The torque shaft of shearer cutting part plays a dual-function of torque transmission and overload protection when the Shearer is working. Therefore it is necessary to study the reliability of the torque shaft. First, the parameterized torque shaft model was built on Inventor and simple parametric analysis of the torque shaft was done by its finite element analysis module. The unloading groove depth 5.079mm met the overload protection requirements. Then the model was imported into professional finite element analysis software Algor to verify the results. Linear statics analysis in Algor showed that when unloading groove depth valued 5.479mm the torque shaft would be broken once the shearer overload. The results of the analysis were reliable as no data was lost during the model interaction between Inventor and Algor.

Parametric analysis and calculation method for bending and shear capacities of innovative composite shear walls

2016 ◽  
Vol 20 (7) ◽  
pp. 1046-1058 ◽  
Author(s):  
ZH Chen ◽  
YT Jiang ◽  
XM Zhang ◽  
QY Yang ◽  
WB Li
Keyword(s):  
Finite Element ◽  
Parametric Analysis ◽  
Shear Wall ◽  
Shear Capacity ◽  
Statistical Regression ◽  
Structural Wall ◽  
Shear Span ◽  
Finite Element Software ◽  
Composite Shear Wall ◽  
Composite Shear

The bundled lipped channel-concrete composite wall is an innovative structural wall. This wall has a series of advantages, such as convenient construction and high bearing capacity. Seven full-scaled specimens were tested and subjected to cyclic lateral loads. ABAQUS, which is a finite-element software, was used to simulate the test process. Hysteretic curves and skeleton curves were obtained. This process proved that the simulation effect of finite element was good. A parametric analysis was conducted on this composite shear wall to determine the effect of the wall under different parameters, such as the axial load ratio, the shear span ratio, and the intensity of steel and concrete. The formula for the bending capacity of normal section was deduced. The failure mode and factors that affect the shear capacity of the composite shear wall at a low shear span ratio were analyzed to obtain the composition of the shear capacity. Based on the superposition theory and statistical regression, the formula for the shear capacity of the inclined section was obtained.

scholarly journals Locating and Classifying Defects with Artificial Neural Networks

2008 ◽  
Vol 13-14 ◽  
pp. 117-123 ◽  
Author(s):  
A. Luna Avilés ◽  
Luis Héctor Hernández-Gómez ◽  
J.F. Durodola ◽  
G. Urriolagoitia-Calderón ◽  
G. Urriolagoitia-Sosa
Keyword(s):  
Neural Networks ◽  
Finite Element Method ◽  
Finite Element ◽  
Parametric Analysis ◽  
Input Data ◽  
Natural Frequencies ◽  
Synthetic Data ◽  
The Finite Element Method ◽  
Backpropagation Algorithm ◽  
Neuro Fuzzy

Locating defects and classifying them by their size was done with an Adaptive Neuro Fuzzy Procedure (ANFIS). Postulated void of three different sizes (1x1 mm, 2x2 mm and 2x1 mm) were introduced in a bar with and without a notch. The size of a defect and its localization in a bar change its natural frequencies. Accordingly, synthetic data was generated with the finite element method. A parametric analysis was carried out. Only one defect was taken into account and the first five natural frequencies were calculated. 495 cases were evaluated. All the input data was classified in three groups. Each one has 165 cases and corresponds to one of the three defects mentioned above. 395 cases were taken randomly and, with this information, the ANN was trained with the backpropagation algorithm. The accuracy of the results was tested with the 100 cases that were left. This procedure was followed in the cases of the plain bar and a bar with a notch. In the next stage of this work, the ANN output was optimized with ANFIS. The accuracy of the localization and classifications of the defects was improved.

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