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Experimental validation of the new modular application of the upper bound theorem in indentation.

Bermudo C, Martín F, Martín MJ, Sevilla L - PLoS ONE (2015)

Bottom Line: The analytical model is originated from the Upper Bound Theorem application by means of its new modular distribution.The experimental validation is performed through a series of indentation tests with work-pieces of annealed aluminium EN AW-2030 and punches of steel AISI 304, under plane strain conditions.The results are compared with the ones obtained from the application of this new modular distribution of the Upper Bound Theorem, showing a good approximation and suitability of the model developed for an indentation-based process.

View Article: PubMed Central - PubMed

Affiliation: Department of Civil, Material and Manufacturing Engineering, University of Malaga, Malaga, Spain.

ABSTRACT
Nowadays, thanks to the new manufacturing processes, indentation is becoming an essential part of the new arising processes such as the Incremental Forming Processes. This work presents the experimental validation of the analytical model developed for an indentation-based process. The analytical model is originated from the Upper Bound Theorem application by means of its new modular distribution. The modules considered are composed of two Triangular Rigid Zones each. The experimental validation is performed through a series of indentation tests with work-pieces of annealed aluminium EN AW-2030 and punches of steel AISI 304, under plane strain conditions. The results are compared with the ones obtained from the application of this new modular distribution of the Upper Bound Theorem, showing a good approximation and suitability of the model developed for an indentation-based process.

No MeSH data available.


Related in: MedlinePlus

Tested samples.Stress-strain curve and tensile samples after tensile test.
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pone.0122790.g006: Tested samples.Stress-strain curve and tensile samples after tensile test.

Mentions: After the tensile test is conducted (Fig 6), the stress-strain curve can be plotted. By applying the standard E 646–00 [20] used for the determination of n and K, each value is obtained for aluminum EN AW-2030 after annealing. These values are n = 0.26 and K = 404.66 MPa. Eventually, implement the characteristics of the material in the UBT analysis and obtaining the efforts needed to achieve the plastic deformation specified is possible.


Experimental validation of the new modular application of the upper bound theorem in indentation.

Bermudo C, Martín F, Martín MJ, Sevilla L - PLoS ONE (2015)

Tested samples.Stress-strain curve and tensile samples after tensile test.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4380347&req=5

pone.0122790.g006: Tested samples.Stress-strain curve and tensile samples after tensile test.
Mentions: After the tensile test is conducted (Fig 6), the stress-strain curve can be plotted. By applying the standard E 646–00 [20] used for the determination of n and K, each value is obtained for aluminum EN AW-2030 after annealing. These values are n = 0.26 and K = 404.66 MPa. Eventually, implement the characteristics of the material in the UBT analysis and obtaining the efforts needed to achieve the plastic deformation specified is possible.

Bottom Line: The analytical model is originated from the Upper Bound Theorem application by means of its new modular distribution.The experimental validation is performed through a series of indentation tests with work-pieces of annealed aluminium EN AW-2030 and punches of steel AISI 304, under plane strain conditions.The results are compared with the ones obtained from the application of this new modular distribution of the Upper Bound Theorem, showing a good approximation and suitability of the model developed for an indentation-based process.

View Article: PubMed Central - PubMed

Affiliation: Department of Civil, Material and Manufacturing Engineering, University of Malaga, Malaga, Spain.

ABSTRACT
Nowadays, thanks to the new manufacturing processes, indentation is becoming an essential part of the new arising processes such as the Incremental Forming Processes. This work presents the experimental validation of the analytical model developed for an indentation-based process. The analytical model is originated from the Upper Bound Theorem application by means of its new modular distribution. The modules considered are composed of two Triangular Rigid Zones each. The experimental validation is performed through a series of indentation tests with work-pieces of annealed aluminium EN AW-2030 and punches of steel AISI 304, under plane strain conditions. The results are compared with the ones obtained from the application of this new modular distribution of the Upper Bound Theorem, showing a good approximation and suitability of the model developed for an indentation-based process.

No MeSH data available.


Related in: MedlinePlus