scholarly journals Effect of microstructure on anomalous strain-rate-dependent behaviour of bacterial cellulose hydrogel

2016 ◽  
Vol 62 ◽  
pp. 130-136 ◽  
Author(s):  
Xing Gao ◽  
Zhijun Shi ◽  
Andrew Lau ◽  
Changqin Liu ◽  
Guang Yang ◽  
...  
2001 ◽  
Author(s):  
Shi-Wei Ricky Lee ◽  
Lan Hong Dai

Abstract The present study is aimed at the experimental characterization of strain-rate dependent behaviour of solder materials under impulsive shear loading. In order to achieve this objective, a unique testing technique, namely, split Hopkinson torsion bar (SHTB) is employed. The solder material under investigation is 63Sn-37Pb. The experimental results indicate that the shear behavior of the solder joint is very sensitive to the strain rate and the dynamic shear strength of the solder joint is much higher than the static one.


2019 ◽  
Vol 25 (3) ◽  
pp. 284-298 ◽  
Author(s):  
Piyush Gaur ◽  
Khyati Verma ◽  
Anoop Chawla ◽  
Sudipto Mukherjee ◽  
Mohit Jain ◽  
...  

Author(s):  
Qiushi Zhang ◽  
Junyuan Zhang ◽  
Hao Zhou ◽  
Linan Wu

This paper focuses on the multi-scale modelling method for strain rate dependent behaviour of long fibre reinforced thermoplastics based on the Mori–Tanaka scheme. In the present work, the anisotropic and nonlinear viscoelastic–viscoplastic behaviour of an injection moulded plate are experimentally characterised, and the sensitive range of strain rates is discussed. Fibre orientation tensors, content and fibre length are measured and analysed based on micro computed tomography images at different positions of the plate. Further, a multi-scale material model considering microstructure variables, constitutive models of two phases and failure criteria, is proposed. The accuracy of the model is validated by finite element simulations, including five strain rates and three loading directions. The comparison results indicate that the calculated stress–strain curves show a good consistency with the experimental data.


1999 ◽  
Vol 39 (2) ◽  
pp. 69-82 ◽  
Author(s):  
Anna d’Onofrio ◽  
Francesco Silvestri ◽  
Filippo Vinale

2020 ◽  
Vol 47 ◽  
pp. 969-973
Author(s):  
Farzaneh Hassani ◽  
Peter. J. Martin ◽  
Brian. G. Falzon

2021 ◽  
Vol 250 ◽  
pp. 02029
Author(s):  
Maria Lißner ◽  
Daniel Thomson ◽  
Nik Petrinic ◽  
Jeroen Bergmann

Experimental results from 3D printed TPC (thermoplastic copolyester) compression specimens were used to develop a combined experimental-numerical framework to support the design of e.g. 3D printed mouthguards. First, a commercially available material model capable of representing the strain-rate dependent behaviour of materials undergoing large deformations is identified. Second, experimental results from solid 3D printed compression specimens are used to calibrate the identified material models. Third, 3D printed compression specimens with two different cavity geometries are used to assess the ability of the material model to accurately reproduce the experimental observations. The numerical investigation indicates a good representation of the strain rate dependent experimental results of 3D printed specimens.


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