Simulation Research of a Type of Pressure Vessel under Complex Loading Part 1 Component Load of the Numerical Analysis

2013 ◽  
Vol 756-759 ◽  
pp. 4656-4661
Author(s):  
Yu Fu Zhang ◽  
Hui Xia Guo ◽  
Jun Chen Li ◽  
Gui Rong Yang ◽  
Ying Ma ◽  
...  
Keyword(s):  
Finite Element ◽  
Pressure Vessel ◽  
Geometric Modeling ◽  
Mechanical Response ◽  
Complex Loading ◽  
Strain Response ◽  
The Finite Element Method ◽  
Key Factors ◽  
Dead Weight ◽  
Simulation Research

Macroscopic mechanical response is one of the key factors in designing pressure vessel. A geometric modeling of pressure vessel was established and the mesh of this modeling then generated by using the finite element simulating methods in software ABAQUS. Loading and boundary conditions of dead weight, hydraulic and uniform internal pressure which often suffered pressure vessel were set and calculated by the finite element method. Stress/strain response of pressure vessel in all kinds of alone loading ways were obtained. The results of finite element simulating were in accordance with those of theoretical calculation which provided useful data for research on mechanical response of pressure vessel under complex loading conditions.

Simulation Research of a Type of Pressure Vessel under Complex Loading Part 2 Complex Load of the Numerical Analysis

2013 ◽  
Vol 756-759 ◽  
pp. 4662-4667
Author(s):  
Jun Chen Li ◽  
Jie Sheng ◽  
Zhang Yu Fu
Keyword(s):  
Pressure Vessel ◽  
Large Scale ◽  
Mechanical Response ◽  
Simulation Analysis ◽  
Complex Loading ◽  
Operating Conditions ◽  
Small Scale ◽  
Simulation Research ◽  
Complex Load ◽  
Calculation Results

Loading of pressure vessel was usually complicated in practical service operating conditions. Simulation model of pressure vessel was built by method of finite element simulation analysis, and structured mesh generation was realized. Numerical calculation was come true, stress/strain distribution of pressure vessel was obtained in applying of the multi-load. On this basis, this condition compared with alone applied many loadings. The calculation results indicate the validity of this model, and results are evaluated according to relevant standards, which provide a way to study mechanical response in the actual working conditions. In addition, sub-model is analyzed for key part of pressure vessel, and transition is come true from large scale simulation to small scale simulation.

Simulation research on the protection performance of fall protection net at the end of truck escape ramp

2021 ◽  
Vol 104 (3) ◽  
pp. 003685042110396
Author(s):  
Pinpin Qin ◽  
Xiaolei Hou ◽  
Shaokun Zhang ◽  
Shunfeng Zhang ◽  
Junming Huang
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Primary Objective ◽  
The Finite Element Method ◽  
Simulation Research ◽  
Verification Method ◽  
Supporting Structure ◽  
Fall Protection ◽  
Mesh Length ◽  
Element Method

Introduction: Although the fall protection net installed at the end of the truck escape ramp has a protective effect on trucks and drivers, but lacks sufficient theoretical basis and verification method. Objectives: The primary objective of this paper was to design a fall protection net that meets the regulations and research its protection performance. Methods: The finite-element method was used to design the overall size, material, mesh length, mesh type, shape, and supporting structure of the fall protection net installed at the end of truck escape ramp, then dummy and truck models were used to impact the fall protection net to verify the rationality of the design. After the design completed, the truck model was used to impact the fall protection net twice to research the cumulative protection performance. Results: A fall protection net with a width of 6000 mm, a span of 6000 mm, a depth of 5196 mm, a mesh length of 150 mm, a mesh type of diamond mesh, a shape of 60-degree V-shaped, a supporting structure of steel pipe supporting has a better effect on energy absorption and protection. Within the two consecutive impacts, the residual plastic deformation and stress of the fall protection net generated in the first impact severely affect the protection performance in the second impact. Conclusion: It is feasible to use the finite-element method to design and research the fall prevention net installed at the end of the truck escape ramp, and the fall protection net can indeed protect the trucks and drivers, and it should be inspected and maintained after impact to ensure the protective performance in subsequent use.

Stresses in Thick Pressure Vessel Heads

1990 ◽  
Vol 112 (1) ◽  
pp. 108-114
Author(s):  
A. V. Singh ◽  
V. Kumar
Keyword(s):  
Experimental Data ◽  
Finite Element Method ◽  
Finite Element ◽  
Pressure Vessel ◽  
The Finite Element Method ◽  
Solid Of Revolution ◽  
Wide Range ◽  
Radial Thrust ◽  
Thrust Load ◽  
Spherical Pressure

The finite element method is used to study stresses in two types of spherical pressure vessel heads having very wide range of applications in industries. The first problem involves a nozzle to sphere intersection reinforced by a pad and subjected to radial thrust load. The second problem deals with a pressurized thick hemispherical drumhead with a circular manhole. These structures are modeled using eight-node axisymmetric solid of revolution finite elements. Numerical values of circumferential and meridional stresses from the present analysis show excellent agreement with experimental data from the literature.

