scholarly journals Evaluation of compressive properties of SLM-fabricated multi-layer lattice structures by experimental test and μ-CT-based finite element analysis

2019 ◽  
Vol 169 ◽  
pp. 107685 ◽  
Author(s):  
Hongshuai Lei ◽  
Chuanlei Li ◽  
Jinxin Meng ◽  
Hao Zhou ◽  
Yabo Liu ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Experimental Test ◽  
Lattice Structures ◽  
Compressive Properties ◽  
Element Analysis

scholarly journals Analysis for Wrinkling Behavior of Girth-Welded Line Pipe

1996 ◽  
Author(s):  
Luiz T. Souza ◽  
David W. Murray
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Finite Element Model ◽  
Internal Pressure ◽  
Experimental Test ◽  
Element Model ◽  
Element Analysis ◽  
Line Pipe ◽  
New Era ◽  
Analytical Tools

The paper presents results for finite element analysis of full-sized girth-welded specimens of line pipe and compares these results with the behavior exhibited by test specimens subjected to constant axial force, internal pressure and monotonically increasing curvatures. Recommendations for the ‘best’ type of analytical finite element model are given. Comparisons between the behavior predicted analytically and the observed behavior of the experimental test specimens are made. The mechanism of wrinkling is explained and the evolution of the deformed configurations for different wrinkling modes is examined. It is concluded that the analytical tools now available are sufficiently reliable to predict the behavior of pipe in a manner that was not previously possible and that this should create a new era for the design and assessment of pipelines if the technology is properly exploited by industry.

scholarly journals Finite element analysis and experimental study of plastic lattice structures manufactured by selective laser sintering

2016 ◽  
Vol 231 (1-2) ◽  
pp. 171-178 ◽  
Author(s):  
Jie Niu ◽  
Hui Leng Choo ◽  
Wei Sun
Keyword(s):  
Mechanical Properties ◽  
Finite Element Analysis ◽  
Experimental Study ◽  
Finite Element ◽  
Selective Laser Sintering ◽  
Laser Sintering ◽  
Periodic Lattice ◽  
Triangular Prism ◽  
Lattice Structures ◽  
Element Analysis

The availability of additive manufacturing technologies in particular the selective laser sintering process has enabled the fabrication of high strength, lightweight and complex cellular lattice structures. In this study, the effective mechanical properties of selective laser sintering produced periodic lattice structures were investigated. Three different types of lattice structures were designed by repeating three types of open-form unit cells consisting of triangular prism, square prism and hexagonal prism. A novel approach of creating the complex and conformable lattice structures using traditional modelling software such as Creo® proposed by the authors was used. Based on the predesigned lattice structures, finite element analysis was carried out to evaluate the mechanical properties of these structures. For the experimental study, nylon samples were printed using a plastic selective laser sintering system and tested using a universal testing machine. Finite element analysis results show that lattice structures with triangular prism perform better than the other two prisms in terms of Young’s modulus to relative density ratio. Tensile tests results show good conformance with the results obtained from finite element analysis.

Analysis for Wrinkling Behavior of Girth-Welded Line Pipe

1999 ◽  
Vol 121 (1) ◽  
pp. 53-61
Author(s):  
L. T. Souza ◽  
D. W. Murray
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Finite Element Model ◽  
Internal Pressure ◽  
Experimental Test ◽  
Element Model ◽  
Element Analysis ◽  
Line Pipe ◽  
New Era ◽  
Analytical Tools

The paper presents results for finite-element analysis of full-sized girth-welded specimens of line pipe and compares these results with the behavior exhibited by test specimens subjected to constant axial force, internal pressure, and monotonically increasing curvatures. Recommendations for the “best” type of analytical finite element model are given. Comparisons between the behavior predicted analytically and the observed behavior of the experimental test specimens are made. The mechanism of wrinkling is explained and the evolution of the deformed configurations for different wrinkling modes is examined. It is concluded that the analytical tools now available are sufficiently reliable to predict the behavior of pipe in a manner that was not previously possible and that this should create a new era for the design and assessment of pipelines if the technology is properly exploited by industry.

The Research of the Dynamic Characteristics of Horizontal Jig Boring Machine

2013 ◽  
Vol 712-715 ◽  
pp. 1391-1394
Author(s):  
Zhi Li ◽  
X. S. Zhao ◽  
D. W. Zhang
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Machine Tool ◽  
Dynamic Characteristics ◽  
Experimental Test ◽  
Structure Modification ◽  
Analysis Software ◽  
Machine Model ◽  
Element Analysis ◽  
Set Up

Modal analysis is one way of studying the dynamic characteristics of the mechanical. In order to study the dynamic characteristics of machine tool,numerical machine model is set up with finite element analysis software,of which validity is verified by experimental modal analysis.The experimental test also provide the boundary conditions, so as to further structure modification and dynamic characteristic design

scholarly journals Compressive Behaviour of Lattice Structures Manufactured by Polyjet Technologies

Polymers ◽  
2020 ◽  
Vol 12 (12) ◽  
pp. 2767
Author(s):  
Camil Lancea ◽  
Ian Campbell ◽  
Lucia-Antoneta Chicos ◽  
Sebastian-Marian Zaharia
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Compressive Strength ◽  
Additive Manufacturing ◽  
Critical Section ◽  
Test Machine ◽  
Lattice Structures ◽  
Element Analysis ◽  
Different Types ◽  
Fea Analysis

Additive manufacturing (AM) techniques can help to reduce the time and cost for manufacturing complex shaped parts. The main goal of this research was to determine the best strength structure of six different types of lattice cells, manufactured using the Poly Jet AM technology. In order to perform the tests, six samples with the same structure were created for each lattice type. For testing the samples in compression, an electromechanical test machine was used. finite element analysis (FEA) analysis was used in order to determine the area where the greatest stresses occured and to estimate the maximal compressive strength. The strongest structure was determined by obtaining the maximal compressive strength. This was calculated in two ways: as a ratio between the maximal supported force and the mass of the sample (N/g) and as a ratio between the maximal supported force and the critical section of the sample (MPa).

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