scholarly journals Strength of the Three Layer Beam with Two Binding Layers

2016 ◽  
Vol 62 (3) ◽  
pp. 189-206 ◽  
Author(s):  
M. J. Smyczyński ◽  
E. Magnucka-Blandzi
Keyword(s):  
Metal Foam ◽  
Sandwich Beam ◽  
Analytical Description ◽  
Transverse Load ◽  
Strength Analysis ◽  
Problem Analysis ◽  
Element Analysis ◽  
Stationary Potential ◽  
Three Point Bending ◽  
The Finite Element Analysis

Abstract The paper is devoted to the strength analysis of a simply supported three layer beam. The sandwich beam consists of: two metal facings, the metal foam core and two binding layers between the faces and the core. In consequence, the beam is a five layer beam. The main goal of the study is to elaborate a mathematical model of this beam, analytical description and a solution of the three-point bending problem. The beam is subjected to a transverse load. The nonlinear hypothesis of the deformation of the cross section of the beam is formulated. Based on the principle of the stationary potential energy the system of four equations of equilibrium is derived. Then deflections and stresses are determined. The influence of the binding layers is considered. The results of the solutions of the bending problem analysis are shown in the tables and figures. The analytical model is verified numerically using the finite element analysis, as well as experimentally.

Experimental and Finite Element Analysis Approach for Fatigue of Unidirectional Fibrous Composites

2011 ◽  
Vol 87 ◽  
pp. 106-112 ◽  
Author(s):  
Amiri Asfarjani Alireza ◽  
Adibnazari Sayid ◽  
Reza Kashyzadeh Kazem
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Fatigue Testing ◽  
Micromechanical Model ◽  
Weight Ratio ◽  
Life Time ◽  
Fibrous Composites ◽  
Element Analysis ◽  
Three Point Bending ◽  
The Finite Element Analysis

Fibrous composites are finding more and more applications in aerospace, automotive, and naval industries. They have high stiffness and strength to weight ratio and good rating in regards to life time fatigue. Investigating mechanical behavior under dynamic loads to replace this material is very important. In the present article, investigate Fatigue of Unidirectional Fibrous Composites by using finite element analysis. So, to achieve this purpose Firstly, modeling fiber and matrix in separate case and simulated semi actual conditions, attained S-N curve of fiber and matrix and after that by using micromechanical model of combination fiber and matrix can approach S-N curve of Unidirectional Fibrous Composites. Finally, Comparisons of the finite element analysis of Ansys and the experimental predictions indicate based on three point bending fatigue testing that the results are satisfactorily in good agreement with each other which approves the power law assumption in the model.

The Finite Element Analysis and Optimization of Subway Steel Structure Work Platform Based on Workbench and Pro/E in a Subway

2012 ◽  
Vol 538-541 ◽  
pp. 2953-2956
Author(s):  
Ya Li ◽  
Guang Sheng Ren
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Structural Characteristics ◽  
Steel Structure ◽  
Strength Analysis ◽  
Element Analysis ◽  
Maximum Deformation ◽  
Software Model ◽  
The Finite Element Analysis ◽  
Calculation Results

The static and stability analysis of steel structure were taken according to steel structure work platform’s requirements and structural characteristics in a subway parking space by using the software model which is established by Pro/E software and implanted into the finite element analysis software ANSYS Workbench. The maximum deformation and stress in design load of the steel structure were calculated and the linear stress strength analysis of the key parts was carried out, also both the analysis and testing of the supporting pillar’s stability were performed. The results show that the structure model established by Pro/E and the calculation method are reasonable. Moreover, the calculation results are of high accuracy. The profile size is properly chosen and the structure bearing capacity and deformation meet the design requirements.

scholarly journals Analysis of Intensity and Vibration of 190T Electric Wheel Dump Truck Frame

2011 ◽  
Vol 2-3 ◽  
pp. 1008-1013
Author(s):  
Xiao Guang Yu ◽  
L. Yang
Keyword(s):  
Frame Structure ◽  
Weak Links ◽  
Dump Truck ◽  
Strength Analysis ◽  
Analysis Method ◽  
Element Analysis ◽  
Stiffness Analysis ◽  
The Finite Element Analysis ◽  
Strength And Stiffness ◽  
Analysis Of Performance

Through the cracking failure analysis of dump truck frame with large electric wheel, the static and dynamic frame analysis of performance evaluation are conducted by the finite element analysis method. From the strength and stiffness analysis frame structure in the weak links, it is easy to find out crack the parts and the reasons with frame, and through the modal analysis and random vibration and fatigue strength analysis the danger frequency of the frame induced by road encourage is obtained, which can prevent the occurrence of frame cracks and provide a foundation for further optimization of the frame.