scholarly journals Implementing a micromechanical model into a finite element code to simulate the mechanical and microstructural response of arteries

2020 ◽  
Vol 19 (6) ◽  
pp. 2553-2566
Author(s):  
Daniele Bianchi ◽  
Claire Morin ◽  
Pierre Badel
Keyword(s):  
Finite Element ◽  
Mechanical Response ◽  
Micromechanical Model ◽  
Mechanical Tests ◽  
Material Behavior ◽  
The Finite Element Method ◽  
Experimental Findings ◽  
Constitutive Formulation ◽  
Constitutive Parameters ◽  
Computational Strategy

Abstract A computational strategy based on the finite element method for simulating the mechanical response of arterial tissues is herein proposed. The adopted constitutive formulation accounts for rotations of the adventitial collagen fibers and introduces parameters which are directly measurable or well established. Moreover, the refined constitutive model is readily utilized in finite element analyses, enabling the simulation of mechanical tests to reveal the influence of microstructural and histological features on macroscopic material behavior. Employing constitutive parameters supported by histological examinations, the results herein validate the model’s ability to predict the micro- and macroscopic mechanical behavior, closely matching previously observed experimental findings. Finally, the capabilities of the adopted constitutive description are shown investigating the influence of some collagen disorders on the macroscopic mechanical response of the arterial tissues.

scholarly journals Optimization study of shape of translational shell of square plan

2019 ◽  
Vol 15 (5) ◽  
pp. 367-373 ◽  
Author(s):  
Evgeniya M. Tupikova
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Reinforced Concrete ◽  
Structural Design ◽  
The Finite Element Method ◽  
Dead Weight ◽  
Distributed Load ◽  
Optimization Study ◽  
Different Types ◽  
Comparison Of The Results

The aim of the work. The static analysis and comparison of the results for translational shells under equally distributed load of dead weight are provided. The shells of the similar general dimensions in plan and rise of four different types: translation of catenary along catenary, circle along circle, ellipse along ellipse and sinusoid along sinusoid are investigated. Methods. The finite element method was applied for the analysis. The research was conducted for the shells of material of reinforced concrete characteristics. Results. The comparison has shown that shells of catenary and circle translation surface demonstrate the most advantageous behavior under loading; the worst results for reinforced concrete were got for ellipse along ellipse translation shell. The peculiarities of each type behavior were revealed, that is of interest for their prospective reduction to practice of structural design.

scholarly journals Finite Element Modeling of Stress Behavior of FGM Nanoplates

2021 ◽  
Vol 2021 ◽  
pp. 1-17
Author(s):  
Nguyen Thi Giang
Keyword(s):  
Finite Element ◽  
Mechanical Response ◽  
Shear Deformation Theory ◽  
Numerical Results ◽  
Engineering Practice ◽  
The Finite Element Method ◽  
Maximum Value ◽  
Stress Components ◽  
Distribution Of Stress ◽  
Finite Element Formulations

The mechanical response investigation of nanoplates especially the stress distribution plays a very important role in engineering practice, which is a condition to help test the durability as well as design and use the nanoplate structures most effectively. This pioneering paper uses the finite element method to simulate the stress field of FGM nanoplates based on the first-order shear deformation theory of Mindlin. The finite element formulations are derived by taking into account the effect of the nonlocal coefficient to analyze the mechanical response of nanometer-scale plates. This work presents the distribution of stress components in the xy-plane of plates with different boundary conditions. The numerical results also show clearly that the nonlocal coefficient has a significant influence on the deflection and stress of FGM nanoplates. These numerical results are very new and stunning which clearly show the position of the stress reaching the maximum value. This work is also the basis for scientists in testing the durability of FGM nanoplates.

The Dynamic Analysis for Special Friction Welder Upsetting System Based on the Finite Element Method

2013 ◽  
Vol 433-435 ◽  
pp. 12-16
Author(s):  
Zhi Yuan Rui ◽  
Tao Chen ◽  
Rui Cheng Feng ◽  
Bao Zeng Wang ◽  
Yong Li
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Dynamic Characteristics ◽  
Lagrange Equation ◽  
Element Model ◽  
The Finite Element Method ◽  
Key Factors ◽  
Factors Affecting ◽  
Harmonic Response ◽  
Ansys Workbench

Electrolytic aluminium pre-baked anode conductive device for the special friction Welder upsetting system is the research object. Establish dynamic equation of the upsetting system by its Lagrange equation; analyze the key factors affecting the systems dynamic characteristics; build the systems finite element model to be real by ANSYS Workbench; Set key parameters for the two sets of plans and do analysis for the modal and harmonic response successively. The two plans compared results reveals that the guide spacing and the damping among all the parts can affect the systems dynamic characteristics, which will provide a basis for further improvement and optimization of special friction welding machine bed.

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