Explosion Simulation and Analysis of Coal Mine Rescue Capsule

2011 ◽  
Vol 143-144 ◽  
pp. 536-540
Author(s):  
Xu Dong Yang ◽  
Liang Liang Jin ◽  
Jia Chun Li ◽  
Dong Sun
Keyword(s):  
Coal Mine ◽  
Maximum Stress ◽  
Integration Method ◽  
Structural Strength ◽  
Stress Singularity ◽  
Element Model ◽  
Explicit Integration ◽  
Allowable Range ◽  
The Finite Element Model ◽  
Mine Rescue

Coal mine rescue capsules, whose structural strength defines miners' safety directly, are becoming important equipments for miners' underground escaping. In order to improve the rescue capsule's strength, in this study the finite element model was established in ABAQUS environment, and the influence on rescue capsule made by the pressure of gas explosion was obtained by using explicit integration method. The maximum stress of rescue capsule appears at the corner where it has stress singularity and the central part of the stiffeners where the stress reached the yield strength. But the overall stress is within the allowable range.

Lightweight Design for Coal Mine Rescue Robot’s Swing Arm Brackets

2014 ◽  
Vol 496-500 ◽  
pp. 657-661
Author(s):  
Chuan Wei Wang ◽  
Hong Wei Ma
Keyword(s):  
Coal Mine ◽  
Maximum Stress ◽  
Lightweight Design ◽  
Element Model ◽  
Swing Arm ◽  
Simulating Analysis ◽  
Cutting Out ◽  
Reduce Energy Consumption ◽  
Rescue Robots ◽  
Mine Rescue

By analyzing the force of the Coal Mine Rescue Robots swing arm brackets, the maximum torques of the Coal Mine Rescue Robots swing arm brackets are calculated, the results are applied into finite element model, the maximum stress of brackets are much smaller than allowable stresses of the materials, so there is a large optimise space. Optimum design of Swing Arm Brackets are carried out by changing materials and dimensions. After simulating analysis, it can be seen that the lightweight design for out-bracket have better effect through cutting out materials rather than changing its materials. The results of this optimization may conserve materials and reduce energy consumption. And it has significant in successfully applying the robot into the coal mine underground after disasters and improving the using time of the batteries.

Finite Element Analysis of Structural Strength of Concrete Mixing Truck’s Frame

2014 ◽  
Vol 945-949 ◽  
pp. 1143-1149
Author(s):  
Hai Xia Sun ◽  
Hua Kai Wei ◽  
Xiao Fang Zhao ◽  
Jia Rui Qi
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Finite Element Model ◽  
Structural Strength ◽  
Element Model ◽  
Basic Element ◽  
Operating Conditions ◽  
Frame Structure ◽  
Element Analysis ◽  
The Finite Element Model

The finite element model of the concrete mixing truck’s frame is builded by using shell as basic element, and the process of building the finite element model of the balance suspension is introduced in detail. Based on this, frame’s stress on five types of typical operating conditions are calculated by using the finite element analysis software, NASTRAN, and results can show the dangerous position and the maximum stress position on the frame. The analysis result on structural strength can provide the basis for further improving the frame structure.

Design and Analysis on Stiffeners of Coal Mine Rescue Capsules

2011 ◽  
Vol 143-144 ◽  
pp. 443-447
Author(s):  
Jian Feng Lu ◽  
Liang Liang Jin ◽  
Xu Dong Yang ◽  
Dong Sun
Keyword(s):  
Finite Element ◽  
Coal Mine ◽  
Structural Strength ◽  
Installation Space ◽  
Mechanical Theory ◽  
Maximum Deformation ◽  
Advantages And Disadvantages ◽  
Finite Element Software ◽  
Practical Factors ◽  
Mine Rescue

