A New Temperature-Dependent Equation of State for Inert, Reactive and Composite Materials

2002 ◽  
Author(s):  
O. Heuzé
Keyword(s):  
Composite Materials ◽  
Equation Of State ◽  
Temperature Dependent

scholarly journals A General Temperature-Dependent Stress–Strain Constitutive Model for Polymer-Bonded Composite Materials

Polymers ◽  
2021 ◽  
Vol 13 (9) ◽  
pp. 1393
Author(s):  
Xiaochang Duan ◽  
Hongwei Yuan ◽  
Wei Tang ◽  
Jingjing He ◽  
Xuefei Guan
Keyword(s):  
Composite Materials ◽  
Constitutive Model ◽  
Model Parameters ◽  
Temperature Dependent ◽  
Stress Strain ◽  
Proposed Model ◽  
Single Temperature ◽  
Testing Data ◽  
Bonded Composite ◽  
Tension And Compression

This study develops a general temperature-dependent stress–strain constitutive model for polymer-bonded composite materials, allowing for the prediction of deformation behaviors under tension and compression in the testing temperature range. Laboratory testing of the material specimens in uniaxial tension and compression at multiple temperatures ranging from −40 ∘C to 75 ∘C is performed. The testing data reveal that the stress–strain response can be divided into two general regimes, namely, a short elastic part followed by the plastic part; therefore, the Ramberg–Osgood relationship is proposed to build the stress–strain constitutive model at a single temperature. By correlating the model parameters with the corresponding temperature using a response surface, a general temperature-dependent stress–strain constitutive model is established. The effectiveness and accuracy of the proposed model are validated using several independent sets of testing data and third-party data. The performance of the proposed model is compared with an existing reference model. The validation and comparison results show that the proposed model has a lower number of parameters and yields smaller relative errors. The proposed constitutive model is further implemented as a user material routine in a finite element package. A simple structural example using the developed user material is presented and its accuracy is verified.

A four parameter cubic equation of state with temperature dependent covolume parameter

2019 ◽  
Vol 27 (5) ◽  
pp. 1132-1148 ◽  
Author(s):  
Pradnya N.P. Ghoderao ◽  
Vishwanath H. Dalvi ◽  
Mohan Narayan
Keyword(s):  
Equation Of State ◽  
Temperature Dependent ◽  
Cubic Equation Of State ◽  
Cubic Equation

A Simulation of the Liquid Shock and Cavitation Based on a Multi-Equation Model

2016 ◽  
Vol 13 (04) ◽  
pp. 1641010
Author(s):  
Yang-Yao Niu
Keyword(s):  
Equation Of State ◽  
Blunt Body ◽  
Equation Model ◽  
Test Cases ◽  
Riemann Solver ◽  
Temperature Dependent ◽  
Two Phase ◽  
One Dimensional ◽  
Condensation Shock ◽  
Multi Phase

In this paper, an unsteady preconditioning formulation for multi-phase flows with arbitrary equation of state based on the approximated Riemann solver is developed for multi-phase flows at all speed. This paper considers a homogeneous two-phase multi-equation mixture model with the assumption of kinematics and thermodynamics equilibriums. The thermodynamics behaviors of liquid phase, vapor phase and their phase transitional process are described by a temperature-dependent hybrid equation of state. Benchmark test cases, including one-dimensional (1D) condensation shock in the cavitated nozzle and two-dimensional (2D) cavitated blunt body problem, demonstrate accurate capturing of interfaces, shock waves and cavitation zones.

Temperature dependent radiative properties of semi-transparent fiberglass-epoxy composite materials from 20 °C to 200 °C

2022 ◽  
Vol 184 ◽  
pp. 122319
Author(s):  
Florent Retailleau ◽  
Vadim Allheily ◽  
Lionel Merlat ◽  
Jean-François Henry ◽  
Jaona Harifidy Randrianalisoa
Keyword(s):  
Composite Materials ◽  
Epoxy Composite ◽  
Radiative Properties ◽  
Temperature Dependent

scholarly journals PRODUCTION OF THERMAL PHOTONS IN A SIMPLE CHIRAL-HYDRODYNAMIC MODEL

2012 ◽  
Vol 18 ◽  
pp. 216-220
Author(s):  
J. PERALTA-RAMOS ◽  
M. S. NAKWACKI
Keyword(s):  
Boltzmann Equation ◽  
Equation Of State ◽  
Shear Viscosity ◽  
Hydrodynamic Model ◽  
Order Theory ◽  
Second Order ◽  
Temperature Dependent ◽  
Dissipative Effects ◽  
Linearized Boltzmann Equation ◽  
Self Consistent

We use a self-consistent chiral-hydrodynamic formalism which combines the linear σ model with second-order hydrodynamics in 2 + 1 dimensions to compute the spectrum of thermal photons produced in Au+Au collisions at [Formula: see text]. The temperature-dependent shear viscosity of the model, η, is calculated from the linearized Boltzmann equation. We compare the results obtained in the chiral-hydrodynamic model to those obtained in the second-order theory with a Lattice QCD equation of state and a temperature-independent value of η/s. We find that the thermal photon production is significantly larger in the latter model due to a slower evolution and larger dissipative effects.

Optimising an Intercooled Compressor for an Ideal Gas Model

2003 ◽  
Vol 31 (3) ◽  
pp. 189-200 ◽  
Author(s):  
Jeffery D. Lewins
Keyword(s):  
Equation Of State ◽  
Specific Heat ◽  
Ideal Gas ◽  
Heat Capacities ◽  
Perfect Gas ◽  
Temperature Dependent ◽  
Specific Heat Capacities ◽  
Ideal Gas Model

Many of the conventional results obtained when optimising the performance of an intercooler during compression using a perfect gas model can be obtained when the restrictions of the model are relaxed to an ideal gas. That is, we now have temperature-dependent specific heat capacities but retain the equation of state pV = RT. This note illustrates the theme.

Temperature-dependent equation of state of condensed matter

1997 ◽  
Vol 9 (14) ◽  
pp. 2987-2998 ◽  
Author(s):  
Piyush Kuchhal ◽  
Ravindra Kumar ◽  
Narsingh Dass
Keyword(s):  
Equation Of State ◽  
Condensed Matter ◽  
Temperature Dependent
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