scholarly journals Creep dynamics of athermal amorphous materials: a mesoscopic approach

Soft Matter ◽  
2018 ◽  
Vol 14 (41) ◽  
pp. 8306-8316 ◽  
Author(s):  
Chen Liu ◽  
Ezequiel E. Ferrero ◽  
Kirsten Martens ◽  
Jean-Louis Barrat
Keyword(s):  
Strain Rate ◽  
Yield Stress ◽  
Crucial Role ◽  
Amorphous Materials ◽  
Initial Condition ◽  
Spatial Correlations ◽  
Linear Dynamics ◽  
Slowing Down ◽  
Rate Acceleration ◽  
Experimental Strain

Mesoscale elasto-plastic models are shown to capture the non-linear dynamics of yield stress fluids, reproducing the typical experimental strain rate responses to different applied steps in stress. Moreover, they help us to understand basic processes (e.g. spatial correlations) involved in the strain rate slowing down (creep) and the strain rate acceleration (fluidization) phases, and the crucial role played by the initial condition.

Influence of initial water content and strain rate on remolded yield stress in marine clay

2021 ◽  
pp. 1-8
Author(s):  
Xiaobing Li ◽  
Jianpeng Chen ◽  
Xiuqing Hu ◽  
Hongtao Fu ◽  
Jun Wang ◽  
...  
Keyword(s):  
Strain Rate ◽  
Water Content ◽  
Yield Stress ◽  
Initial Water Content ◽  
Marine Clay ◽  
Initial Water

A Modified Peric Model for Al-Mg Alloy Sheet with Rate-Independent Initial Yield Stress at Warm Temperatures

2019 ◽  
Vol 287 ◽  
pp. 3-7
Author(s):  
Yong Zhang ◽  
Qing Zhang ◽  
Yuan Tao Sun ◽  
Xian Rong Qin
Keyword(s):  
Flow Stress ◽  
Plastic Strain ◽  
Strain Rate ◽  
Yield Stress ◽  
Constitutive Models ◽  
Mg Alloy ◽  
Initial Yield Stress ◽  
Initial Yield ◽  
Rate Dependent ◽  
Dependent Flow

The constitutive modeling of aluminum alloy under warm forming conditions generally considers the influence of temperature and strain rate. It has been shown by published flow stress curves of Al-Mg alloy that there is nearly no effect of strain rate on initial yield stress at various temperatures. However, most constitutive models ignored this phenomenon and may lead to inaccurate description. In order to capture the rate-independent initial yield stress, Peric model is modified via introducing plastic strain to multiply the strain rate, for eliminating the effect of strain rate when the plastic strain is zero. Other constitutive models including the Wagoner, modified Hockett–Sherby and Peric are also considered and compared. The results show that the modified Peric model could not only describe the temperature-and rate-dependent flow stress, but also capture the rate-independent initial yield stress, while the Wagoner, modified Hockett–Sherby and Peric model can only describe the temperature-and rate-dependent flow stress. Moreover, the modified Peric model could obtain proper static yield stress more naturally, and this property may have potential applications in rate-dependent simulations.

The effect of strain rate on the anomalous peak of yield stress in β-CuZn alloy

1998 ◽  
Vol 39 (9) ◽  
pp. 1289-1294 ◽  
Author(s):  
Kee Ahn Lee ◽  
Chong Soo Lee
Keyword(s):  
Strain Rate ◽  
Yield Stress ◽  
Anomalous Peak ◽  
Cuzn Alloy

scholarly journals Влияние гигантской магнитострикции на динамический предел текучести в условиях высокоскоростной деформации

2021 ◽  
Vol 63 (12) ◽  
pp. 2070
Author(s):  
В.В. Малашенко
Keyword(s):  
High Strain Rate ◽  
Strain Rate ◽  
Yield Stress ◽  
High Strain ◽  
Dynamic Yield Stress ◽  
High Strain Rate Deformation ◽  
Dynamic Yield ◽  
Giant Magnetostriction

The high-strain rate deformation of crystals with giant magnetostriction is theoretically analyzed. It is shown that giant magnetostriction has a significant effect on the dynamic yield stress of crystals.

scholarly journals A Combined Precipitation, Yield Stress, and Work Hardening Model for Al-Mg-Si Alloys Incorporating the Effects of Strain Rate and Temperature

2018 ◽  
Vol 49 (8) ◽  
pp. 3592-3609 ◽  
Author(s):  
Ole Runar Myhr ◽  
Odd Sture Hopperstad ◽  
Tore Børvik
Keyword(s):  
Strain Rate ◽  
Yield Stress ◽  
Work Hardening ◽  
Hardening Model ◽  
Work Hardening Model

Characterization of yield stress surface and strain-rate potential for tubular materials using multiaxial tube expansion test method

2020 ◽  
Vol 133 ◽  
pp. 102838
Author(s):  
Sobhan Alah Nazari Tiji ◽  
Taejoon Park ◽  
Amir Asgharzadeh ◽  
Hyunki Kim ◽  
Madhura Athale ◽  
...  
Keyword(s):  
Strain Rate ◽  
Yield Stress ◽  
Test Method ◽  
Expansion Test ◽  
Stress Surface ◽  
Tube Expansion

Significance of Imaginary Initial Strain Rate and Strain Rate Acceleration Factor in a Constant Load Creep

1995 ◽  
Vol 81 (8) ◽  
pp. 862-867 ◽  
Author(s):  
Takao ENDO ◽  
Jianzhong SHI ◽  
Fujimitsu MASUYAMA
Keyword(s):  
Strain Rate ◽  
Initial Strain Rate ◽  
Constant Load ◽  
Acceleration Factor ◽  
Initial Strain ◽  
Rate Acceleration ◽  
Imaginary Initial Strain Rate

scholarly journals Exact statistical properties of the Burgers equation

2000 ◽  
Vol 417 ◽  
pp. 323-349 ◽  
Author(s):  
L. FRACHEBOURG ◽  
Ph. A. MARTIN
Keyword(s):  
White Noise ◽  
Large Distance ◽  
Burgers Equation ◽  
Higher Order ◽  
Statistical Properties ◽  
Inviscid Limit ◽  
Initial Condition ◽  
Spatial Correlations ◽  
One Dimensional ◽  
The One

The one-dimensional Burgers equation in the inviscid limit with white noise initial condition is revisited. The one- and two-point distributions of the Burgers field as well as the related distributions of shocks are obtained in closed analytical forms. In particular, the large distance behaviour of spatial correlations of the field is determined. Since higher-order distributions factorize in terms of the one- and two- point functions, our analysis provides an explicit and complete statistical description of this problem.

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