Coal mine rescue capsules, whose structural strength defines miners' safety directly, are becoming important equipments for miners' underground surviving. In order to improve the rescue capsule's strength, in this study two different kinds of stiffeners were put forward. The advantages and disadvantages of their performances were analyzed and compared using mechanical theory and the theoretical analysis was simulated and verified by using finite element software ABAQUS. The maximum deformation using two different kinds of stiffeners were 1.385mm and 2.26mm. Considering the size of deformation combined with practical factors, such as installation space and ease of processing etc., T-shaped stiffeners were finally adopted. Introduction

Mechanics Analysis and Optimization of the Reachstacker Spreader

2014 ◽  
Vol 1078 ◽  
pp. 266-270
Author(s):  
Yu Feng Shu ◽  
Yong Feng Zheng
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Maximum Stress ◽  
Element Model ◽  
Static Strength ◽  
Operating Conditions ◽  
Mechanics Analysis ◽  
Calculation Results ◽  
Improvement Measures ◽  
The Finite Element Model

This paper establishes the finite element model of reachstacker spreader, makes static strength calculation under eight typical operating conditions with rated load, based on the calculation results, it points out the weaknesses of spreader and gives some corresponding improvement measures for the drawbacks. Further analysis shows that the maximum stress of improved spreader mechanism has reduced 10.1%, which demonstrates the effectiveness of improvements.

Increase of Fatigue on Piston and Connecting Rod in Using Supercharger

2012 ◽  
Vol 622-623 ◽  
pp. 1243-1247
Author(s):  
Shahed Torkamandi ◽  
Farhad Asadi ◽  
Gholamhasan Payganeh
Keyword(s):  
Maximum Stress ◽  
Material Model ◽  
Element Model ◽  
Connecting Rod ◽  
Piston Engine ◽  
Analysis Techniques ◽  
Linear Material ◽  
The Cost ◽  
Strength And Durability ◽  
The Finite Element Model

This research deals with analysis the fatique and the failure of piston engine using FEA.The objective of this research is to develop the geometry of piston engine using solidwork software and to investigate the maximum stress using stress analysis techniques to predict the failure of piston and connecting rod and identify the critical locations of the components of EF7 engine with supercharger and without supercharger. The finite element model of the components was analyzed the static stress with linear material model . first we discuss the amount of increased pressure in cylinder by supercharger and turbocharger then the influence of the inlet air pressure on the naturall aspirated engine which the main parts of its engine are not reinforced is taken account,then the result is showed the stress is increased by quantity of 273 MPA on piston and connecting rod which make the increase of fatigue on pistons and connecting rod and decrease in its period of working.The results can also significantly reduce the cost to produce the piston,and improve product reliability and improve the fatique strength and durability.

A Shape Optimization Method Based on Implicit Differentiation and Node Removal Techniques

1996 ◽  
Vol 118 (1) ◽  
pp. 154-157 ◽  
Author(s):  
P. Y. Shim ◽  
S. Manoochehri
Keyword(s):  
Maximum Stress ◽  
Element Model ◽  
Optimization Method ◽  
Programming Algorithm ◽  
Structural Members ◽  
Binary Decision ◽  
Optimal Shapes ◽  
Linear Programming Algorithm ◽  
Node Removal ◽  
The Finite Element Model

This paper presents a methodology for the generation of optimal shapes of structural members. This work is based on altering the finite element model of the structure by removing or restoring nodes to generate optimum designs subject to constraints on maximum stress value and maintenance of connectivity in the model. A sequential linear programming algorithm is utilized to determine optimum positions of the boundary nodes. Based on the results, at each iteration a binary decision is performed to determine which nodes should be removed or restored. A correction factor is used in this study to compensate for the error caused by linearization of the stress function.

