Fully funded doctoral course position is available for Computational Multi-Physics Coupled Analysis Laboratory from iART Program of Kyushu Institute of Technology, Japan. One successful candidate will carry out his research in the area of biomechanics and biomimetics using computational mechanics.
Fully funded doctoral course position is available for Computational Multi-Physics Coupled Analysis Laboratory from iART Program of Kyushu Institute of Technology, Japan. One successful candidate will carry out his research in the area of biomechanics and biomimetics using computational mechanics.
Fully funded doctoral course position is available for Computational Multi-Physics Coupled Analysis Laboratory from iART Program of Kyushu Institute of Technology, Japan. One successful candidate will carry out his research in the area of biomechanics and biomimetics using computational mechanics.
Universal displacements are those displacements that can be maintained for any member of a specific class of linear elastic materials in the absence of body forces, solely by applying boundary tractions. For linear hyperelastic (Green elastic) solids, it is known that the space of universal displacements explicitly depends on the symmetry group of the material, and moreover, the larger the symmetry group the larger the set of universal displacements.
The 8th World Congress on Integrated Computational Materials Engineering (ICME 2025) will be held in Anaheim Marriot • Anaheim, California, USA June 15–19, 2025
Submit your abstracts to ICME 2025 by October 30!
www.tms.org/ICME2025
Gabriel Dante Lima-Chavez, Amit Acharya, Manas V. Upadhyay
A geometrically nonlinear theory for field dislocation thermomechanics based entirely on measurable state variables is proposed. Instead of starting from an ordering-dependent multiplicative decomposition of the total deformation gradient tensor, the additive decomposition of the velocity gradient into elastic, plastic and thermal distortion rates is obtained as a natural consequence of the conservation of the Burgers vector. Based on this equation, the theory consistently captures the contribution of transient heterogeneous temperature fields on the evolution of the (polar) dislocation density. The governing equations of the model are obtained from the conservation of Burgers vector, mass, linear and angular momenta, and the First Law. The Second Law is used to deduce the thermodynamical driving forces for dislocation velocity. An evolution equation for temperature is obtained from the First Law and the Helmholtz free energy density, which is taken as a function of the following measurable quantities: elastic distortion, temperature and the dislocation density (the theory allows prescribing additional measurable quantities as internal state variables if needed). Furthermore, the theory allows one to compute the Taylor-Quinney factor, which is material and strain rate dependent. Accounting for the polar dislocation density as a state variable in the Helmholtz free energy of the system allows for temperature solutions in the form of dispersive waves with finite propagation speed, despite using Fourier’s law of heat conduction as the constitutive assumption for the heat flux vector.
In this paper, we formulate a continuum theory of solidification within the context of finite-strain coupled thermoelasticity. We aim to fill a gap in the existing literature, as the existing studies on solidification typically decouple the thermal problem (the classical Stefan's problem) from the elasticity problem, and often limit themselves to linear elasticity with small strains.
There are several doctoral and postdoctoral openings in the field of civil and ocean engineering at Tsinghua University. The project will employ a multiscale approach combining theoretical modelling, numerical simulations, and structural/material investigations. Candidates having a background in materials, structures, AI-aided computing, and design are encouraged to apply. Successful applicants will join the group of Prof. Yutao Guo at the Shenzhen International Graduate School of Tsinghua University in Shenzhen, China. Find the details in the attached.
