scholarly journals The influence of rib shapes on its realization in drawing process with elastic tool

Mechanik ◽  
2018 ◽  
Vol 91 (12) ◽  
pp. 1078-1080
Author(s):  
Mariusz Krakowski ◽  
Jarosław Bartnicki
Keyword(s):  
Numerical Analysis ◽  
3D Printing ◽  
Sheet Metal ◽  
Sheet Metal Forming ◽  
Metal Forming ◽  
Laboratory Research ◽  
Drawing Process ◽  
Technological Parameters ◽  
Printing Technology ◽  
3D Printing Technology

The paper deals with the drawing process by means of elastic tools. Numerical analysis of this kind of sheet metal forming were realized for chosen rib shapes. Changes of radius and rib height values were useful for technological parameters verification taking into consideration planned final parts geometry. In this work the comparison between numerical analysis results and laboratory research using 3D printing technology are presented.

APPLICATION OF 3D PRINTING TECHNOLOGY FOR RAPID TOOLING IN SHEET METAL FORMING

2020 ◽  
Vol 3 ◽  
pp. 20-30
Author(s):  
M.A. SEREZHKIN ◽  
D.O. KLIMYUK ◽  
A.I. PLOKHIKH
Keyword(s):  
3D Printing ◽  
Sheet Metal ◽  
Sheet Metal Forming ◽  
Metal Forming ◽  
Rapid Tooling ◽  
Printing Technology ◽  
3D Printing Technology ◽  
3D Printed ◽  
Printed Materials ◽  
Printing Parameters

The article presents the study of the application of 3D printing technology for rapid tooling in sheet metal forming for custom or small–lot manufacturing. The main issue of the usage of 3D printing technology for die tooling was discovered. It is proposed to use the method of mathematical modelling to investigate how the printing parameters affect the compressive strength of FDM 3D–printed parts. Using expert research methods, the printing parameters most strongly affecting the strength of products were identified for further experiments. A method for testing the strength of 3D–printed materials has been developed and tested.

Application of 3D Printing for Specific Tools

2016 ◽  
Vol 862 ◽  
pp. 316-323 ◽  
Author(s):  
Petr Zelený ◽  
Tomáš Váňa ◽  
Jaroslav Stryal
Keyword(s):  
3D Printing ◽  
Production Process ◽  
Sheet Metal ◽  
Sheet Metal Forming ◽  
Metal Forming ◽  
Appropriate Technology

This article describes possibilities of utilizing 3D printing technologies for production of specific tools for sheet metal forming which would help to simplify and accelerate manufacturing of prototypes for the electronic industry.The article contains a number of technologies and their combinations. In conclusion, the most appropriate technology is determined along with implementation of the procedure into a production process.

Experimental investigation into a new hybrid-forming process: Incremental stretch drawing

2016 ◽  
Vol 232 (3) ◽  
pp. 475-486 ◽  
Author(s):  
Puneet Tandon ◽  
Om Namah Sharma
Keyword(s):  
Experimental Investigation ◽  
Sheet Metal ◽  
Sheet Metal Forming ◽  
Metal Forming ◽  
Lead Time ◽  
Drawing Process ◽  
Forming Process ◽  
Setup Cost ◽  
Deep Drawing Process ◽  
Incremental Sheet Metal Forming

Incremental sheet metal forming is an evolving process, which is suitable for the production of limited quantities of sheet metal components. The main advantages of this process over conventional forming processes are reduced setup cost and manufacturing lead time, as it eliminates the need of special purpose dies, improves formability, reduces forming forces, and provides process flexibility. The objective of this work is to investigate a new hybrid-forming process, which intends to combine incremental sheet metal forming with deep drawing process and has been named as “incremental stretch drawing.” A number of setups and fixtures were developed to carry out experiments to achieve incremental stretch drawing and understand the mechanism of the process. This process addresses some of the challenges of incremental sheet metal forming, that is, limited formability in terms of forming depth, especially at steeper wall angles and subsequent thinning of sheet. It is observed that the proposed process is able to reduce thinning as much as about 300%, considering same forming depth for incremental sheet metal forming and incremental stretch drawing processes. Improvement in formability, in terms of forming depths, also has been observed to be near about 100% in particular cases.

