FINITE ELEMENT ANALYSIS OF TENSILE LOAD RESISTANCE OF MORTISE-AND-TENON JOINTS CONSIDERING TENON FIT EFFECTS

2018 ◽  
Vol 50 (2) ◽  
pp. 121-131 ◽  
Author(s):  
Wengang Hu ◽  
Huiyuan Guan ◽  
Jilei Zhang
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Tensile Load ◽  
Load Resistance ◽  
Element Analysis ◽  
Mortise And Tenon

Finite Element Analysis of Magnetization Reversal Effect Based on Ferromagnetic Specimens

2014 ◽  
Vol 620 ◽  
pp. 127-132
Author(s):  
Xiao Wen Xi ◽  
Shang Kun Ren ◽  
Li Hua Yuan
Keyword(s):  
Magnetic Field ◽  
Finite Element Analysis ◽  
Finite Element ◽  
Magnetic Flux ◽  
Magnetization Reversal ◽  
Tensile Load ◽  
Magnetic Flux Leakage ◽  
Element Analysis ◽  
The Magnetic Field ◽  
Flux Leakage

Using large finite element analysis (FEA) software ANSYS, the stress-magnetization effect on 20# steel specimens with different shape notches is simulated under the geomagnetic field and tensile load. With the stimulation, the magnetic flux leakage fields at certain positions of the surface specimen were measured. Through analysis the relationship between the magnetic flux leakage fields of certain points with tensile stress, the results showed that the magnetic field value at certain positions of specimen surface first decreases and then increases along with the increase of stress, which is called magnetization reversal phenomenon; Different gaps and different positions of the specimen show different magnetization reversal rules; By measuring the maximal variation of the magnetic field value △Hmax at certain positions of the surface specimen and by analyzing its change law, we can roughly estimate specimen stress size and distribution regularity of stress. Moreover, this article also discusses the effect of lifts-off of the probe on the law of stress magnetization.

Design and Analysis of Epoxy Based Cable Terminations for Marine Cables

2019 ◽  
Author(s):  
Raghu V. Prakash ◽  
Padmanabhan G. Vibhu
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Tensile Load ◽  
Epoxy Compound ◽  
Outer Shell ◽  
Stress Profile ◽  
Element Analysis ◽  
Synthetic Fibers ◽  
Load Carrying ◽  
Marine Applications

Abstract Synthetic fibers like Kevlar and Vectran are used as load carrying members in Electro-mechanical cables for marine applications. These cables have high strength, high modulus and very low water absorption rate which make them suitable materials for marine applications. The flexible electromechanical cables carry tensile load and electrical power along with data signals. Terminations are used to connect these cables to another cable or terminal. An efficient termination will ensure a load carrying capacity that is almost equal to the breaking load of the strength member of the cable. The presence of stress concentrators due to large diametrical difference between termination body and the braided fiber diameter as well as degradation in material properties reduces the strength and results in failure. This study focuses on a chemical potting method of termination, where an epoxy compound is poured into a socket containing the Vectran™ synthetic fibers. The basic design of epoxy based termination, which has a cylindrical outer shell which secures the epoxy-fiber matrix, was selected for this study. The outer shell has two cylindrical inner surfaces of different diameters connected by a tapered region. Material property for static and fatigue loading was evaluated. Finite element analysis was carried out to understand the maximum stress profile developed in the termination and to improve the design. Baseline data on mechanical properties obtained from experiments was used as input in FE analysis. Results of the finite element analysis suggest a reasonable correlation with experiments.

scholarly journals Numerical simulation of tensile testing of PE 80 polymer specimens

2018 ◽  
Vol 22 (1 Part B) ◽  
pp. 641-649
Author(s):  
Simon Sedmak ◽  
Zorana Golubovic ◽  
Alin Murariu ◽  
Aleksandar Sedmak
Keyword(s):  
Numerical Simulation ◽  
Finite Element Analysis ◽  
Finite Element ◽  
Temperature Distribution ◽  
Plastic Strain ◽  
Tensile Testing ◽  
Numerical Models ◽  
Tensile Load ◽  
Element Analysis ◽  
Abaqus Software

The aim of this paper is to present the behaviour of specimens made of polyethylene material PE 80, subjected to tensile load until failure. Measurements of the temperature distribution have been done using the infrared thermography during specimens loading. Finite element analysis was performed in ABAQUS software, where numerical models were made based on the thermograms and force-dis-placement diagrams obtained from these experiments. Afterwards, results from the simulation were compared with the experimental results and it was deter-mined in which way the model can be optimized so that these results comply at an acceptable level. Numerical model has shown that the highest values of plastic strain were located near the notch. Value of this plastic strain is several times greater than the values in the remaining parts of the specimen. The numerical analysis also determined that defining the load in displacement form was a much better solution than defining it using the force, since the results have shown much better compliance, and the calculation time was much shorter in this case.

Optimum Study of Power Efficiency of a THUNDER Harvester

2018 ◽  
Author(s):  
Md Nahid Hasan ◽  
Shang Wang ◽  
Ali Arab ◽  
Fengxia Wang
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Resonance Frequency ◽  
Power Output ◽  
Power Efficiency ◽  
Load Resistance ◽  
Field Analysis ◽  
Radius Of Curvature ◽  
Element Analysis ◽  
Piezoelectric Energy

A piezoelectric-coupled finite element model for a THUNDER harvester (THin layer UNimorph DrivER) is developed and studied in this work. THUNDER is a curved piezoelectric energy generator developed by NASA Langley Research Center, which has better vibration absorption and higher energy recovery efficiency at low-frequency vibration compared to a flat PZT harvester. To apprehend the piezoelectric effect of the THUNDER harvester, finite element method was used to perform the piezoelectric coupled field analysis. Piezoelectric THUNDER harvester was studied under cantilever boundary condition. In the model, the excitation forces are distribution force allied on the top of the dome line. An electric circuit element was used to create load resistance across the electrodes to obtain the generated voltage and power. The effect of the geometric parameter was investigated via the varying radius of curvature, which affects the resonance frequency, voltage, and power output of the THUNDER. Good agreement between finite element analysis and experimental results were also observed. In finite element analysis: Modal analysis was carried out to find the resonance frequency at which maximum performance characteristics of the THUNDER can be achieved. Then, the harmonic analysis was performed to distinguish the voltage and power output variation as the load resistance changes. The effects of the varying radius of curvature on the power efficiency of the THUNDER were summarized.

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