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Deformation and fracture of 3D printed disordered lattice materials: Experiments and modeling

Dear all,

Our group at Delft University of Technology has recently published a study on Deformation and Fracture of 3D printed disordered lattice materials. In the study, we used experiments and numerical simulations to study these effects. The full paper can be accessed at: https://www.researchgate.net/publication/329146684_Deformation_and_fract...

Regards,

Branko

2019 Thomas K. Caughey Dynamics Award – Professor Anil K. Bajaj and Professor Steven W. Shaw

The Executive Committee of the ASME Applied Mechanics Division is pleased to announce and congratulate both Professor Anil K. Bajaj, William E. and Florence E. Perry Head of Mechanical Engineering and Alpha P. Jamison Professor of Mechanical Engineering, Purdue University, and Professor Steven W.

2019 Ted Belytschko Applied Mechanics Award – Professor Somnath Ghosh

The Executive Committee of the ASME Applied Mechanics Division is pleased to announce and congratulate Professor Somnath Ghosh, Michael G. Callas Chair Professor of Civil Engineering, Mechanical Engineering and Materials Science and Engineering, Johns Hopkins University, as recipient of the 2019 Ted Belytschko Applied Mechanics Division Award.

2019 Thomas J.R. Hughes Young Investigator Award - Professor Yihui Zhang

The Executive Committee of the ASME Applied Mechanics Division is pleased to announce and congratulate Professor Yihui Zhang, Associate Professor of Engineering Mechanics, Tsinghua University, as the recipient of the 2019 Thomas J. R.

Lectureship (tenure-track Assistant Professor) at the Cambridge University - Engineering Department in Biomechanics and Mechanobiology

Applications are invited for a University Lectureship (equivalent to a tenure-track Assistant Professor in the US system) in Biomechanics and Mechanobiology. The successful candidate will join the Mechanics, Materials and Design Division to add to its expertise in Bioengineering. Applicants should have earned a Ph.D. in Engineering or a related discipline and ideally with post-doctoral experience.

vikastomar1's picture

Open Post Doc Positions-Purdue Gilbreth Fellowships

I wanted to bring to attention open Purdue Gilbreth Postdoctoral Fellowship Positions.

https://engineering.purdue.edu/Engr/Research/GilbrethFellowships

In particular I am soliciting calls from good candidates in the following area: (please feel free to contact me for a possibility. prior communication is encouraged.)

Master or Phd position in Topology Optimization @ York University, Toronto, Canada

Vacancies exist for high calibre one master or one PhD student to join the Innovative Design and Engineering Analysis Laboratory at York University, starting immediately.
The position’s primary area of research will focus on shape and topology optimization
 

Requirement:
- Strong background in numerical simulations, finite element analysis, computational solid mechanics
- Excellent programming skills and experience with high performance computing
- Proficiency in English, good written and verbal communication skills

 

Yonggang Huang's picture

Professor Ahmed Elbanna to receive the 2019 Journal of Applied Mechanics Award

Professor Ahmed Elbanna from University of Illinois at Urbana-Champaign has been selected to receive the 2019 Journal of Applied Mechanics Award for the paper "On the role of the plaque porous structure in mussel adhesion: implications for adhesion control using bulk patterning", Journal of Applied Mechanics, v 85, #121003, 2018.  The paper is attached.

Shuze Zhu's picture

Nanomanufacturing of graphene nanosheets through nano-hole opening and closing

Materials Today, in press, 2018, https://doi.org/10.1016/j.mattod.2018.09.001

Yanan Chen, Yilin Wang, Shuze Zhu, Kun Fu, Xiaogang Han, Yanbin Wang, Bin Zhao, Tian Li , Boyang Liu , Yiju Li , Jiaqi Dai , Hua Xie , Teng Li , John W. Connell , Yi Lin, Liangbing Hu

Announcing the 2019 Award Winners from the Society of Engineering Science (SES)

The Society of Engineering Science (SES) oversees several awards and honors to members and eminent scholars of the field. Below are the 2019 distinguished award winners!

 

Cemal Eringen Medal

Prof. Evelyn Hu, Harvard University

Citation: "For seminal contributions at the intersection of semiconductor electronics and photonics, and leadership in nanoscale science and engineering."