Experimental Test and FEA of a Sheet Metal Forming Process of Composite Material and Steel Foil in Sandwich Design Using LS-DYNA

2015 ◽  
Vol 651-653 ◽  
pp. 439-445 ◽  
Author(s):  
Bernd Arno Behrens ◽  
Milan Vucetic ◽  
A. Neumann ◽  
Tomasz Osiecki ◽  
Nenad Grbic
Keyword(s):  
Composite Material ◽  
Numerical Analysis ◽  
Sheet Metal ◽  
Sheet Metal Forming ◽  
Metal Forming ◽  
Material Design ◽  
Unidirectional Composite ◽  
Forming Process ◽  
Metal Forming Process ◽  
Steel Foils

A structural concept in multi-material design is used in the automotive industry with the aim of achieving significant weight reductions of conventional car bodies. In this respect, the specific use of steel foils and continuous fiber-reinforced thermoplastics represents an interesting material combination for the production of hybrid parts in sandwich design. This contribution deals with the experimental and numerical analysis of a conventional sheet metal forming process using a composite material based on Polyamide 6 (PA6) with unidirectional endless glass fiber reinforcement and HC220Y+ZE steel foil. A unidirectional composite plate is positioned between two steel foils in sandwich design and formed under appropriate temperature conditions. For the numerical analysis of the forming process the software LS-DYNA is used.

Establish the Model of Parameters Optimization of Sheet Metal Forming in Drawing Process Based on Artificial Neural Network

2014 ◽  
Vol 1037 ◽  
pp. 79-82
Author(s):  
Wen Qiong Zhang ◽  
Yong Xian Li ◽  
Wei Wei
Keyword(s):  
Neural Network ◽  
Sheet Metal ◽  
Sheet Metal Forming ◽  
Metal Forming ◽  
Functional Model ◽  
Parameters Optimization ◽  
Drawing Process ◽  
Test Results ◽  
Evaluation Indexes ◽  
And Performance

The paper establishes the objective functional model of sheet metal forming in drawing process with ANN, a mapping between sheet forming parameters and performance evaluation indexes was built, which provides important preferences for researching and optimizing these parameters. It obtains neural network model of high precision through the training of cross experiment method. At last a model was built. According to the test results, the error of the network were less than 5%.That means the network is available, and also it establishes foundation of the process parameters optimization.

scholarly journals Modularity design of the bamboo plastic fiber forming machine

2021 ◽  
Vol 327 ◽  
pp. 05004
Author(s):  
Nguyen Thanh Nam ◽  
Nguyen Hoang Hiep
Keyword(s):  
3D Printing ◽  
High Surface ◽  
Fiber Material ◽  
Wood Fibers ◽  
Natural Polymers ◽  
Technological Parameters ◽  
Printing Technology ◽  
3D Printing Technology ◽  
Almost All ◽  
The Cost

Currently, the research on the application of bamboo wood plastic fibers to 3D printing technology in Vietnam is limited. Almost all studies mainly focus on the application of natural polymers (wood, rubber, coir..) but ignore a rich natural polymer source, popular in Vietnam: bamboo. In addition, the quality of wood plastic fibers applied in 3D printing technology has not responded to the requirements of consumers. The durability of 3D printed parts that is based on wood plastic fibers is not high. Surface gloss of parts after implementation is still rough. During the 3D printing process of wood plastic fibers material, the nozzle is still always clogged due to the blockage of wood pulp. Therefore, the study of technology and equipment for the fabrication of bamboo wood fibers and research on the effect of technological parameters on the finished bamboo-wood-plastic fiber properties is necessary and should be urgently carried out. The paper proposes a new approach to structure modularization of the bamboo wood plastic fiber forming machine by using mostly standard parts, thus improving the quality and reducing the cost of the machine and bamboo wood plastic fiber material for the 3D printer.

