Analytic, Numerical, and Stochastic Comparison of Forming Force Modeling at Deep Drawing and Backward Extrusion on the Same Al 99.5 F7 Parts

2007 ◽  
Vol 344 ◽  
pp. 419-426 ◽  
Author(s):  
Branimir Barisic ◽  
Miljenko Dino Math ◽  
Branko Grizelj
Keyword(s):  
Deep Drawing ◽  
Cost Reduction ◽  
Direct Application ◽  
Stochastic Comparison ◽  
Forming Force ◽  
Modeling And Analysis ◽  
Backward Extrusion ◽  
Force Modeling ◽  
Design And Manufacturing ◽  
Manufacturing Time

In order to determine the forming force in deep drawing and backward extrusion processes (on Al 99.5F7 specimens) the analytical, numerical and stochastic modeling and analysis of forming force on the basis of the Box-Wilson’s multi factorial experimental designs by use of rotatable experimental design were carried out. The goal of the paper is to predict the force in these different forming processes giving identical parts by means of different modeling approaches. This study will seek to compare the results of these modeling solutions with experimental results serving to check the correction and the verification of analytic, stochastic and numerically obtained results. Also, the scope of the present paper is to evaluate different parameters affecting these processes and to examine some experimental procedures in laboratory scale for the listed material in order to give more useful information in numerical and stochastic computations and also, to define the correlation among the parameters of these processes in order to improve the existing one and to raise it to a higher techno economic level. The increasing tendency for industrial parts cost reduction, quality improvement, materials savings, and the shortening of design and manufacturing time is more focused on this way of analysis of processes. These investigations are a basis for general conclusions about the forming force and they have a direct application in the projecting of these processes, tools and forming systems.

Fluid-structure Interactions

1998 ◽  
Vol 120 (04) ◽  
pp. 66-68 ◽  
Author(s):  
Klaus-Ju¨rgen Bathe
Keyword(s):  
Finite Element ◽  
Fluid Structure Interactions ◽  
Physical Processes ◽  
Fluid Structure ◽  
Modeling And Analysis ◽  
Structure Interaction ◽  
Design And Manufacturing ◽  
Physical Phenomena ◽  
Acoustic Fluid ◽  
Made In

This article reviews finite element methods that are widely used in the analysis of solids and structures, and they provide great benefits in product design. In fact, with today’s highly competitive design and manufacturing markets, it is nearly impossible to ignore the advances that have been made in the computer analysis of structures without losing an edge in innovation and productivity. Various commercial finite-element programs are widely used and have proven to be indispensable in designing safer, more economical products. Applications of acoustic-fluid/structure interactions are found whenever the fluid can be modeled to be inviscid and to undergo only relatively small particle motions. The interplay between finite-element modeling and analysis with the recognition and understanding of new physical phenomena will advance the understanding of physical processes. This will lead to increasingly better simulations. Based on current technology and realistic expectations of further hardware and software developments, a tremendous future for fluid–structure interaction applications lies ahead.

Detent Force Modeling and Analysis for Vertical Permanent-Magnet Linear Synchronous Motor Using Equivalent Magnetic Network Method

2011 ◽  
Vol 143-144 ◽  
pp. 148-153 ◽  
Author(s):  
Xiao Zhuo Xu ◽  
Xu Dong Wang ◽  
Hai Chao Feng ◽  
Ji Kai Si
Keyword(s):  
Permanent Magnet ◽  
Equivalent Circuit Model ◽  
Synchronous Motor ◽  
Iron Core ◽  
Modeling And Analysis ◽  
Force Modeling ◽  
Detent Force ◽  
Linear Synchronous Motor ◽  
Calculation Results ◽  
Magnetic Network

This paper investigates the detent force modeling of a slotted iron core type vertical permanent magnet linear synchronous motor (PMLSM) for ropeless elevator applications. Variable network non-linear magnetic equivalent circuit model is established to predict the detent force of PMLSM. The topology structure of equivalent magnetic circuit is developed and the permeances are derived and calculated. The end effect of two end teeth is essential for analysis of detent force and it is focused in the modeling. Magnetic saturation of primary iron-core also be taken into account. In final some 3-D finite-element numerical calculation results are used to validate the feasibility of the proposed method.

scholarly journals The Square Cup Deep Drawing by Variable Blank Holder Force(Machine Elements, Design and Manufacturing)

2010 ◽  
Vol 76 (766) ◽  
pp. 1617-1626 ◽  
Author(s):  
Satoshi KITAYAMA ◽  
Satoshi HAMANO ◽  
Koetsu YAMAZAKI ◽  
Tatsuo KUBO ◽  
Hikaru NISHIKAWA ◽  
...  
Keyword(s):  
Deep Drawing ◽  
Blank Holder Force ◽  
Blank Holder ◽  
Variable Blank Holder Force ◽  
Design And Manufacturing ◽  
Machine Elements

