Dear Colleagues,
We invite you to submit your relevant work to a mini-symposium on “Damage And Thermo-Chemo-Mechanical Coupling In Polymers” (full description below) at the 2020 Society of Engineering Science. SES 2020 will be held at the University of Minnesota in Minneapolis, September 28-30th.
We also like to announce that Prof. Ellen Arruda will give the keynote of this symposium.
Theory of physical aging from polymer science is, for the first time, introduced to understand ACL injury and its prevention. By analogy to physical aging of amorphous polymer materials, we think physical aging of two bundles of ACL will largely increase risk of ACL injury. Besides, physical aging will also build a heterogeneous stress and strain in ACL due to its natural anatomic structure, which is a large risk for athletes. The specific designed prevention programs for ACL injury such as plyometrics, strengthening and other neuromuscular training exercises [1] are believed to erase physical aging of ACL. ACL with less physical aging is less likely to get injured in sport activities. In this article, a virtual physical aging simulation is built to validate current hypothesis. Erasing physical aging of ACL may provide an accurate and quantitative way to prevent ACL injury.
Adhesive contact of a rigid flat surface with an elastic substrate having Weierstrass surface profile is numerically analyzed using the finite element method. In this work, we investigate the relationship between load and contact area spanning the limits of non-adhesive normal contact to adhesive contact for various substrate material properties, surface energy and roughness parameters. In the limit of non-adhesive normal contact, our results are consistent with published work.
By Alexa S. Kuenstler, Yuzhen Chen, Phuong Bui, Hyunki Kim, Antonio DeSimone, Lihua Jin, Ryan C. Hayward
Arc welding based additive manufacturing or WAAM techniques are attracting interest from the manufacturing industry because of their potential to fabricate large metal components with low cost and short production lead time. This process exists alongside other high deposition rate metal AM technologies such as powder and wire based DED. While these use either laser or an electron beam as energy source to melt a metal powder or wire, WAAM technologies melt metal wire using an electric arc.
Over the last years, UGent-MMS has developed the stand-alone BladeMesher software for generating finite element models of large wind turbine blades. The software reads in the material data and airfoil data of the wind turbine blade, and automatically constructs the geometry and finite element mesh for the blade. In a next step, the nodal and element information of the finite element mesh is written out to an input file for a commercial finite element solver (Abaqus in this case).
Thermoplastic composites are gaining more and more interest in automotive, aerospace and sports applications, because of the short cycle times and recycling possibilities. Besides short fibre-reinforced thermoplastics, also continuous fibre-reinforced thermoplastic composites are being considered for load-carrying structures. However, their behaviour during manufacturing and during in-service use is very different from the traditional thermoset composites (typically epoxy-based). The mechanical properties of thermoplastic composites are much more sensitive to temperature and loading rate.
Please see the links in Chinese
Associate professor: http://acem.scu.edu.cn/newsshow.php?cid=88&id=12762
http://acem.scu.edu.cn/newsshow.php?cid=88&id=12732
Postdoc: http://acem.scu.edu.cn/newsshow.php?cid=88&id=12733
Walker Department of Mechanical Engineering
Cockrell School of Engineering
204 E. Dean Keeton Street, C2200 • Austin, Texas 78712 • 512-232-5998 • Fax 512-471-8727
Postdoc Position in “Graphene-Based Composites: Experimental”
The Laboratory for Soft Machines & Electronics (www.caogroup.org) at the MSU has one postdoc associate opening in the areas of soft materials and machines. The research work is expected to be highly multi-disciplinary, and the specific topics includes: Smart materials and structures, Soft robotics, Artificial skins; Energy harvesters, Wearable Electronics, Machine Learning, etc. This position is available immediately.
