A viscoelasticity model for polymers: Time, temperature, and hydrostatic pressure dependent Young's modulus and Poisson's ratio across transition temperatures and …

L Yang, L Yang, RL Lowe - Mechanics of Materials, 2021 - Elsevier
Capturing and fundamentally understanding the variation of a polymer's mechanical
properties with time, temperature, and hydrostatic pressure is essential for accurate …

[HTML][HTML] Numerical verification of energy release rate and J-Integral in large strain formulation

T Long, L Wang, CD Kan, JD Lee - Forces in Mechanics, 2023 - Elsevier
The fracture criterion is a critical topic in fracture mechanics. However, the equality of J-
Integral (J) and energy release rate (G) has not been numerically verified under large strain …

Revisit initiation of localized plastic deformation: Shear band & necking

L Yang, L Yang - Extreme Mechanics Letters, 2020 - Elsevier
Localizations of plastic deformation such as shear band and necking have been
investigated during past several decades. From experimental observations, microstructural …

An Improved Taylor Approximation of the Arruda-Boyce Model for Finite-Element Implementation

L Yang, T Long, L Yang - Available at SSRN 4680345, 2023 - papers.ssrn.com
This article reports an improved Taylor approximation of the Arruda-Boyce model. Aided by
recurrence relationships for the inverse Langevin function, this new expansion can be used …

On Polymer Statistical Mechanics: From Gaussian Distribution to Maxwell-Boltzmann Distribution to Fermi-Dirac Distribution

L Yang - arXiv preprint arXiv:2308.11482, 2023 - arxiv.org
Macroscopic mechanical properties of polymers are determined by their microscopic
molecular chain distribution. Due to randomness of these molecular chains, probability …

Digest Ultrasonic Welding I: Localized Heating and Fuse Bonding

L Yang, L Yang - arXiv preprint arXiv:2301.05810, 2023 - arxiv.org
This paper reports a new insight on the principle of ultrasonic welding process. Physics of
ultrasonic welding process is considered to be an inverse process of shear band formation …

An Anisotropic Constitutive Relationship by a Series of 8 Chain Models

L Yang, T Long, L Yang - arXiv preprint arXiv:2403.15689, 2024 - arxiv.org
Hyperelastic models have been widely used to model polymers and soft tissues. However,
most hyperelastic models are phenomenological material models. Based on statistical …

Simulation of Wave in Hypo-Elastic-Plastic Solids Modeled by Eulerian Conservation Laws

L Yang, RL Lowe - arXiv preprint arXiv:2303.15456, 2023 - arxiv.org
This paper reports a theoretical and numerical framework to model nonlinear waves in
elastic-plastic solids. Formulated in the Eulerian frame, the governing equations employed …

[PDF][PDF] Forces in Mechanics

T Long, L Wang, CD Kan, JD Lee - researchgate.net
The fracture criterion is a critical topic in fracture mechanics. However, the equality of J-
Integral (J) and energy release rate (G) has not been numerically verified under large strain …

The effect of sports-metrics volleyball training on the landing error scoring system in female volleyball players

S Shahrjerdi, H Mohammadi, S Amiri - Sport Sciences and Health …, 2021 - sshr.ut.ac.ir
Background: Excessive repetitions of the landing and jumping task are a key risk factor for
lower extremity injury (specially ACL) in female volleyball players. Aim: this study …