英和和英

名詞

elastica (plural elasticas)

1. (materials science) A curve that minimizes bending energy; the shape that a thin flexible rod assumes when its endpoints are fixed.
   • 2020 December, Qiang Wang, Hai-Lin Zou, Zi-Chen Deng, “Snap-through of a pinned-clamped elastica with arbitrarily movable support at the clamped end”, in Mechanics Research Communications, Oxford, Oxfordshire: Pergamon, →DOI, →ISSN, →OCLC, page 1:

     This paper studies the snap-through of a pinned-clamped elastica when the support of the clamped end can be moved arbitrarily in plane. The universal snap curve, which describes the critical boundary conditions of the pinned-clamped elasticas, is firstly obtained by determining the saddle-node bifurcation points of the moment-rotation response curves.

2. (biology) Connective tissue that contains elastic fibers, such as that found in blood vessels or skin.
   • 1901, Montréal (Québec). Royal Victoria Hospital, Studies from the Royal Victoria Hospital, Montreal:

     That the elastica interna becomes so modified in its staining properties, so swollen as to exceed ten times the original elastica in thickness, is a fact that cannot be doubted.