Under the Action of Earthquake Mechanics Analysis of the Infill Wall in Plane

2013 ◽  
Vol 385-386 ◽  
pp. 396-399
Author(s):  
Hao Cheng ◽  
Xiao Dong Yang
Keyword(s):  
Finite Element ◽  
Development Trend ◽  
Calculation Model ◽  
Solid Model ◽  
Infill Wall ◽  
Finite Element Software ◽  
Earthquake Mechanics ◽  
Mechanics Analysis ◽  
Model Element ◽  
Elastic Mechanics

Using finite element software SAP2000 solid model element to simulate the infill walls filled wall by the elastic conditions, and to simplify the calculation model, the use of elastic mechanics calculated infill wall subjected to earthquake plane wall crack development trend of the structure designed to prevent cracks in the wall of the measures will certainly help.

scholarly journals Development Trend and Stability Analysis of Creep Landslide With Obvious Slip Zone Under Rainfall-Taking Xinchang Xiashan Basalt Slope as an Example

2022 ◽  
Vol 9 ◽  
Author(s):  
Chunyan Bao ◽  
Lingtao Zhan ◽  
Yingjie Xia ◽  
Yongliang Huang ◽  
Zhenxing Zhao
Keyword(s):  
Numerical Simulation ◽  
Finite Element ◽  
Stability Analysis ◽  
Soil Layer ◽  
Heavy Rain ◽  
Development Trend ◽  
Sliding Surface ◽  
Landslide Area ◽  
Finite Element Software ◽  
Sliding Zone

The creep slope is a dynamic development process, from stable deformation to instability failure. For the slope with sliding zone, it generally creeps along the sliding zone. If the sliding zone controlling the slope sliding does not have obvious displacement, and the slope has unexpected instability without warning, the harm and potential safety hazard are often much greater than the visible creep. Studying the development trend of this kind of landslide is of great significance to slope treatment and landslide early warning. Taking Xiashan village landslide in Huishan Town, Xinchang County, Zhejiang Province as an example, the landslide point was determined by numerical simulation in 2006. Generally, the landslide is a typical long-term slow deformation towards the free direction. Based on a new round of investigation and monitoring, this paper shows that there are signs of creeping on the surface of the landslide since 2003, and there is no creep on the deep sliding surface. The joint fissures in the landslide area are relatively developed, and rainfall infiltration will soften the soft rock and soil layer and greatly reduce its stability. This paper collects and arranges the rainfall data of the landslide area in recent 30 years, constructs the slope finite element model considering rainfall conditions through ANSYS finite element software, and carries out numerical simulation stability analysis. The results show that if cracks appear below or above the slope’s sliding surface, or are artificially damaged, the sliding surface may develop into weak cracks. Then, the plastic zone of penetration is offset; In the case of heavy rain, the slope can unload itself under the action of rainfall. At this time, the slope was unstable and the landslide happened suddenly.

Analysis of Jib Strength and Broken Jib Accident of High Pedestal Jib Crane from the Perspective of Mechanics

2012 ◽  
Vol 164 ◽  
pp. 322-325 ◽  
Author(s):  
Qing Dun Zeng ◽  
Fang Liu
Keyword(s):  
Finite Element ◽  
Working Conditions ◽  
Tensile Force ◽  
Compressive Force ◽  
Guangdong Province ◽  
Solid Model ◽  
Finite Element Software ◽  
Actual Working

According to an example of the broken jib accident of a high pedestal jib crane (HM2564) in a Shipyard Co., Ltd. in Guangdong province, this paper used a finite element software ANSYS to establish a solid model for the jib frame of the crane, calculated the stresses of jib system under various actual working conditions and checked the strengths. Simultaneously, the reasons of broken jib were quantitatively analyzed from the perspective of mechanics. The results show that the strengths of the jib system meet the requirements of safe use under all kinds of working conditions, but the related hoistman incorrectly operated the facility, cables can’t be winded normally in pulleys, thus resulting in that the tensile force of a cable was directly applied on the main jib by pulley spindle and the failure of the jib frame occurred under heavy compressive force of lifting cables.

scholarly journals Experimental Study and Theoretical Analysis on Flexural Mechanical Propertiesof Reinforced Timber Beams

