scholarly journals Numerical Investigation of Tool Parameters Influence on the Interlock Forming During Flat Clinching Process

2021 ◽  
Author(s):  
Zhiyong Wang ◽  
Shanling Han ◽  
Zhiyong Li ◽  
Yong Li
Keyword(s):  
Finite Element ◽  
Numerical Model ◽  
Linear Relationship ◽  
Numerical Investigation ◽  
Vital Role ◽  
Blank Holder ◽  
Finite Element Software ◽  
Punch Radius ◽  
Deform 2D ◽  
The Relationship

Abstract Tool parameters play a vital role in the mechanical interlock formation during the flat clinching process, to understand the influence of tool parameters on the interlock formation, the finite element software DEFORM-2D was used to build the numerical model of the flat clinching process, and the numerical model was verified by the experiment. The influences of the punch radius, punch fillet radius, and blank holder radius on the interlock formation of the clinched joint were investigated using the numerical model. Then, the relationship between the punch radius and blank holder radius was studied. The results showed that the interlock gradually increases with the increase of the blank holder radius, after that, the interlock begins to decrease. To maximize the interlock, the punch radius and the blank holder radius should be increased simultaneously. It can be concluded that the blank holder radius and the punch radius should keep in a linear relationship when designing the geometric dimensions of the flat clinch tools, which can promote the application of flat clinching process in car body manufacturing.

Numerical Analysis of the Stress of Different Cave Development Pathes on Lock Head Floor

2011 ◽  
Vol 90-93 ◽  
pp. 2592-2596
Author(s):  
Li Ping Zhao ◽  
Chu Bo Xue ◽  
Zhou Hong Cao ◽  
Qiang Ji
Keyword(s):  
Finite Element ◽  
Numerical Model ◽  
Guangdong Province ◽  
Three Dimension ◽  
Finite Element Software ◽  
Backfill Soil ◽  
Development Paths ◽  
Lock In ◽  
The Relationship ◽  
Ship Lock

Caves have great influences on the upper structure of shiplocks and this paper established a three-dimension numerical model cave foundation –lock head–backfill soil using finite element software ANSYS on the condition of cave at Jietan ship lock in LianJiang River Guangdong Province. The relationship between the different development paths of the cave and the stress on the floor is analyzed, and the results are of referential value for other ship lock construction in the LianJiang River and other similar projects.

scholarly journals Numerical model of the nanoindentation test based on the digital material representation of the Ti/TiN multilayers

2015 ◽  
Vol 33 (2) ◽  
pp. 348-355 ◽  
Author(s):  
Konrad Perzyński ◽  
Radosław Wiatr ◽  
Łukasz Madej
Keyword(s):  
Finite Element ◽  
Numerical Model ◽  
Cellular Automata ◽  
Pulsed Laser ◽  
Laser Deposition ◽  
Nanoindentation Test ◽  
Cellular Automata Model ◽  
Finite Element Software ◽  
Specific Morphology ◽  
Digital Material

AbstractThe developed numerical model of a local nanoindentation test, based on the digital material representation (DMR) concept, has been presented within the paper. First, an efficient algorithm describing the pulsed laser deposition (PLD) process was proposed to realistically recreate the specific morphology of a nanolayered material in an explicit manner. The nanolayered Ti/TiN composite was selected for the investigation. Details of the developed cellular automata model of the PLD process were presented and discussed. Then, the Ti/TiN DMR was incorporated into the finite element software and numerical model of the nanoindentation test was established. Finally, examples of obtained results presenting capabilities of the proposed approach were highlighted.

scholarly journals Verification of the flexion and shear behavior in masonry panels accordance to ABNT NBR 15961-1 (2011), EN 1996-1-1 (2005) and ACI TMS 530 (2013)

2018 ◽  
Vol 11 (4) ◽  
pp. 673-685
Author(s):  
R. C. MATA ◽  
C. S. RAMOS ◽  
M. L. C. SILVA
Keyword(s):  
Computer Simulation ◽  
Finite Element ◽  
Numerical Model ◽  
Design Criteria ◽  
Two Dimensional ◽  
Finite Element Software ◽  
Modelling Procedure ◽  
Increasing Trend ◽  
American Standard ◽  
Compression Level

