| 摘要 |
PROBLEM TO BE SOLVED: To provide a system, a method, and a program for cantilever evaluation and capable of evaluating the behaviors of a cantilever in a fluid for designing cantilevers capable of high-accuracy measurements and analyzing the deformations of the cantilevers contained in measurement signals. SOLUTION: A control part 21 of the cantilever evaluating system 20 uses an acquired stream function valueΨ<SB>z</SB>(x, y;t) and vorticityω<SB>z</SB>(x, y;t) and environmental conditions, according to a displacement h(z;t) and the speed [(δ/δt)h(z;t)] (hereδis defined as the symbol for partial differentiation) of a cantilever, to compute a stream function valueΨ<SB>z</SB>(x, y;t+1) and vorticityω<SB>z</SB>(x, y;t+1) in a two-dimensional plane. The control part 21 uses the computed stream function valueΨ<SB>z</SB>(x, y) and the vorticityω<SB>z</SB>(x, y), to compute the fluid drag of the cantilever. The control part 21 substitute the computed fluid drag into a formula for the computation of displacements and performs computation processing on a displacement h(z;t+1) of a one-dimensional beam in the next time step. These processings are respectively repeated for every lattice point and are further repeated for every time step. COPYRIGHT: (C)2009,JPO&INPIT |