FEM Simulation of Metal Drawing Parts Forming Based on the ABAQUS Software

2012 ◽  
Vol 628 ◽  
pp. 123-127
Author(s):  
Zhi Gao Luo ◽  
Jun Li Zhao ◽  
Xu Dong Li ◽  
Jing Jing Zhang ◽  
Ying Qing Shao
Keyword(s):  
Deep Drawing ◽  
Metal Forming ◽  
Fem Simulation ◽  
Forming Process ◽  
Modeling And Analysis ◽  
Software Simulation ◽  
Metal Stamping ◽  
Simulation Results ◽  
Changes Over Time ◽  
Abaqus Software

In this paper, metal stamping deep drawing forming process was simulated by Abaqus software. first of all, metal deep drawing forming for finite element modeling and analysis. Then the simulation results of drawing parts metal forming were analyzed. Include the analysis of stress-strain changes over time and the most serious regional. To determine the position easy to crack in the process of metal drawing parts stamping. Finally, by stamping test to verify the position of the cracks by punching test whether compliance with the simulation results. Verify the accuracy of the Abaqus software in the process of stamping simulation. Verify the accuracy of the Abaqus software simulation in metal forming processes.

scholarly journals A Cost Model for 3D Woven Preforms

2022 ◽  
Vol 6 (1) ◽  
pp. 18
Author(s):  
James Clarke ◽  
Alistair McIlhagger ◽  
Dorian Dixon ◽  
Edward Archer ◽  
Glenda Stewart ◽  
...  
Keyword(s):  
Cost Reduction ◽  
Control Algorithm ◽  
Cost Model ◽  
Woven Fabrics ◽  
Learning Curves ◽  
Cost Information ◽  
Model Framework ◽  
Variate Analysis ◽  
Technical Cost ◽  
Manufacturing Time

Lack of cost information is a barrier to acceptance of 3D woven preforms as reinforcements for composite materials, compared with 2D preforms. A parametric, resource-based technical cost model (TCM) was developed for 3D woven preforms based on a novel relationship equating manufacturing time and 3D preform complexity. Manufacturing time, and therefore cost, was found to scale with complexity for seventeen bespoke manufactured 3D preforms. Two sub-models were derived for a Weavebird loom and a Jacquard loom. For each loom, there was a strong correlation between preform complexity and manufacturing time. For a large, highly complex preform, the Jacquard loom is more efficient, so preform cost will be much lower than for the Weavebird. Provided production is continuous, learning, either by human agency or an autonomous loom control algorithm, can reduce preform cost for one or both looms to a commercially acceptable level. The TCM cost model framework could incorporate appropriate learning curves with digital twin/multi-variate analysis so that cost per preform of bespoke 3D woven fabrics for customised products with low production rates may be predicted with greater accuracy. A more accurate model could highlight resources such as tooling, labour and material for targeted cost reduction.

Force Modeling in Single Point Incremental Forming of Variable Wall Angle Components

2011 ◽  
Vol 473 ◽  
pp. 833-840 ◽  
Author(s):  
Rogelio Pérez-Santiago ◽  
Isabel Bagudanch ◽  
Maria Luisa García-Romeu
Keyword(s):  
Incremental Forming ◽  
Single Point ◽  
Fem Simulation ◽  
Single Point Incremental Forming ◽  
Forming Force ◽  
Wall Angle ◽  
Important Indicator ◽  
Force Modeling ◽  
Variable Wall ◽  
Computational Intelligence Methods

Prediction of forming forces in Incremental Sheet Forming (ISF) is specially important in the case of using adapted machinery not designed for the process. Moreover, forming force is an important indicator that can be monitored on-line and utilized for real time process control. Besides experimentation, simulations based on the Finite Element Method (FEM) have been utilized as a reliable source of process force data. Nevertheless, the long solution times required to simulate ISF renders difficult its inclusion into a process optimization chain. In consequence, models that predict the forces required to manufacture simple parts have appeared. This work begins with a review of forming force models available for Single Point Incremental Forming (SPIF). Then, an equation recently proposed in the literature is compared with published experimental results of SPIF under different working conditions. The same data is employed to verify our own FEM simulations. Finally, the above-mentioned formula and FEM simulation were applied to predict the forming force of Variable Wall Angle (VWA) geometries where available force information is limited. Besides the applicability assessment of the equation, results will supplement a future experimental campaign focused in modeling geometries of intermediate complexity level by means of Computational Intelligence methods.

Contact force modeling and analysis for robotic tilted-disc polishing of freeform workpieces

2020 ◽  
Vol 66 ◽  
pp. 188-200
Author(s):  
MuBang Xiao ◽  
Ye Ding ◽  
Zaojun Fang ◽  
Guilin Yang
Keyword(s):  
Contact Force ◽  
Modeling And Analysis ◽  
Force Modeling ◽  
Tilted Disc
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