International Journal of Engineering, Management & Sciences (IJEMS) ISSN-2348 –3733, Volume -2, Issue-3, March 2015
Optimization of Process Parameters By Incremental Sheet Metal (ISM) Technique Uses Finite Element Methods Neeraj Kumar Sharma, Sharad Shrivastava
Abstract— In the present days, due to increasing the demand of flexible manufacturing we study more on the incremental forming process. The incremental forming process is mostly use in all manufacturing plant to reduce the cost and improve the quality of the product by making of different prototype.
partial support. In figure all three processes are show the position of work pieces. Most impotent point is that blank holder is always moves in vertical direction. When the blank holders follow the punch movements towards the increments called TPF; this way strains will happen only in the punch contact region.
In this work we find the main parameter which influences the strain rate in square cup shape. This parameter find by applying different combination between parameters. These results will be as same as experimental result. Index Terms— Incremental forming,forming strategy, Finite Element Methods, Anova Analysis, D.O.E.
I. INTRODUCTION The incremental forming processes mainly consist of spherical punch which is used to develop the strain in the object. The final geometry of the object will be calculated according to the total strain developed in the object. The incremental forming process divided in two groups as: single point incremental forming (SPIF) and the other will call two points forming process. In the SPF are further divide in to two parts first called negative type and other will called positive According to figure 1. When we applied the outside called negative if inside than called positive.
Figure 1 types of SPF a. Negative Process b. Positive The presence of the die in process will be use to classification of processes in SPF and TPF. According the position of the work piece under the die it can be classified complete or Manuscript received March 09, 2015 Neeraj Kumar Sharma, Mechanical Department, Rajasthan institute of engineering & technology, Jaipur, Rajasthan, India Sharad Shrivastava, Mechanical Department, Rajasthan institute of engineering & technology, Jaipur, Rajasthan, India.
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Figure 2 types of Incremental forming process. a. SPF b. partial TPF; c. complete TPF II. LITERATURE REVIEW According to J. León, D. Salcedo et al [1] ISF method may be open in the field of sheet metal forming process, but regularly in asymmetric incremental deformation process. Many type of studies has been done out on the influence of different parameters in the process. Some publisher explains the influence of these parameters using design of experiments by finite element. Different parameters (design factors) have been selected, their influence on several study variables (response variables) has been evaluated through the use of both design of experiments and FEM simulations. As design factors, the following of them have been selected: the sheet thickness, the friction coefficient, the tool radius and the number of turns for the tool modeling. Researcher name as Y. Fang and B. Lu et al [2], they detailed a methodical representation for SPIF process to develop a mechanism known as localized deformation mechanism which is considered as both bending and strain is hardening. Their result is used to clarify the stress which is developing in deformation zone. According to the result we know that the deformation occurs not only in the contact resign but also the neighboring wall. The product also reveals that in between the transitional zone and the contact area along with formed wall there is a fractured will occurred. So to analyze methodical result, utilize the SPIF simulation and experiment result.
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