 

Arash_Yavari's picture

Faculty Opening at GA Tech: Space Habitat Systems

The Daniel Guggenheim School of Aerospace Engineering and the School of Civil and Environmental Engineering at the Georgia Institute of Technology are seeking applications for a tenure-track faculty position in the area of space habitat systems. The position is expected to be a joint appointment between both schools. Multidisciplinary collaboration with related research groups and colleges at Georgia Tech is highly encouraged.

Fan Xu's picture

A modeling and resolution framework for wrinkling in hyperelastic sheets at finite membrane strain

Wrinkles commonly occur in uniaxially stretched rectangular hyperelastic membranes with clamped-clamped boundaries, and can vanish upon excess stretching. Here we develop a modeling and resolution framework to solve this complex instability problem with highly geometric and material nonlinearities. We extend the nonlinear Foppl-von Karman thin plate model to finite membrane strain regime for various compressible and incompressible hyperelastic materials.

sairajatm's picture

Dislocation pattern formation in finite deformation crystal plasticity

Rajat Arora        Amit Acharya

Stressed dislocation pattern formation in crystal plasticity at finite deformation is demonstrated for the first time. Size effects are also demonstrated within the same mathematical model. The model involves two extra material parameters beyond the requirements of standard classical crystal plasticity theory. The dislocation microstructures shown are decoupled from deformation microstructures, and emerge without any consideration of latent hardening or constitutive assumptions related to cross-slip. Crystal orientation effects on the pattern formation and mechanical response are also demonstrated. The manifest irrelevance of the necessity of a multiplicative decomposition of the deformation gradient, a plastic distortion tensor, and the choice of a reference configuration in our model to describe the micromechanics of plasticity as it arises from the existence and motion of dislocations is worthy of note.

Amit Acharya's picture

On the Structure of Linear Dislocation Field Theory

Amit Acharya          Robin J. Knops         Jeyabal Sivaloganathan

Uniqueness of solutions in the linear theory of non-singular dislocations, studied as a special case of plasticity theory, is examined. The status of the classical, singular Volterra dislocation problem as a limit of plasticity problems is illustrated by a specific example that clarifies the use of the plasticity formulation in the study of classical dislocation theory. Stationary, quasi-static, and dynamical problems for continuous dislocation distributions are investigated subject not only to standard boundary and initial conditions, but also to prescribed dislocation density. In particular, the dislocation density field can represent a single dislocation line.

It is only in the static and quasi-static traction boundary value problems that such data are sufficient for the unique determination of stress. In other quasi-static boundary value problems and problems involving moving dislocations, the plastic and elastic distortion tensors, total displacement, and stress are in general non-unique for specified dislocation density. The conclusions are confirmed by the example of a single screw dislocation.

Zheng Jia's picture

Will Nemo's balloon burst or not?

Nemo lives in the ocean near the Great Barrier Reef. One day, he bought a hydrogel balloon which is inflated by an inner pressure p. Will the balloon burst eventually or stay safe?

Society of Engineering Science Seeks Nomination for Board Members

Dear members of the Society of Engineering Science (SES):

SES Board of Directors aims to fill two vacancies on the board. We are seeking nominations for these two positions. Any SES member can self-nominate or nominate another SES member. At this point, just the name and affiliation of the nominee are needed. Please submit the nominations to saif@illinois.edu by Nov 27.

 

Best regards

 

okeles's picture

Faculty Position Materials Engineering San Jose State University

We are intersted in candidates with expertise in mechanics of materials, polymers, additive manufacturing, etc.  Details can be found at: 

https://engineering.academickeys.com/job/18ngsiqf/Assistant_Professor_Te...

Rong Long's picture

Department Chair Opening, Mechanical Engineering, University of Colorado Boulder

Dear Colleagues:  Our Department of Mechanical Engineering at CU-Boulder is seeking a dynamic and innovative leader to serve as the new Chair. We are undergoing a period of unprecedented faculty growth and expansion to match an ambitious vision of research and teaching excellence.

Yoonho Kim's picture

Untethered soft machines and robots enabled by hard-magnetic soft materials

We introduce our recent works on advanced fabrication and mechanics of hard-magnetic soft materials towards the development of untethered soft machines and robots actuated and controlled by magnetic fields. 

- Abstract

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