#Plasticity

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 

https://meet.google.com/rad-ehjg-ker

Cyclic Plasticity of the As-Built EOS Maraging Steel: Preliminary Experimental and Computational Results

https://www.mdpi.com/2076-3417/10/4/1232/htm

Deadline for short abstract submission - February 15, 2020

https://lnkd.in/dQUgfhv

Deadline for manuscript submissions: 30 November 2019. 

Special Issue "Entropy Based Fatigue, Fracture, Failure Prediction and Structural Health Monitoring"

https://www.mdpi.com/journal/entropy/special_issues/fatigue

The ability to transform the crystal structure of metals in the solid-state enables tailoring their physical, mechanical, electrical, thermal, and optical properties in unprecedented ways. We demonstrate a martensitic phase transformation from a face-centered-cubic (fcc) structure to a hexagonal-close-packed (hcp) structure that occurs in nanosecond timescale in initially near-defect-free single-crystal silver (Ag) microcubes impacted at supersonic velocities.

A new PhD position is available immediately in my group in the area of computational atomistic modeling of grain-boundary segregation and plasticity mechanisms in nanocrystalline alloys. Full description available in the attached file. 

Dear colleagues,

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 may find this work interesting. We show that kinematic hardening effects play a significant role in monotonic/static fracture.

Steady-state fracture toughness of elastic-plastic solids: Isotropic versus kinematic hardening

K.J.Juul, E.Martínez-Pañeda, K.L.Nielsen, C.F.Niordson

Engineering Fracture Mechanics, 207, pp. 254-268 (2019)

Volume 207, 15 February 2019, Pages 254-268

ANSYS, Inc. has an immediate job opening in Houston, TX for Application Engineer.  This is a full time position.

The job entails providing advanced technical guidance on various aspects of computational Structural Mechanics to clients in industry.