On Tuesday 24th October at 3:00 pm (Italian time) Samuel Forest will offer the seminar “Strain gradient plasticity based on saturating internal variables” at the Department of Civil, Environmental, Architectural Engineering and Mathematics of the University of Brescia (Italy). Here attached please find the abstract of the seminar.
Anyone may directly join online through Google Meet at
"S15: Advanced modelling techniques: Higher-order continua" organised by Samuel Forest (Mines ParisTech CNRS) and Lorenzo Bardella (University of Brescia) http://emmc19.org/symposium-s15.html
Abstract submission deadline: December 22nd, 2023, http://emmc19.org/submissions.html
Abhishek Arora, Rajat Arora, Amit Acharya
Micromechanics-based Nonlocal Continuum Models organised by Samuel Forest (Mines ParisTech CNRS) and Lorenzo Bardella (University of Brescia) https://www.esmc2022.org/ms-1-2
Abstract submission deadline: November 19th, 2021, https://www.esmc2022.org/abstract
I hope some of you will find this work interesting. We present a new Weibull framework for cleavage fracture that incorporates strain gradient plasticity and can estimate the three parameters of Weibull-type models without any prior assumptions. A post-print is available at www.empaneda.com
Gradient-enhanced statistical analysis of cleavage fracture
Emilio Martínez-Pañeda, Sandra Fuentes-Alonso, CovadongaBetegón
European Journal of Mechanics - A/Solids 77, 103785 (2019)
I hope some of you may find this work interesting. We show, analytically and numerically, that strain gradient plasticity predicts the existence of an inner elastic field adjacent to the crack tip, reminiscent of a dislocation-free zone. The fact that elastic strains dominate plastic strains near the crack tip implies a paradigm-shift with respect to previous crack tip asymptotic studies in plasticity and gradient plasticity, which neglect elastic strains.
Emilio Martínez-Pañeda, Norman A. Fleck
I hope some of you will find our recent paper in the Journal of the Mechanics and Physics of Solids interesting. The Abaqus user element (UEL) subroutine developed to implement strain gradient plasticity theories with energetic and dissipative higher order stresses (Gudmundson 2004, Fleck and Willis 2009) can be downloaded from www.empaneda.com/codes
The role of plastic strain gradients in the crack growth resistance of metals
Emilio Martínez-Pañeda, Vikram S. Deshpande, Christian F. Niordson, Norman A. Fleck
I hope some of you may find this work interesting:
Size effects in elastic-plastic functionally graded materials
Tittu V. Mathew, Sundararajan Natarajan, Emilio Martínez-Pañeda
Composite Structures, 204, pp. 43-51 (2018)
https://www.sciencedirect.com/science/article/pii/S0263822318313928
I hope some of you find this work interesting, the code with the control algorithm (Segurado and Llorca, 2004) to avoid convergence problems in cohesive zone model analyses of crack propagation can be downloaded from empaneda.com/codes (documentation and Abaqus input files are provided).
Non-local plasticity effects on notch fracture mechanics
Emilio Martínez-Pañeda, Susana del Busto, Covadonga Betegón
Theoretical and Applied Fracture Mechanics (2017)
