Results 251 to 260 of about 166,135,342 (278)

Dual Variational Principles in Mechanics and Physics

1983
In this article we present some results concerning variational problems in infinite dimension, which arise in different areas of mechanics and physics. The particularity (and common property) of these problems is that they are coercive on a non reflexive function space of the type L1.
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Principles of identification of the physical processes caused by variation of thermodynamic parameters in solids

Journal of Materials Science, 1978
A method is proposed which permits identification of the reversible and irreversible thermodynamic processes occurring in solids as thermodynamic conditions vary, and definition of the contribution of each process to the whole. Theoretical values have been obtained of the ratio of the rates of change of enthalpy and volume as well as the ratio of the ...
Yu. V. Kornyushin, L. N. Larikov
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A variational principle and finite element formulation for multi-physics PLZT ceramics

Mechanics Research Communications, 2011
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Luo, Quantian, Luo, Zhen, Tong, Liyong
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Physical Variational Principle and Governing Equations

2013
In this chapter, the physical variational principle is used to derive the governing equations of the nonlinear and linear electroelastic analyses in piezoelectric and pyroelectric materials. Some kinds of the physical variational principle are given. Applying the migratory variation of electric potential, the general expression of the static electric ...
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Perfect form: variational principles, methods, and applications in elementary physics

Choice Reviews Online, 1997
This short book is concerned with the physical applications of variational principles of the calculus. It is intended for undergraduate students who have taken some introductory lectures on the subject and have been exposed to Lagrangian and Hamiltonian mechanics.
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Variational Principles in Soliton Physics

2023
Laedke, Ernst Wolfgang, Spatschek, Karl H.   +1 more
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Physical Principles of the Displacement Cardiograph Including a New Device Sensitive to Variations in Torso Resistivity

IEEE Transactions on Biomedical Engineering, 1981
The displacement cardiograph (DCG) is a noncontacting device which senses displacements associated with the cardiac cycle through a high-frequency electromagnetic field interaction between a sensing coil and the thorax. The coil is located in the tuning circuit of an oscillator, and perturbations in the oscillation frequency, i.e., frequency quency ...
D L, Wilson, D B, Geselowitz
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A variational inequality principle in solid mechanics and application in physically non‐linear problems

Communications in Applied Numerical Methods, 1990
AbstractA variational inequality principle which is suitable for various constitutive laws of elasto‐plasticity is given in this paper. Then the variational inequality is reduced to a linear complementary problem by using incremental theory and the finite‐element methods.
Sha Desong, Sun Huanchun, Zhang Zhongding, Yin Fuxin   +3 more
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Variational principle of the zig-zag optical lattice model in quantum physics

Modern Physics Letters A
The zig-zag optical lattice model, which plays a major role in quantum physics, is considered in this research. With the aid of the semi-inverse method (SIM), the variational principle (VP) is developed via introducing the trial-Lagrange function (TLF).
Kang-Jia Wang, Kang-Hua Yan, Shuai Li
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Variational Principle in Statistical Physics

Russian Journal of Physical Chemistry A, 2022
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