scholarly journals Stress Distribution on Sandwich Structure with Triangular Grid Cores Suffered from Bending Load

2015 ◽  
Vol 2015 ◽  
pp. 1-8 ◽  
Author(s):  
Cui Xu ◽  
Huang Yanjiao ◽  
Wang Shou ◽  
Lu Chun ◽  
Fang Luping
Keyword(s):  
Carbon Fiber ◽  
Sandwich Structure ◽  
Honeycomb Structure ◽  
Triangular Grid ◽  
Element Analysis ◽  
Three Point Bending ◽  
Bending Load ◽  
The Finite Element Analysis ◽  
Carbon Fiber Epoxy ◽  
Honeycomb Sandwich Structure

Triangular grid reinforced by carbon fiber/epoxy (CF/EP) was designed and manufactured. The sandwich structure was prepared by gluing the core and composite skins. The mechanical properties of the sandwich structure were investigated by the finite element analysis (FEA) and three-point bending methods. The calculated bending stiffness and core shear stress were compared to the characteristics of a honeycomb sandwich structure. The results indicated that the triangular core ultimately failed under a bending load of 11000 N; the principal stress concentration was located at the loading region; and the cracks occurred on the interface top skin and triangular core. In addition, the ultimate stress bearing of the sandwich structure was 8828 N. The experimental results showed that the carbon fiber reinforced triangular grid was much stiffer and stronger than the honeycomb structure.

The Finite Element Analysis of a Shipyard's Lifting Eye with Load

2013 ◽  
Vol 631-632 ◽  
pp. 1006-1010
Author(s):  
Shao Fen Lin ◽  
Zhao Yi Zhu
Keyword(s):  
Finite Element ◽  
Working Conditions ◽  
High Reliability ◽  
Strength Analysis ◽  
Bearing Surface ◽  
Calculation Methods ◽  
Element Analysis ◽  
The Finite Element Analysis ◽  
Simplified Method ◽  
Nonlinear Contact

As lifting points for ship block turning over and hoisting operation, the strength of the lifting eye directly affects the safety of the operation, therefore it is required for extreme high reliability. The conventional strength analysis can not exactly describe the actual stress and working conditions of the lifting eye, nonlinear contact and simplified finite element arithmetic are used for analyzing and checking the lifting eye's strength in this paper; and the stress force distribution formula, which can well reflect the true status of the pressure-bearing surface, is researched. Through the comparison of the various calculation methods, it can be found that the reasonable simplified method can approach the nonlinear contact finite element arithmetic with high precision and is characterized with higher calculation speed and more concise and practicable.

scholarly journals Finite Element Fatigue Analysis of Unsupported Crane

2021 ◽  
Vol 28 (1) ◽  
pp. 127-135
Author(s):  
Ryszard Buczkowski ◽  
Bartłomiej Żyliński
Keyword(s):  
Finite Element ◽  
Numerical Analysis ◽  
Fatigue Analysis ◽  
Strength Analysis ◽  
Marine Structures ◽  
Element Analysis ◽  
Static Loads ◽  
The Finite Element Analysis ◽  
Sufficient Degree ◽  
Number Of Cycles

Abstract The presented strength and fatigue calculations refer to an unsupported deck crane and its three distinct parts: housing, jib and column. Static loads applied to the structure were due to the crane’s own weight and a maximum working load, corresponding to a maximum lifting capacity at a maximum outreach of the crane. The numerical analysis was aimed at determining the thickness of the skin plating of the column and the number, shape and distribution of stiffeners in the column, housing and jib, ensuring that the crane yields correct strength and fatigue parameters. During the process of designing marine structures, the standard numerical analysis is, in many cases, limited to calculations in the basic strength range. Even when using numerical methods of analysis, complex strength and fatigue calculations are often not performed. The modern numerical analysis chain for marine structures should concentrate not only on strength analysis, but should take a further step, which encompasses fatigue analysis. The article presents a new outlook on design methods, which should be the entry point to the design of marine structures. Based on the acquired number of cycles of fatigue life, it is possible to estimate, with a sufficient degree of accuracy, the practical service life of a structure. To solve the problem, the authors used the finite element analysis software ABAQUS supported by the fe-safe system.

