Scaling of metal forming processes

Al-Tamimi, Anees; Darvizeh, Rooholamin; Davey, Keith

doi:10.1016/j.proeng.2017.10.1132

Cited by 7 publications

(2 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…3,4 It should be noted that even though the scale changing for generalization of experimental results has been extensively used in fluid and dynamic applications, not much attention is paid to its usage it in metal forming application. 5,6…”

Section: Introductionmentioning

confidence: 99%

Development a new methodology for measuring deep drawing forces based on dimensionless evaluation

Hajiahmadi

Elyasi

Shakeri

2020

Proceedings of the Institution of Mechanical Engineers, Part C:

View full text Add to dashboard Cite

In this research work, dimensionless models based on geometric parameters have been developed for the deep drawing process of rectangular cups to reduce the manufacturing costs on a large scale of application in a noticeable way. In the following, geometric parameters were given in dimensionless form by the Π-Buckingham dimensional analysis method and a series of dimensionless groups were found for both circular and rectangular initial blank. To find the best group of dimensionless geometric parameters, different cup scales 1:1, 2:1, 4:1 and 5:1 are evaluated numerically by ABAQUS Finite Element (FE) software, validated by experimental work. After all effective geometric parameters have been analyzed, the best fitting relational model of dimensionless parameters is found for rectangular and circular blank separately. Various thicknesses of St12 sheet metals were used for experimental validation, which were formed at room temperature. Also, results and response parameters were compared in the simulation process, experimental tests and dimensionless models. By looking at the outcomes, it is demonstrated that the geometric qualities of a large scale can be predicted by a small scale, utilizing the proposed dimensionless model. A comparison of the outcomes for dimensionless models and experimental tests shows that proposed dimensionless models have a high degree of precision in determining geometrical parameters and the prediction of drawing force. Furthermore, the dimensionless analysis was generalized to ensure high precision estimation of geometric values for large geometric scales.

show abstract

Section: Introductionmentioning

confidence: 99%

Development a new methodology for measuring deep drawing forces based on dimensionless evaluation

Hajiahmadi

Elyasi

Shakeri

2020

Proceedings of the Institution of Mechanical Engineers, Part C:

View full text Add to dashboard Cite

show abstract

“…The scaling work is founded on the idea that scaling can be achieved through the expansion/contraction of space itself. The first application of the concept was to metal-forming processes [24], [25]. More recently the same method has been validated in bio-mechanical experimentation under isotropic scaling [26] and in the scaling of the powder compaction process [27].…”

Section: Introductionmentioning

confidence: 99%

A tessellated continuum approach for the static analysis of perforated structures

Davey

Darvizeh

Sedqi

2020

Computers & Structures

Self Cite

View full text Add to dashboard Cite

Pre-fractals have the capacity to represent structures of different levels of complexity and have recently been shown to be suitable for continuum analysis using a method called tessellated continuum mechanics. Tessellated continuum mechanics is an analytical theory for the analysis of porous/perforated structures but presently has only been tested to any extent on heat transfer problems.This paper is concerned with extending the implementation of the tessellated approach to static structural analysis of one and two dimensions with a particular emphasis on perforated plates. The principal objective of the work is to establish that the structural analysis of perforated structures is possible to a very high degree of accuracy in a continuum mechanics framework. The tessellated approach involves the local expansion of space to close perforations and invokes the concept of finite similitude, which has appeared in the recent literature.The consequences of local-space scaling are examined and static testing for beams and plates, constrained by different boundary conditions are presented.

show abstract