Sökning: id:"swepub:oai:DiVA.org:ri-64390" >
Improvement of modi...
Improvement of modified maximum force criterion for forming limit diagram prediction of sheet metal
-
- Tuan Pham, Quoc (författare)
- Blekinge Tekniska Högskola,Institutionen för maskinteknik
-
- Islam, Md. Shafiqul, 1984- (författare)
- Blekinge Tekniska Högskola,Institutionen för maskinteknik
-
- Sigvant, Mats (författare)
- Blekinge Tekniska Högskola,Institutionen för maskinteknik
-
visa fler...
-
- Pérez Caro, Lluís, 1985- (författare)
- RISE,Tillverkningsprocesser,RISE Research Institutes of Sweden
-
- Lee, Myoung-Gyu (författare)
- Seoul National University, South Korea
-
- Kim, Young-Suk (författare)
- Kyungpook National University, South Korea
-
visa färre...
-
(creator_code:org_t)
- Elsevier Ltd, 2023
- 2023
- Engelska.
-
Ingår i: International Journal of Solids and Structures. - : Elsevier Ltd. - 0020-7683 .- 1879-2146. ; 273
- Relaterad länk:
-
https://doi.org/10.1...
-
visa fler...
-
https://bth.diva-por... (primary) (Raw object)
-
https://urn.kb.se/re...
-
https://doi.org/10.1...
-
https://urn.kb.se/re...
-
visa färre...
Abstract
Ämnesord
Stäng
- This study presents a new criterion (MMFC2) for predicting the forming limit curve (FLC) of sheet metal. The strain path evolution of a critical element examined in a uniaxial tensile test is elaborated by incorporating the results of experimental measurement, finite element simulation, and theoretical prediction via the Modified Maximum Force Criterion (MMFC). A scaling factor is introduced to mimic the theoretical evaluation with the simulated one. It is believed that the rotation of the principal axes of the theoretically considering material point, which is initially co-axial with the external load coordinate, implicates the macro track of the strain path change. Furthermore, an optimal event of the second derivative of the axial rotations is proposed to indicate the strain localization and formulate the FLC. The performance of the proposed criterion is compared with that of the original MMFC in predicting the FLC of three automotive sheet metals, of which all related data were published in the Benchmark of Numisheet 2014 conference. The use of three different hardening laws and three yield functions is examined in the analogy. The comparison reveals that the results of MMFC2 are more sensitive to the employed constitutive model than that of MMFC. Furthermore, the proposed MMFC2 presents concordant results with the experimental data. Nakajima tests are conducted for CR4 mild steel sheets to validate the capacity of the proposed criterion. Well agreement between the experimentally measured data and theoretical prediction based on the Yld2k yield function verifies its usefulness in practice. © 2023 The Author(s)
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik -- Teknisk mekanik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering -- Applied Mechanics (hsv//eng)
Nyckelord
- Diffuse neck
- Forming limit diagram
- Localized neck
- Modified maximum force criterion
- Sheet metal
- Benchmarking
- Tensile testing
- Forming limit curve
- Forming limit diagrams
- Localised
- Maximum forces
- Modified maximum force criteria
- Path evolutions
- Strain paths
- Yield function
- Forecasting
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
Hitta via bibliotek
Till lärosätets databas