Results 71 to 80 of about 5,773 (194)

Measuring viscoelastic properties using compliant systems [PDF]

, 2014
An analysis of a novel indentation model has been implemented to obtain master curves describing the optimal experimental parameters necessary to achieve the highest possible accuracy in the determination of viscoelastic properties of soft materials. The
Andrews, James W., Bowen, James, Cheneler, David   +2 more
core  

Frictional Performance of Concrete Pavement Under Combined Water Accumulation and Cyclic Loading

Advances in Civil Engineering, Volume 2026, Issue 1, 2026.
To explore the evolution mechanism of friction performance in concrete pavement under the coupled effects of water accumulation and cyclic loading, a self‐developed submerged friction testing system is designed for systematically analyzing the influence mechanism of water temperature, cyclic loading, and interface characteristics through an integrated ...
Anhua Xu, Gaozhen Hu, Shiren La, Hossein Nassiraei   +3 more
wiley   +1 more source

Compressive behavior and visco-hyperelastic constitutive of polyurethane elastomer over a wide range of strain rates

Polymer Testing
Polyurethane elastomers (PUEs) will experience different strain rates in different application scenarios. Therefore, it is of great significance to study the mechanical properties of PUE under a wide range of strain rates and establish a constitutive ...
Guanxia Yang, Haijun Wu, Heng Dong, Fenglei Huang   +3 more
doaj   +1 more source

Enhancing Empirical Modal Extraction by Logarithmic Scaling and Normalization of Multi‐Area Signal Measurements

Journal of Applied Mathematics, Volume 2026, Issue 1, 2026.
This paper presents a hierarchical scaling and normalization method to multi‐area signal measurements that dynamically relates both the angular phase domain and its amplitude in empirical analysis of power system oscillations. The proposed approach combines logarithmic relations and the Hilbert transform to derive an effective multi‐area data scaling ...
Pedro Esquivel, Carlos E. Castañeda, Gerardo Romero, Fernando Ornelas-Tellez, Evaristo Noe Reyes, Xiasheng Shi   +5 more
wiley   +1 more source

RELFIT: A program for determining prony series fits to measured relaxation data [PDF]

, 1997
Viscoelastic materials are often characterized in terms of stress relaxation moduli which decay in time. Finite element programs which model viscoelastic materials frequently require that these relaxation functions be defined as an exponential series (i.e., Prony Series) to exploit the numerical advantages of developing recursive equations for ...
openaire   +2 more sources

Viscoelastic Behavior of Polyamide 6–COC Blends: Role of Crystallinity and Frequency‐Domain Modeling

Journal of Applied Polymer Science, Volume 142, Issue 47, December 15, 2025.
Schematic overview of the study: Polyamide 6 (PA6) was blended with amorphous cycloolefin copolymer (COC) via melt blending to systematically tailor crystallinity. The resulting blends were characterized using SEM, DSC, and DMA, enabling construction of frequency‐temperature master curves.
Sameer Kulkarni, Marie‐Christine Reuvers, André Wutzler, Tim Brepols, Stefanie Reese, Michael Johlitz, Alexander Lion   +6 more
wiley   +1 more source

NONLINEAR DYNAMIC ANALYSIS OF THE STEEL-RUBBER VIBRATION ISOLATORS WITH PERFORATION

International Journal for Computational Civil and Structural Engineering
The paper presents a comparative study of nonlinear dynamic analyses of perforated and non-perforated steel–rubber vibration isolators. Particular emphasis is placed on the nonlinear response of rubber, incorporating hyperelasticity (via the Mooney ...
Vladimir Mondrus, Dmitry Sizov
doaj   +1 more source

A class of linear viscoelastic models based on Bessel functions

, 2016
In this paper we investigate a general class of linear viscoelastic models whose creep and relaxation memory functions are expressed in Laplace domain by suitable ratios of modified Bessel functions of contiguous order. In time domain these functions are
Colombaro, Ivano, Giusti, Andrea, Mainardi, Francesco   +2 more
core   +1 more source

Phase‐Field Modeling for Failure Behavior of Polymer Fiber‐Reinforced High‐Performance Concrete Using the Schapery Viscoelastic Model

Proceedings in Applied Mathematics and Mechanics, Volume 25, Issue 4, December 2025.
ABSTRACT Concretes and cement‐based materials are known to exhibit brittle failure, which limits their structural performance after cracking. To overcome this, fiber reinforcement is commonly used to enhance the post‐cracking properties of the material.
Marcos Andre Margalho de Barros, Mangesh Pise, Dominik Brands, Jörg Schröder   +3 more
wiley   +1 more source

Wide‐area damping control in renewable integrated power systems: A review on recent achievements and new challenges

Energy Conversion and Economics, Volume 6, Issue 6, Page 341-358, December 2025.
Abstract Low‐frequency oscillations (LFOs) remain a major obstacle to maintaining stable dynamic performance in power systems with high levels of renewable energy integration. In particular, inter‐area LFOs have emerged as a critical concern in large, interconnected grids.
Linglin Meng, Haixin Wang, Shengyang Lu, Zihao Yang, Zhe Chen, Hassan Bevrani, Sharara Rehimi, Mingchao Xia, Dan Doru Micu, Fausto Pedro García Márquez, Junyou Yang   +10 more
wiley   +1 more source