Densification Behaviour Modelling for Metallic Powders

2014 ◽  
Vol 802 ◽  
pp. 317-322 ◽  
Author(s):  
Maria Carolina dos Santos Freitas ◽  
José Adilson de Castro ◽  
Luciano Pessanha Moreira ◽  
Flávia de Paula Vitoretti
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Finite Element Model ◽  
Element Model ◽  
Porous Metals ◽  
Explicit Integration ◽  
Element Analysis ◽  
Conventional Press ◽  
Powder Forming ◽  
The Finite Element Model

Powder forming involves fabrication of a preform by conventional press-and-sinter processing, followed by various forming processes, citing as examples, rolling, compaction, forging, extrusion, among others, of the porous preform into a final shape through substantial densification. This work makes a finite element analysis for porous metals. The finite element model was applied to simulating the case of compaction of nanocristalline copper under uniaxial compression conditions in order investigate the densification behavior. The model was simulated using explicit integration method as applied to the evolution variation of the relative density and the dislocation density of the compact. Finite element analysis program used was Abaqus. Finite element calculations were compared with literature data. The agreements between finite element model and literature results for densification of nanocristalline copper were good.

Application of a Nonlinear Data-Driven Model to Rapid Design of Disc-Spring Valve Systems

2012 ◽  
Vol 452-453 ◽  
pp. 1365-1369
Author(s):  
Piotr Czop ◽  
Damian Slawik ◽  
Grzegorz Wszołek ◽  
Dawid Jakubowski ◽  
Antoni Skrobol
Keyword(s):  
Finite Element ◽  
Entire Range ◽  
Maximum Stress ◽  
Element Model ◽  
Analytical Tool ◽  
Data Driven ◽  
First Principle ◽  
Element Approach ◽  
The Finite Element Model ◽  
Disc Spring

This paper proposes an analytical tool that supports the design process of a disc spring valve system used in car dampers. The proposed analytical tool obtains a key design characteristic of a valve, which is the flow rate and the corresponding maximum stress level in the stack of plates, as a function of a pressure load. The tool is prepared based on the cases produced by a first-principle model using a finite element approach. The finite element model was calibrated based on experimental results to provide accurate results in the entire range of input parameters.

Study on Random Vibration Response Analysis for the Sphere Cylinder Assembly in Aerospace Vehicle

2014 ◽  
Vol 680 ◽  
pp. 258-262
Author(s):  
De Lin Sun ◽  
Zhe Zhao ◽  
Kun He ◽  
Ri Dong Liao
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Basic Principle ◽  
Random Vibration ◽  
Structural Strength ◽  
Element Model ◽  
Vibration Response ◽  
Response Analysis ◽  
Vibration Load ◽  
The Finite Element Model

To assess the structural strength of spherical cylinder, the finite element model was constructed by the NX NASTRAN software. Firstly,the basic principle of random vibration response analysis was introduced, then the random vibration response analysis of the cylinder assembly was analyzed. The simulation result shows that the stress of the joint between spherical cylinder clamp and the base is larger than other areas in conditions of a given random vibration load. The spherical cylinder structure is safe and that the maximum RMS stress is about 20 MPa.

scholarly journals Analisis Tegangan City Electric Car Torsi Beam Suspension Menggunakan Metode Finite Element Model (FEM)

Infotekmesin ◽  
2021 ◽  
Vol 12 (1) ◽  
pp. 93-97
Author(s):  
Sigit Setijo Budi ◽  
Agus Suprihadi ◽  
Syarifudin Syarifudin
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Maximum Stress ◽  
Element Model ◽  
Stress Effect ◽  
Maximum Deflection ◽  
Fem Model ◽  
Torsion Beam ◽  
Electric Car ◽  
The Finite Element Model

The torsion beam is one of the most important parts of an electric car. The torsion beam can accept the loading of vehicle structures statically and dynamically. The movement of the vehicle, such as turning, turning with a bumpy road contour, affects the stress limit that the torsion beam can support. This study aims to simulate the effects of shifts such as deflection and stress on the use of a torsion beam suspension. The method used is a loading simulation using the Finite Element Model (FEM) model. The results showed that the maximum deflection effect occurred in the 2000N loading of 1.5347 mm, while the maximum stress effect occurred in the 2000N loading of 2342.57N.

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