Finite Element Analysis of Mechanical Properties of 3D Four-directional Rectangular Braided Composites—Part 2: Validation of the 3D Finite Element Model

2010 ◽  
Vol 17 (4) ◽  
pp. 389-404 ◽  
Author(s):  
Dian-sen Li ◽  
Dai-ning Fang ◽  
Zi-xing Lu ◽  
Zhen-yu Yang ◽  
Nan Jiang
Keyword(s):  
Mechanical Properties ◽  
Finite Element Analysis ◽  
Finite Element ◽  
Finite Element Model ◽  
Element Model ◽  
Braided Composites ◽  
Element Analysis ◽  
3D Finite Element ◽  
3D Finite Element Model

scholarly journals Numerical investigation of the mechanical properties of the additive manufactured bone scaffolds fabricated by FDM: the effect of layer penetration and post-heating

2017 ◽  
Author(s):  
Saman Naghieh ◽  
Mohammad Reza Karamooz-Ravari ◽  
Mohsen Badrossamay ◽  
Ehsan Foroozmehr
Keyword(s):  
Mechanical Properties ◽  
Finite Element Analysis ◽  
Finite Element ◽  
Elastic Modulus ◽  
Numerical Methods ◽  
Finite Element Model ◽  
Compression Test ◽  
Element Model ◽  
Element Analysis ◽  
Bone Scaffolds

In recent years, thanks to additive manufacturing technology, researchers have gone towards the optimization of bone scaffolds for the bone reconstruction. Bone scaffolds should have appropriate biological as well as mechanical properties in order to play a decisive role in bone healing. Since the fabrication of scaffolds is time consuming and expensive, numerical methods are often utilized to simulate their mechanical properties in order to find a nearly optimum one. Finite element analysis is one of the most common numerical methods that is used in this regard. In this paper, a parametric finite element model is developed to assess the effects of layers penetration׳s effect on inter-layer adhesion, which is reflected on the mechanical properties of bone scaffolds. To be able to validate this model, some compression test specimens as well as bone scaffolds are fabricated with biocompatible and biodegradable poly lactic acid using fused deposition modeling. All these specimens are tested in compression and their elastic modulus is obtained. Using the material parameters of the compression test specimens, the finite element analysis of the bone scaffold is performed. The obtained elastic modulus is compared with experiment indicating a good agreement. Accordingly, the proposed finite element model is able to predict the mechanical behavior of fabricated bone scaffolds accurately. In addition, the effect of post-heating of bone scaffolds on their elastic modulus is investigated. The results demonstrate that the numerically predicted elastic modulus of scaffold is closer to experimental outcomes in comparison with as-built samples.

A Full-Scale 3D Finite Element Analysis for No-Underfill Flip Chip Package

2002 ◽  
Author(s):  
S. M. Hsu ◽  
J. C. Lin ◽  
K. N. Chiang
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Flip Chip ◽  
Computation Time ◽  
Element Model ◽  
Organic Substrate ◽  
Full Scale ◽  
Element Analysis ◽  
3D Finite Element ◽  
3D Finite Element Model

This research establishes a micro-macro 3D finite element model for no underfill flip chip BGA package. The no underfill package uses a ceramic-like (CTE close to silicon) material mounted on the backside of the flip chip substrate to constrain the thermal expansion of the organic substrate and enhance the reliability of the solder joint. This work attempts to design a constrained structure to enhance the reliability of the no underfill flip chip package. For the special design of constrained structure, a full-scale 3D finite element model is needed to investigate some mechanical behaviors that cannot be revealed by the 2D finite element model. However, to establish a full-scale 3D finite element model, the large computation time is an issue. The equivalent beam concept is adopted in this research to overcome this drawback of the finite element models. The results indicate that the equivalent beam concept is a feasible methodology for reducing the computation time of the 3D finite element model. Further, the new design structure could improve package reliability, increase manufacturing throughput and thermal performance, and maintain reworkability of the flip chip structure.

scholarly journals Influence of the shape of the micro-finite element model on the mechanical properties calculated from micro-finite element analysis

2017 ◽  
Vol 14 (2) ◽  
pp. 1744-1748
Author(s):  
Xin-Xin Wen ◽  
Hai-Long Yu ◽  
Ya-Bo Yan ◽  
Chun-Lin Zong ◽  
Hai-Jiao Ding ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Finite Element Analysis ◽  
Finite Element ◽  
Finite Element Model ◽  
Element Model ◽  
Element Analysis

scholarly journals 3D finite element model of dynamic material behaviors for multilayer ultrasonic metal welding

2021 ◽  
Vol 62 ◽  
pp. 302-312
Author(s):  
Ninggang Shen ◽  
Avik Samanta ◽  
Wayne W. Cai ◽  
Teresa Rinker ◽  
Blair Carlson ◽  
...  
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Element Model ◽  
3D Finite Element ◽  
Ultrasonic Metal Welding ◽  
3D Finite Element Model ◽  
Material Behaviors ◽  
Metal Welding

Study on the Deformation of the Oil-Immersed Transformer Tank by FEA

2011 ◽  
Vol 422 ◽  
pp. 51-54 ◽  
Author(s):  
Jian Hua Zhang ◽  
Ling Yu Sun ◽  
Xiao Jun Zhang ◽  
Jia Peng Li
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Mechanical Strength ◽  
Element Model ◽  
3D Finite Element ◽  
3D Finite Element Model ◽  
Series Of Experiments ◽  
Oil Tank ◽  
Directive Function

The oil-immersed transformer tank is an outside package component of the transformer body. The sealing quality and mechanical strength of the oil tank are affected by the deformation after loading. In this paper, the 3D finite element model of oil-immersed transformer tank is established. The oil-immersed transformer tank deformation is obtained by FEA under the condition of vacuuming. A series of experiments about the deformation of the oil-immersed transformer tank are carried out. Comparing experiment results with FEA results, FEA results are agrees well with the experiments’. It can save the time consumed on designing the oil tank, and has the directive function for the whole design.

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