## Derivation of the equation of caustics in cartesian coordinates with maple

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Derivation of the equation of caustics in cartesian coordinates with maple
(EN)

Anastasselou, EG
(EN)

Ioakimidis, NI
(EN)

N/A
(EN)

The well-known equation of caustics about crack tips in experimental fracture mechanics is usually expressed in the form of two equations for the Cartesian coordinates (x,y) with a parameter (an appropriate polar angle playing the rǒle of this parameter). Here we derive the equivalent unique equation (but without a parameter) also in Cartesian coordinates with the help of the computer algebra system Maple V by using the available Gröbner-bases algorithm. The obtained Cartesian equation is of the sixth degree and it can be solved in closed form with respect to y yielding an explicit result y =y(x). The same equation is also checked in two special cases, where it gives the same results as the equivalent pair of parametric equations. Analogous, more general results can also be derived. © 1994.
(EN)

journalArticle

Grobner bases algorithm
(EN)

Fracture mechanics
(EN)

Computer software
(EN)

Equivalent unique equation
(EN)

Elasticity
(EN)

Software package - GROBNER
(EN)

Equation of caustics
(EN)

Cartesian equation
(EN)

Cracks
(EN)

Computer systems
(EN)

Algebra
(EN)

Algorithms
(EN)

Maple V computer system
(EN)

Cartesian coordinates
(EN)

Parametric equation
(EN)

Εθνικό Μετσόβιο Πολυτεχνείο
(EL)

National Technical University of Athens
(EN)

Engineering Fracture Mechanics
(EN)

1994

PERGAMON-ELSEVIER SCIENCE LTD
(EN)

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