Study on Loading Path Influences on the Thickness Distribution of TRIP Steels During Sheet Metal Forming

2009 ◽  
Author(s):  
W. J. Dan ◽  
W. G. Zhang ◽  
S. H. Li
Keyword(s):  
Sheet Metal ◽  
Sheet Metal Forming ◽  
Metal Forming ◽  
Martensite Transformation ◽  
Strain State ◽  
Thickness Distribution ◽  
Loading Path ◽  
Drawing Process ◽  
Deep Drawing Process ◽  
Forming Temperature

Loading path is one of key factors that influence the formability of sheet metal forming processes. In this study, the effect of several kinds of loading paths on the thickness distribution of TRIP steel is investigated in a deep drawing process based on a constitutive model accompanying the strain-induced martensite transformation. A kinetic model of transformation, that describes the relationship between the thickness distribution of a deep drawing process and the martensite transformation, is used to calculate the martensite volume fraction. The influences of loading path on the martensite transformation are also evaluated through the change in the stress-strain state, the forming temperature, the transformation driving force, the nucleation site probability and the shear-band intersection controlled by the stress-strain state and forming temperature at the minimum thickness location in the formed part.

scholarly journals Numerical analysis on the elastic deformation of the tools in sheet metal forming processes

2016 ◽  
Vol 100-101 ◽  
pp. 270-285 ◽  
Author(s):  
D.M. Neto ◽  
J. Coër ◽  
M.C. Oliveira ◽  
J.L. Alves ◽  
P.Y. Manach ◽  
...  
Keyword(s):  
Numerical Analysis ◽  
Sheet Metal ◽  
Elastic Deformation ◽  
Sheet Metal Forming ◽  
Metal Forming

Deep Drawing Process Design: A Multi Objective Optimization Approach

2009 ◽  
Vol 410-411 ◽  
pp. 601-608 ◽  
Author(s):  
Rosanna Di Lorenzo ◽  
Giuseppe Ingarao ◽  
Laura Marretta ◽  
Fabrizio Micari
Keyword(s):  
Sheet Metal ◽  
Sheet Metal Forming ◽  
Metal Forming ◽  
Optimal Solution ◽  
Optimization Procedure ◽  
Pareto Optimal Solution ◽  
Pareto Optimal ◽  
Drawing Process ◽  
Deep Drawing Process ◽  
Design Variables

In sheet metal forming most of the problems are multi objective problems, generally characterized by conflicting objectives. The definition of proper parameters aimed to prevent both wrinkles and fracture is a typical example of an optimization problem in sheet metal forming characterized by conflicting goals. What is more, nowadays, a great interest would be focused on the availability of a cluster of possible optimal solutions instead of a single one, particularly in an industrial environment. Thus, the design parameters calibration, accomplishing all the objectives, is difficult and sometimes unsuccessful. In order to overcome this drawback a multi-objectives optimization procedure based on Pareto optimal solution search techniques seems a very attractive approach to deal with sheet metal forming processes design. In this paper, an integration between numerical simulations, response surface methodology and Pareto optimal solution search techniques was applied in order to design a rectangular deep drawing process. In particular, the initial blank shape and the blank holder force history were optimized as design variables in order to accomplish two different objectives: reduce excessive thinning and avoid wrinkling occurrence. The steps of the optimization procedure include: 1) application of Central Composite Design (CCD) for the identification of the necessary data over the domain of variation of the design variables; 2) numerical simulations of the samples identified by CCD; 3) development of a response surface model to interpret the final objectives as functions of the design variables; 4) Pareto optimal solution analysis to reach the most performing design variables. The final aim is to develop a predictive tool able to identify a sort of process window for the analyzed process also minimizing the computational effort in particular with respect to mono-objective optimization techniques or traditional trial and error methods. Many possible technological scenarios were investigated by the implemented procedure and a set of reliable solutions, i.e. able to satisfy different design requirements, were obtained.

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