Research on Analysis Method of Fatigue Strength for New Type Crushing Ripper Based on the Composite Load Spectrum

2014 ◽  
Vol 487 ◽  
pp. 378-384
Author(s):  
Feng Yi Lu ◽  
Xin Xin Liu ◽  
Ge Ning Xu
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Fatigue Strength ◽  
Strength Analysis ◽  
Analysis Method ◽  
Load Spectrum ◽  
Element Analysis ◽  
Structural Fatigue ◽  
The Finite Element Analysis ◽  
New Type

In view of the problem that new type crushing ripper installation of tamping equipment in circulation under the action of different load working multiple cases may occur structural fatigue damage, analysis of its force characteristic, establishment ripper rack compression bending component model, according to the working condition of the most unfavorable load combinations, using the allowable stress method to calculate structural fatigue strength; the combined effect of road load spectrum and vibrating load is also taken into consideration, then statics analysis and fatigue analysis of new type crushing ripper are calculated with the finite element analysis software Ansys Workbench. The results show that theoretical calculations are in accordance with the finite element analysis results, it evidences that the fatigue strength analysis method of crushing ripper is feasible and correct. It provides a reference for the anti-fatigue optimization design of new type crushing ripper, to guarantee its meet the operational requirements under of bad conditions.

scholarly journals Burst Strength Analysis of Casing With Geometrical Imperfections

2006 ◽  
Vol 129 (4) ◽  
pp. 763-770 ◽  
Author(s):  
Xiaoguang Huang ◽  
Yanyun Chen ◽  
Kai Lin ◽  
Musa Mihsein ◽  
Kevin Kibble ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Oil And Gas ◽  
Oil And Gas Industry ◽  
Strength Analysis ◽  
Element Analysis ◽  
Burst Strength ◽  
The Finite Element Analysis ◽  
Geometrical Imperfections ◽  
Major Factors

Accurately predicting the burst strength is very important in the casing design for the oil and gas industry. In this paper, finite element analysis is performed for an infinitely long thick walled casing with geometrical imperfections subjected to internal pressure. A comparison with a series of full-scale experiments was conducted to verify the accuracy and reliability of the finite element analysis. Furthermore, three predictive equations were evaluated using the test data, and the Klever equation was concluded to give the most accurate prediction of burst strength. The finite element analysis was then extended to study the effects of major factors on the casing burst strength. Results showed that the initial eccentricity and material hardening parameter had important effects on the burst strength, while the effect of the initial ovality was small.

Research on Fatigue Behavior of Beam with Corrugated Steel Webs

2013 ◽  
Vol 690-693 ◽  
pp. 164-167
Author(s):  
Xiao Long Hu ◽  
Lian Fei Tan ◽  
Qing Xuan Wang
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Fatigue Testing ◽  
Fatigue Behavior ◽  
Testing Machine ◽  
Element Analysis ◽  
Three Point Bending ◽  
Corrugated Webs ◽  
The Finite Element Analysis ◽  
Corrugated Steel Web

This paper present that experimental research on the fatigue behavior of beam with Q345c steel corrugated webs. There are four test specimens with different structural feature will be tested in three-point bending to load by Shinmadzu 4890 fatigue testing machine. Moreover, the finite-element analysis will be used to simulate the fatigue behavior of common beam with corrugated steel web. Weld will be our focus on importance object.

Assessment of Sandwich Beam in Three-Point Bending for Measuring Adhesive Shear Modulus

2001 ◽  
Vol 123 (3) ◽  
pp. 322-328 ◽  
Author(s):  
Jianmei He ◽  
Martin Y. M. Chiang ◽  
Donald L. Hunston
Keyword(s):  
Shear Modulus ◽  
Sandwich Beam ◽  
Adhesive Layer ◽  
Test Method ◽  
Bending Test ◽  
Beam Specimen ◽  
Element Analysis ◽  
Three Point Bending ◽  
The Impact ◽  
Made In

A finite element analysis (FEA) was conducted to examine the feasibility of determining the shear modulus of an adhesive in a bonded geometry using a three-point bending test on a sandwich beam specimen. The FEA results were compared with the predictions from two analytical solutions for the geometry used to determine the impact of the assumptions that were made in these analyses. The analytical results showed significantly different to the values obtained from other experiments on bulk samples of the adhesive in the glassy region. Although there were some agreements in rubbery region, the negligible sensitivity of the beam stiffness to the presence of adhesive layer makes the agreements very questionable. To examine the possible explanations for these differences in glassy adhesives, sensitivity analysis was conducted to explore the effects of experimental variables. Some possible reasons for the differences are discussed, but none of these reasons taken alone satisfactorily account for the discrepancies. Until an explanation is found, the three-point bending test using a sandwich beam specimen to determine the adhesive shear modulus might not be a desirable test method, at least for the range of geometry examined in this study.

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