1 citations · 1 across the 7 of their papers we have counts for
7 papers
On extracting momentum from supports: the bullet in the beam problem
Xiaoyu Zheng, Tianyi Guo, Peter Palffy-Muhoray
To gain insights into momentum transfer from the supporting environment, we consider the simple problem of a bullet, fired from below, into a wooden beam resting on two supports. T…
Whip dynamics in a freely falling chain
Tianyi Guo, Xiaoyu Zheng, Peter Palffy-Muhoray
In this work, we examine the whip dynamics in a freely falling chain. We consider an inextensible chain with free ends in the presence of gravity hanging from a fixed pulley. If th…
An elastically stabilized spherical invagination
Xiaoyu Zheng, Tianyi Guo, Peter Palffy-Muhoray
Invaginations are partial enclosures formed by surfaces. Typically formed by biological membranes; they abound in nature. In this paper, we consider fundamentally different structu…
The Freedericksz transition in a spatially varying magnetic field
Tianyi Guo, Xiaoyu Zheng, Peter Palffy-Muhoray
Much is known about the Freedericksz transition induced by uniform electric and magnetic fields in nematic liquid crystals. Here we study the effects of a spatially varying field o…
Impedance Matching in an Elastic Actuator
Tianyi Guo, Xiaoyu Zheng, Peter Palffy-Muhoray
We optimize the performance of an elastic actuator consisting of an active core in a host which performs mechanical work on a load. The system, initially with localized elastic ene…
Wavelength selection in a buckling garden hose
Tianyi Guo, Xiaoyu Zheng, Peter Palffy-Muhoray
We consider sinusoidal undulations which appear on certain garden hoses under normal use. We propose an explanation and provide a model for this phenomenon, and make a connection w…
Surface Anchoring Energy of Cholesteric Liquid Crystals
Tianyi Guo, Xiaoyu Zheng, Peter Palffy-Muhoray
In this paper, we propose a suitable surface energy expression for cholesteric liquid crystals. We show that there exists a symmetry allowed term for chiral nematics that doesn't a…