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Abstract

Description:

A two-year/three-year fellowship named as the Hundred-Talent Postdoc Fellowship is available at Beihang University. Beihang University, also known as Beijing University of Aeronautics and Astronautics (BUAA), has always been ranked No. 1 in Aerospace Engineering among all the universities in China. Our research group led by Professor  Leiting Dong is seeking talented and motivated candidates to work on the development of state-of-the-art computational mechanics methods and their applications on the analysis and design of complex engineering structures.

Motivated by roughness-induced adhesion enhancement (toughening and strengthening) in low modulus materials, we study the detachment of a sphere from a substrate in the presence of both viscoelastic dissipation at the contact edge, and roughness in the form of a single axisymmetric waviness. We show that the roughness-induced enhancement found by Guduru and coworkers for the elastic case (i.e. at very small detachment speeds) tends to disappear with increasing speeds, where the viscoelastic effect dominates and the problem approaches that of a smooth sphere.

A fully supported Ph.D. position is open immediately in Advanced Hierarchical Materials by Design Lab at the University of Alabama on multiscale modeling of materials and processes. The research goal of this project is to model the additive manufacturing process and develop new alloys for additive manufacturing. During this projects, the candidate will have the opportunity to collaborate with NASA research centers, national labs, and different universities across the nation.