Abstract This paper presents a numerical analysis of the mechanical behavior of structural masonry panels submitted to horizontal and vertical stresses. To evaluate the design process of these structures, the results obtained by the computer simulations were compared with the results determined by the design criteria of ABNT NBR 15961-1 (2011), ACI TMS 530 (2013) and EN 1996-1-1 (2005). The finite element software DIANA v.9.3 was used to simulate two-dimensional models with the simplified micro modelling procedure. The results obtained by the normative standards were more conservative than the results of the numerical model, as expected. With the increase of the pre-compression level, the computer simulation has demonstrated the increasing trend of the values of resistant forces, besides the change of the way of rupture of the panels. Among the three standards evaluated, the American Standard was the most conservative.

scholarly journals Finite Element Study on the Shear Capacity of Traditional Joints between Walls Made of AAC Masonry Units

Materials ◽  
2020 ◽  
Vol 13 (18) ◽  
pp. 4035
Author(s):  
Marcin Kozłowski ◽  
Iwona Galman ◽  
Radosław Jasiński
Keyword(s):  
Finite Element ◽  
Tensile Strength ◽  
Elastic Modulus ◽  
Numerical Model ◽  
Fracture Energy ◽  
Shear Capacity ◽  
Nonlinear Behaviour ◽  
Structural Behaviour ◽  
Finite Element Software ◽  
Masonry Units

This paper presents the development of a numerical model aimed at the simulation of nonlinear behaviour of traditional joints between walls made of autoclaved aerated concrete (AAC) masonry units. Nonlinear behaviour and cracking of AAC and mortar were simulated using the concrete damaged plasticity (CDP) model available in the ABAQUS finite element software. The paper also presents and discusses the results of an experimental campaign involving testing six T-shaped, monosymmetric samples with traditional joints between walls loaded in shear. The results were used to validate the numerical model. The validation confirmed that the model is capable of producing accurate results and predicting the structural behaviour with a reasonably good accuracy in elastic and post-elastic stages. Furthermore, a sensitivity study was conducted, in which the variation of elastic modulus, Poisson’s ratio, tensile strength, compression strength and fracture energy of AAC was investigated. Results showed that the variation of elastic modulus, tensile strength and fracture energy is most critical to the structural behaviour of the model, while variation of the remaining parameters has a negligible effect on the results.

scholarly journals Curvature reduces bending strains in the quokka femur

PeerJ ◽  
2017 ◽  
Vol 5 ◽  
pp. e3100 ◽  
Author(s):  
Kyle McCabe ◽  
Keith Henderson ◽  
Jess Pantinople ◽  
Hazel L. Richards ◽  
Nick Milne
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Linear Relationship ◽  
Strain Gradient ◽  
Stance Phase ◽  
Element Model ◽  
Knee Extensors ◽  
Bending Strain ◽  
Biarticular Muscles ◽  
The Relationship

This study explores how curvature in the quokka femur may help to reduce bending strain during locomotion. The quokka is a small wallaby, but the curvature of the femur and the muscles active during stance phase are similar to most quadrupedal mammals. Our hypothesis is that the action of hip extensor and ankle plantarflexor muscles during stance phase place cranial bending strains that act to reduce the caudal curvature of the femur. Knee extensors and biarticular muscles that span the femur longitudinally create caudal bending strains in the caudally curved (concave caudal side) bone. These opposing strains can balance each other and result in less strain on the bone. We test this idea by comparing the performance of a normally curved finite element model of the quokka femur to a digitally straightened version of the same bone. The normally curved model is indeed less strained than the straightened version. To further examine the relationship between curvature and the strains in the femoral models, we also tested an extra-curved and a reverse-curved version with the same loads. There appears to be a linear relationship between the curvature and the strains experienced by the models. These results demonstrate that longitudinal curvature in bones may be a manipulable mechanism whereby bone can induce a strain gradient to oppose strains induced by habitual loading.

Optimization Analysis for Radial Support by Finite Elements Method

2012 ◽  
Vol 466-467 ◽  
pp. 734-738
Author(s):  
Cheng Ming Li ◽  
Yi Fan Wang
Keyword(s):  
Finite Element ◽  
Finite Elements ◽  
Optimal Solution ◽  
Support Point ◽  
Mirror Surface ◽  
Optimization Analysis ◽  
Primary Mirror ◽  
Finite Element Software ◽  
The Relationship ◽  
Surface Figure

Primary mirror’ surface figure is affected by supporting structure obviously. Especially for large-aperture telescope, the surface figure is significant because of primary mirror’ self-weight. For the requirement of the usage, it’s necessary to minimize the surface figure from self-weight by reasonable supporting scheme. The text optimized support point and force of radial support to minimize the surface figure by finite-element software. At the same time, it studied the relationship between support point and counterweight to reduce the weight of support structure. At last, it gave the optimal solution.

