השוואת שיטות

	Boundary Element Method	Nudged Elastic Band Method
תחום	מדעי החומרים	מדעי החומרים
משפחה	Process / pipeline	Process / pipeline
שנת המקור	1978	1998
הוגה השיטה	Carlos Brebbia	Hannes Jónsson
סוג	Computational method	Optimization method
מקור מכונן	Brebbia, C. A. (1978). The Boundary Element Method for Engineers. Pentech Press.	Jonsson, H., Mills, G., & Jacobsen, K. W. (1998). Nudged elastic band method for finding minimum energy paths of transitions. Classical and Quantum Dynamics in Condensed Phase Simulations. World Scientific.
כינויים	BEM, boundary integral equation method	NEB, elastic band method, transition-path finding
קשורות	3	3
תקציר	The Boundary Element Method (BEM) is a numerical technique that solves partial differential equations by transforming them into boundary integral equations, requiring discretization only of the problem boundary rather than the entire domain. Developed systematically by Carlos Brebbia in the late 1970s, BEM offers significant advantages for infinite or semi-infinite domains, stress concentration analysis, and problems with high aspect ratios. It is especially valuable in geotechnical engineering, acoustics, and materials characterization.	The Nudged Elastic Band (NEB) method is a computational technique for finding minimum-energy transition paths between stable atomic configurations and estimating activation barriers. Developed by Jónsson, Mills, and Jacobsen in 1998, NEB connects initial and final states with a chain of images (configurations) held together by artificial springs, then optimizes the chain to trace a reaction pathway. The climbing-image variant, introduced by Henkelman in 2000, further refines the saddle point. NEB is the standard tool in materials science and chemistry for modeling diffusion, defect formation, and chemical reactions at the atomic scale.