Σύγκριση μεθόδων

	Ανάλυση Πεπερασμένων Στοιχείων	Θεωρία Γραμμών Διαρροής
Πεδίο	Επιστήμη Υλικών	Πολιτική Μηχανική
Οικογένεια	Process / pipeline	Process / pipeline
Έτος προέλευσης	1943	1943 (doctoral thesis, Danish); 1962 (English translation)
Δημιουργός	Richard Courant	K. W. Johansen
Τύπος	Computational method	Structural analysis method (plasticity-based)
Θεμελιώδης πηγή	Zienkiewicz, O. C., & Taylor, R. L. (1977). The Finite Element Method in Engineering Science. McGraw-Hill.	Johansen, K. W. (1962). Yield-Line Theory. Cement and Concrete Association, London.
Εναλλακτικές ονομασίες	FEA, finite element method	yield-line analysis, yield-line method, Johansen yield-line method, plastic slab analysis
Συναφείς	4	1
Σύνοψη	Finite Element Analysis (FEA) is a numerical technique for obtaining approximate solutions to boundary value problems described by differential equations. Developed systematically by Richard Courant in 1943 and popularized by Clough in the 1960s, FEA divides a complex domain into smaller, simpler elements to solve engineering problems involving stress, strain, heat transfer, and fluid flow. It is the dominant computational method in materials science for predicting material behavior under various loading conditions.	Yield Line Theory is a plastic limit-analysis method used in structural civil engineering to determine the ultimate load-carrying capacity of reinforced concrete slabs. Developed by K. W. Johansen in the 1940s, it assumes that at failure the slab subdivides into rigid regions separated by lines of intense plastic rotation — called yield lines — where the reinforcement has fully yielded. The approach gives the collapse load directly and is widely used in slab design and assessment.