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PhD position at Binghamton University on additive manufacturing

A funded PhD position is available at the department of mechanical engineering in Binghamton University starting from Jan. 1st or Sep. 1st, 2018.  Current topics of interest include: 1) mechanics of additive manufactured materials for biomedical usage; 2) optimal design/fabrication of 3D printed composite structures. The lab is equipped with the state-of-the-art 3D printers like EOS M290, Objet PolyJet, Stratasys FDM, MarkForged, etc. and new machines are upon ordering.

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Remarks on UMAT for plane stress problem

There are a lot of sample UMAT subroutines for plane strain or 3D problems. However, it is difficult to find an example for the plane stress problem online. Even the UMAT manual does not provide enough information. I have tried the UMAT subroutine for the plane stress problem for a while. The following remarks may be useful for collegues who have interest.

1. The stress components σ11, σ22, σ12 should be returned to UMAT.  The other three stress components equal to zero, known as the basic assumption of the plane stress problem.

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Beyond Crystals: Symmetry and Symmetry Breaking of Lattice Materials

The point group symmetry of materials is closely related to their physical properties and quite important for material modelling. However, superlattice materials have more complex symmetry conditions than crystals due to their multilevel structural feature. Thus, a theoretical framework is proposed to characterize and determine the point group symmetry of non-magnetic superlattice materials systematically. A variety of examples are presented to show the symmetry features of superlattice materials in different dimensions and scales.

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Postdoc position opening: modeling 3D-printed materials and structures

                A postdoctoral position is available immediately in the computational mechanics group of Professor Albert To at University of Pittsburgh.  The position is in the modeling of additive manufactured (3D printed) metals and lattice structures and is for one year with possible extension to two years upon satisfactory performance.  The applicant is required to have a doctoral degree in Mechanical Engineering or a closely related field at the time of appointment.  The applicant must also have strong computer skills and be experienced in materials modeling using A

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