Skip to main content

Blog posts

Faculty Position (Open Rank) in Department of Civil Engineering and Engineering Mechanics at Columbia University

Submitted by WaiChing Sun on

COLUMBIA UNIVERSITY

School of Engineering and Applied Science

Faculty Position in Civil Engineering and Engineering Mechanics

The Department of Civil Engineering and Engineering Mechanics at Columbia University in the City of New York invites applications for a tenured or tenure-track faculty position. Appointments at the assistant professor, associate professor and full professor levels will be considered. 

Electro-mechanical coupling bifurcation and bulging propagation in a cylindrical dielectric elastomer tube

Submitted by tongqing.lu on

This paper explores the critical and post-bulging bifurcation of a cylindrical dielectric elastomer (DE) tube undergoing finite deformation under electro-mechanical coupling loading. Explicit expressions for the critical conditions of electro-mechanical bifurcation are derived by using a simplified mathematical method. The post-bifurcation path is comprehensively investigated by specifying the material model as ideal dielectric elastomer.

why the back stress is independent of stress

Submitted by Huadong Yong on

alpha_ij is the back stress. During the derivation of the consistent condition (please see attachment),

d(sigma_ij-alpha_ij)/d (alpha_ij)=-1.

The back stress is related to the plastic strain, why it is independent of the stress.

Thank you.

 

ref: http://www.solid.iei.liu.se/Education/TMHL55/TMHL55_lp1_2010/lecture_notes/plasticity_flow_rule_kinematic_hardening.pdf

 

Doctorate position in Mechanical Engineering - Lamar University, Texas, USA

Submitted by ali_beheshti1 on

2 Doctorate of Engineering (DE) positions are available for Summer/Fall 2016 in Mechanical Engineering. The applicants are required to have master degree. The positions are directed by Multiscale Contact Mechanics and Tribology Laboratory and Optoelectronic Laboratory at Lamar University, Beaumont, TX, USA. Interested applicants may find more information at http://engineering.lamar.edu/mechanical/ and are encouraged to apply ASAP. 

Ph.D. positions in the Max Planck-ETH Center for Learning Systems

Submitted by mortezaamjadi on

The Center offers a unique fellowship program, where PhD students are co-supervised by one advisor from ETH Zurich and one from the MPI for Intelligent Systems in Tübingen and Stuttgart. PhD students are expected to take advantage of the opportunities offered by both organizations and to actively seek cross-group collaborations. All PhD fellows will register as graduate students at ETH Zurich and - upon successful completion of their PhD project - be granted a doctoral degree by ETH Zurich.