Large deformation extensional rheology of bread dough

Charalambides, M.N.; Wanigasooriya, Leonard; Williams, J. G.; Goh, Suk Meng; Chakrabarti, S.

doi:10.1007/s00397-006-0104-4

Cited by 53 publications

(23 citation statements)

References 27 publications

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“…Assuming a separable time-and strain-dependent material behaviour [19], [20], the relaxation stress under a step strain loading history is written as:…”

Section: Matrix Materialsmentioning

confidence: 99%

Modelling the damage and deformation process in a plastic bonded explosive microstructure under tension using the finite element method

Arora

Tarleton

Li-Mayer

et al. 2015

Computational Materials Science

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Modelling the deformation and failure processes occurring in polymer bonded explosives (PBX) and other energetic materials is of great importance for processing methods and lifetime storage purposes. Crystal debonding is undesirable since this can lead to contamination and a reduction in mechanical properties. An insensitive high explosive (PBX-1) was the focus of the study. This binary particulate composite consists of (TATB) filler particles encapsulated in a polymeric binder (KELF800). The particle/matrix interface was characterised with a bi-linear cohesive law, the filler was treated as elastic and the matrix as visco-hyperelastic. Material parameters were determined experimentally for the binder and the cohesive parameters were obtained previously from Williamson et al. (2014) and Gee et al. (2007) for the interface. Once calibrated, the material laws were implemented in a finite element model to allow the macroscopic response of the composite to be simulated. A finite element mesh was generated using a SEM image to identify the filler particles which are represented as a set of 2D polygons. Simulated microstructures were also generated with the same size distribution and volume fraction only with the idealised assumption that the particles are a set of circles in 2D and spheres in 3D. The various model results were compared and a number of other variables were examined for their influence on the global deformation behaviour such as strain rate, cohesive parameters and contrast between filler and matrix modulus. The overwhelming outcome is that the geometry of the particles plays a crucial role in determining the onset of failure and the severity of fracture in relation to whether it is a purely local or global failure. The model was validated against a set of uniaxial tensile tests on PBX-1 and it was found that it predicted the initial modulus and failure stress and strain well.

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“…Assuming a separable time-and strain-dependent material behaviour [19], [20], the relaxation stress under a step strain loading history is written as:…”

Section: Matrix Materialsmentioning

confidence: 99%

Modelling the damage and deformation process in a plastic bonded explosive microstructure under tension using the finite element method

Arora

Tarleton

Li-Mayer

et al. 2015

Computational Materials Science

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show abstract

“…Dough extensional stresses derived from the filament stretching device (Lab1_F in Fig. 3) were found to be significantly larger than those reported by Charalambides et al (2006). In the latter study, dough was stretched only in one direction using an Instron 5543 and specimens were rested in sample holder for 45 min before extension.…”

Section: 222mentioning

confidence: 51%

“…An inter-laboratory comparison was made for dough extension by making and testing the same dough as used by Charalambides et al (2006). Dough was prepared by using the same flour, the same mixer and the same method of mixing.…”

Section: 222mentioning

confidence: 99%

Computational modeling of dough sheeting and physical interpretation of the non-linear rheological behavior of wheat flour dough

Chakrabarti-Bell

Bergström²,

Lindskog

et al. 2010

Journal of Food Engineering

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“…Dough rheology is a good example of an industrial-based characterization method with strong standing in food rheology; it cannot be easily replaced, even though it might be hampered by non-ideal flow properties. Approaches that aim to introduce extensional rheometry [82][83][84][85][86] are extremely useful to understand the material but are complicated by the fact that measuring devices are expensive, do not operate in the production time scale, and do not provide instrumental readings easily be transferred to the process or to the baker at four o'clock in the morning.…”

Section: Complex Flow Phenomena In Multiscale Food Systemsmentioning

confidence: 99%