Residual Stress In Sheet Metal Parts Made By Incremental Forming Process

Tanaka, Shigekazu; Nakamura, Tamotsu; Hayakawa, Kunio; Nakamura, H.; Motomura, Kazuo

doi:10.1063/1.2740904

Cited by 42 publications

(19 citation statements)

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“…Furthermore, it is well known that the main cause of springback is the residual stress distribution throughout the parts, generated as results of the forming process, which is another aspect insufficiently treated in the scientific literature. It is worth noticing here the contribution of Tanaka et al [8] who studied the residual stress in the sheet metal parts obtained by incremental forming. Through the study, it was discovered that different types of residual stress are generated on the upper and the lower layers of material, this difference creating a negative springback when the part is trimmed off.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Residual Stresses on the Accuracy of Parts Processed by SPIF

Radu

Tâmpu

Cristea

et al. 2013

Materials and Manufacturing Processes

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The aim of the present work was to investigate the residual stresses distribution within parts processed by single point incremental forming (SPIF) as a function of the working parameters and to determine its influence on the parts accuracy. The study was performed for a double frustum of pyramid made by 304 stainless steel. An experimental analysis was first conducted by using the strain-rosette method. Since the method allowed determining the residual stresses only locally, a numerical model was then elaborated to inspect the distribution of residual stresses throughout the whole part. It was found that a favorable state of residual stresses and implicitly a good accuracy of parts can be obtained when small values of tool diameter and tool vertical steps, respectively high values of feed rate and spindle speed, are used.

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Section: Introductionmentioning

confidence: 99%

The Effect of Residual Stresses on the Accuracy of Parts Processed by SPIF

Radu

Tâmpu

Cristea

et al. 2013

Materials and Manufacturing Processes

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“…Results showed that "tension residual stress is produced in the upper layer of the sheet and compression stress in the lower", furthermore the stress is increasing with the increase of the tool diameter [11].…”

Section: ─ Two Points Incremental Forming (Tpif)mentioning

confidence: 97%

“…Experimental Investigations and Numerical Analysis were carried out by Shigekazu Tanaka et al [11] to examine the residual stress in sheet metal parts obtained by incremental forming operations because distortion were observed after removing the outer portion of the incremental formed sheet metal part. Results showed that "tension residual stress is produced in the upper layer of the sheet and compression stress in the lower", furthermore the stress is increasing with the increase of the tool diameter [11].…”

Section: ─ Two Points Incremental Forming (Tpif)mentioning

confidence: 99%

Re-make of Sheet Metal Parts of End of Life Vehicles - Research on Product Life-Cycle Management

Kovács

Paniti

2013

IFIP Advances in Information and Communication Technology

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Abstract. Today it can be accepted as fact that mankind is running out and will soon have shortages of energy, row materials and water. Sustainable development (or more often used sustainability) means to use as little materials, energy and water as possible. Material saving causes energy and water saving as well. Product Life Cycle Management (PLCM) of any kind of product starts when the idea of a product is born and lasts until complete dismissal through steps as detailed design, assembly design, part manufacturing, assembly, testing, diagnostics and operation, advertisement, service, maintenance, etc. Then finally our topics, namely dismantling/ disassembly and dismissal are coming. Dismissal often can be substituted by re-cycling or re-use, or re-make.

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“…This in turn increases the bending at the opening region although it reduces the deviation in the wall region. Tanaka et al (2007) have used a backup tool that comes in contact with the work piece intermittently (following sinusoidal path) during SPIF. Finite element analysis has demonstrated that this strategy reduces the residual stress gradients and in turn enhances the component accuracy.…”

Section: Accuracy and Surface Finishmentioning

confidence: 99%