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Variational and Potential Methods for a Class of Linear Hyperbolic Evolutionary Processes / Edition 1

Current price: $54.99
Variational and Potential Methods for a Class of Linear Hyperbolic Evolutionary Processes / Edition 1
Variational and Potential Methods for a Class of Linear Hyperbolic Evolutionary Processes / Edition 1

Barnes and Noble

Variational and Potential Methods for a Class of Linear Hyperbolic Evolutionary Processes / Edition 1

Current price: $54.99

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Variational and boundary integral equation techniques are two of the most useful methods for solving time-dependent problems described by systems of equations of the form 2— u = Au, 2—t 2 where u = u(x,t) is a vector-valued function, x is a point in a domain inR or 3 R,and A is a linear elliptic differential operator. To facilitate a better und- standing of these two types of methods, below we propose to illustrate their mechanisms in action on a specific mathematical model rather than in a more impersonal abstract setting. For this purpose, we have chosen the hyperbolic system of partial differential equations governing the nonstationary bending of elastic plates with transverse shear deformation. The reason for our choice is twofold. On the one hand, in a certain sense this is a “hybrid” system, c- sisting of three equations for three unknown functions in only two independent variables, which makes it more unusual—and thereby more interesting to the analyst—than other systems arising in solid mechanics. On the other hand, this particular plate model has received very little attention compared to the so-called classical one, based on Kirchho?’s simplifying hypotheses, although, as acknowledged by practitioners, it represents a substantial refinement of the latter and therefore needs a rigorous discussion of the existence, uniqueness, and continuous dependence of its solution on the data before any construction of numerical approximation algorithms can be contemplated.

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