Finite Element Analysis of Double Curvature and Large-Area Workpiece in Hot Gas Bulge-Forming of Polycarbonate (PC) Sheet

2009 ◽  
Vol 16-19 ◽  
pp. 500-504
Author(s):  
Zhen Xiu Hou ◽  
Nan Zhang ◽  
En Ren Liu ◽  
Zhi Liu ◽  
An Feng ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Finite Element ◽  
Geometrical Shape ◽  
Longitudinal Stress ◽  
Large Area ◽  
Element Analysis ◽  
Blank Holder ◽  
Finite Element Software ◽  
Hot Gas ◽  
Double Curvature

To explore geometrical shape, stress distribution, strain distribution and wall thickness of product in the process of polycarbonate hot gas bulge forming, numerical simulation of 4mm PC double curvature and large-area workpiece with the chord 1050mm has been conducted by the finite element software DYNAFORM. The results indicate that the deformation of large-area workpiece starts from blank holder to sheet center, and the maximum latitudinal stress and longitudinal stress is located in the center of PC sheet. The maximum reducing rate is approximate to 6.4%. The experimental results fit well with the numerical simulation.

The Calculation of Deformation Force in Closed Muti-Ram Forging

2010 ◽  
Vol 154-155 ◽  
pp. 969-972
Author(s):  
Chun Dong Zhu ◽  
Bo Zhou ◽  
Hui Wang
Keyword(s):  
Finite Element ◽  
Principal Stress ◽  
Rigid Plastic ◽  
Finite Element Software ◽  
Deformation Force ◽  
The Relationship ◽  
Complex Parts

With the example of rod, this paper introduces principal stress method in the analysis and calculation of deformation force in complex parts manufactured by closed multi-ram forging. The relationship between deformation force and stroke is simulated by rigid-plastic finite element software, and then verified by experiment .It has been shown that principal stress method are accurate in calculating the deformation force of multi-ram forging by comparing and analyzing the results of these three ways.

A Study of Brand Green Image in Relation to Eco-Branding of Fashion Products

2017 ◽  
Vol 866 ◽  
pp. 448-451 ◽  
Author(s):  
Chi Wai Kan ◽  
Cheby Yuen Ting Chow ◽  
Chamlong Sarikanon ◽  
Rattanaphol Mongkholrattanasit
Keyword(s):  
Linear Relationship ◽  
Brand Image ◽  
Vital Role ◽  
Consumer Trust ◽  
Branding Strategy ◽  
Fashion Products ◽  
Brand Reputation ◽  
Business Perspective ◽  
The Relationship

Eco-friendliness is the vital role of brand reputation in business perspective. Moreover, there is an increasing emphasis on branding and publicity to build brand image with consumer trust. It included strengthening sustainability in company, certifying claims made and presenting this to consumers by eco-branding and publicity. In this study, we examined the relationship between eco-branding and brand green image of fashion products and it was noted that they have linear relationship. This linear relationship between eco-branding and brand green image can not only demonstrate the importance of eco-branding strategy but also prove the consumers’ perception of sustainable consuming.

The Relationship between Deflection and Maximum Stress Distributed on the Layer Bottom in the Typical Semi-Rigid Bituminous Pavement Structure

2011 ◽  
Vol 97-98 ◽  
pp. 85-90 ◽  
Author(s):  
Zhi Zhong Zhao ◽  
Kui Li ◽  
Ning Zhang
Keyword(s):  
Finite Element ◽  
Maximum Stress ◽  
Structure Design ◽  
Construction Control ◽  
The Road ◽  
Finite Element Software ◽  
Pavement Structure ◽  
The Relationship ◽  
Highway Pavement

This article carries on the test to materials of the roadbed and the pavement in the room, and obtains mechanics computation parameter; Considered the road overload situation, we carries on the modeling computation to the typical semi-rigid bituminous pavement structure through using the finite element software; Carrying on the analysis, we obtains the correlation formula between the road deflection and various structures level maximum stress .it can provide the theory basis and the instruction experience for the highway pavement structure design, the examination and the construction control.

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