2018 ◽  
Vol 27 (1) ◽  
pp. 096369351802700
Author(s):  
Xiong Xueyu ◽  
Wang Yiqingzi ◽  
Xue Rongjun ◽  
Lu Xuanxing
Keyword(s):  
Finite Element ◽  
Bearing Capacity ◽  
Failure Modes ◽  
Theoretical Calculations ◽  
Development Trend ◽  
Ultimate Bearing Capacity ◽  
Bending Test ◽  
Element Analysis ◽  
Finite Element Software ◽  
Reinforced Beams

As Chinese architecture masterpiece, ancient Hui-style architecture is the admiration for Chinese and foreign master builders. According to the bending test, the theoretical calculations and Abaqus finite element analysis on 5 Hui-style architecture beams, this paper points out the differences between un-reinforced beams and reinforced beams on ultimate bearing capacity, deflection and other performance indicators. The reinforcement methods of embedding steel bars, embedding CFRP bars and pasting CFRP plate can respectively improve the ultimate bearing capacity by 20.2%, 32.6% and 37.0%. Based on the plane section assumption and considering thereduction of tensile strength causedby wood knots and defects in tension zone, this paper predicts failure modes of the test beams may occur, and gives the ultimate bearing capacity of different failure modes. In addition, this paper uses the Abaqus finite element software for simulating test beams, and the development trend of load-deflectioncurve between the test and numerical simulation are in good agreement, providing reference for further research of Hui-style architecture.

scholarly journals Finite Element Analysis of RC Beams by the Discrete Model and CBIS Model Using LS-DYNA

2021 ◽  
Vol 2021 ◽  
pp. 1-9
Author(s):  
Seung H. Yang ◽  
Kwang S. Woo ◽  
Jeong J. Kim ◽  
Jae S. Ahn
Keyword(s):  
Finite Element ◽  
Discrete Model ◽  
Kinematic Hardening ◽  
Material Model ◽  
General Purpose ◽  
Solid Model ◽  
Element Analysis ◽  
Explicit Finite Element ◽  
Finite Element Software ◽  
Concrete Elements

There are several techniques to simulate rebar reinforced concrete, such as smeared model, discrete model, embedded model, CLIS (constrained Lagrange in solid) model, and CBIS (constrained beam in solid) model. In this study, however, the interaction between the concrete elements and the reinforcement beam elements is only simulated by the discrete model and CBIS (constrained beam in solid) model. The efficiency and accuracy comparisons are investigated with reference to the analysis results by both models provided by LS-DYNA explicit finite element software. The geometric models are created using LS-PrePost, general purpose preprocessing software for meshing. The meshed models are imported to LS-DYNA where the input files are then analyzed. Winfrith and CSCM concrete material options are employed to describe the concrete damage behavior. The reinforcement material model is capable of isotropic and kinematic hardening plasticity. The load versus midspan deflection curves of the finite element models correlate with those of the experiment. Under the conditions of the same level of accuracy, the CBIS model is evaluated to have the following advantages over the discrete model. First, it has the advantage of reducing the time required for FE modeling; second, saving computer CPU time due to a reduction in total number of nodes; and third, securing a good aspect ratio of concrete elements.

Numerical Calculation of Soil Pressure inside the Lattice Type Steel Sheet Pile Wharf Structure

2013 ◽  
Vol 405-408 ◽  
pp. 1427-1430
Author(s):  
Jin Song Gui ◽  
Yu Fu ◽  
En Kai Bi
Keyword(s):  
Finite Element ◽  
Numerical Calculation ◽  
Steel Sheet ◽  
Engineering Application ◽  
Calculation Model ◽  
Sheet Pile ◽  
Soil Pressure ◽  
Type Steel ◽  
Finite Element Software ◽  
Lattice Type

Lattice type steel sheet pile wharf is a new type of wharf structure, which is increasingly and widely used, but its structure is complicated, and the calculation theory is not perfect. This paper uses the general finite element software ABAQUS to establish the finite element numerical calculation model of grid shape steel sheet pile structure. The result was deeply researched and analysed,so some useful conclusions are drawn that can be used as references in the engineering application.

