seinzumtode https://blog.hatena.ne.jp/seinzumtode/ how to code something https://seinzumtode.hatenadiary.jp/ clear; close all; clc; E = 206e9; d = 0.1; I = pi/64*d^4; m = 30; l = 2; a = l/2; b = l/2; k = 6*E*I*l/(a*b*(l^2-a^2-b^2)); nc = 60/(2*pi)*sqrt(k/m); fprintf('危険速度: %.0f [rpm]\n',nc); 実行結果 危険速度: 4294 [rpm] 190 <iframe src="https://hatenablog-parts.com/embed?url=https%3A%2F%2Fseinzumtode.hatenadiary.jp%2Fentry%2F2022%2F03%2F23%2F151504" title="軸の危険速度の計算 - how to code something" class="embed-card embed-blogcard" scrolling="no" frameborder="0" style="display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;"></iframe> https://cdn-ak.f.st-hatena.com/images/fotolife/s/seinzumtode/20220323/20220323151437.png Hatena Blog https://hatena.blog 2022-03-23 15:15:04 rich https://seinzumtode.hatenadiary.jp/entry/2022/03/23/151504 1.0 100%