Analysis on Strength, Stiffness and Stability for Shippment Structure of Hull Subsection

2012 ◽  
Vol 166-169 ◽  
pp. 1019-1022
Author(s):  
Qing Dun Zeng ◽  
Meng Hua Qiao
Keyword(s):  
Finite Element ◽  
Working Conditions ◽  
Theoretical Foundation ◽  
Horizontal Displacement ◽  
Internal Force ◽  
National Standards ◽  
Solid Model ◽  
Safety Requirements ◽  
Finite Element Software ◽  
Actual Working

In allusion to the safety problems of the shippment structure of hull subsection at area B in a Shipyard Co., Ltd., Guangdong, in this paper, a solid model for a proposed shippment structure of hull subsection was established by using a finite element software ANSYS which is a common software, the internal force (stress), deformation and stability of components under various actual working conditions were calculated, and then the checks of strength, stiffness and stability were performed on the basis of the national regulations. The results show that both strength and stability can meet the safety requirements of operation, but stiffness is insufficient, because the horizontal displacement of steel pillars in shippment structure oversteps the specified value of the national standards of China. The conclusion provides a theoretical foundation for the safety use of shippment structure of hull subsection and the optimization and improvement of the structure.

A Type of Bomb Falling Analysis and Reliability Verification

2012 ◽  
Vol 215-216 ◽  
pp. 771-774
Author(s):  
Qiu Xiang Chang
Keyword(s):  
Finite Element ◽  
Reliability Analysis ◽  
Three Dimensional ◽  
Solid Model ◽  
Stress And Strain ◽  
Finite Element Software ◽  
Reliability Verification

Using UG to build a shell of the three-dimensional solid model, using the finite element software on the solid floor is analyzed, the shells fall into 8 drop, respectively, to various forms of stress and strain were compared, and the shells of the reliability analysis.

Analysis on the Causes of Cracks on the Concrete Structure of Large and Medium-Sized Pumping Station

2012 ◽  
Vol 486 ◽  
pp. 484-491
Author(s):  
Qiu Lin Cao ◽  
Yong Fa Ma
Keyword(s):  
Finite Element ◽  
Numerical Calculation ◽  
Concrete Structure ◽  
Calculation Model ◽  
Pumping Station ◽  
Root Cause ◽  
Finite Element Software ◽  
Stress And Deformation ◽  
Station Structure

This paper mainly introduces that the overall simulation and numerical calculation model which includes the system of pumping station and groundwork is built to study the concrete structure of pumping station with 3-D finite element software Marc. By undertaking a study on stress and deformation of pumping station structure and combining the living example, the root cause of cracks is raised. By calculating and studying, the overall strength and displacement of structure can be reflected more intuitively and accurately with the method of 3-D finite element.

Research and Analysis of Ship-Bridge Collision

2014 ◽  
Vol 638-640 ◽  
pp. 973-976 ◽  
Author(s):  
Kuo Liu ◽  
Gang Yang ◽  
Ke Yang
Keyword(s):  
Finite Element ◽  
Transient Analysis ◽  
Large Scale ◽  
Calculation Model ◽  
Finite Element Software ◽  
Collision Force

In this paper, based on the theory of ship-bridge collision, large-scale finite element software ANSYS is adopted to establish the calculation model of the bridge.According to the specification of our country, the calculation of bridge collision force then compares with the actual situation.Through the calculation of collision force, the ship-bridge collision is transformed into the problem of transient analysis of collision point.This article is mainly to analyze the change of bridge energy and the stress and displacement of main parts of the bridge. Finally, this article puts forward the personal vision.

Feasibility of Substructure Pseudo Dynamic Test on the Tanks in Seismic Research

2013 ◽  
Vol 405-408 ◽  
pp. 1063-1066
Author(s):  
Li Jian Zhou ◽  
Bin Gao ◽  
Yuan Gang Fan ◽  
Xiang Ying Wang
Keyword(s):  
Finite Element ◽  
Structural Analysis ◽  
Dynamic Response ◽  
Dynamic Analysis ◽  
Complex Structure ◽  
Dynamic Test ◽  
Calculation Model ◽  
Finite Element Software ◽  
Substructure Analysis ◽  
Complete Calculation

Modern structures tend to be more and more complicated, setting up the complete calculation model and getting each part of the dynamic response is almost impossible and unnecessary. The substructure analysis technology is effective for the dynamic analysis of large and complex structure. The substructure theory has become increasingly mature and perfect, and has been widely used in structural analysis and calculation. This article simply introduces the principle of substructure pseudo dynamic test, and using the finite element software—ADINA simulates a steel frame.

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