如何从极坐标图绘制3 d图吗

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大卫餐桌 2022年8月9日

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这个问题直接联系

//www.tianjin-qmedu.com/matlabcentral/answers/1776095-how-to-plot-3d-plot-from-polar-plot

评论道: 威廉•罗斯 2022年8月17日

答:接受威廉•罗斯

我看着策划Titinium缓慢的概要文件的速度(逆)解决christoffell方程。

我已经设法得到一个极坐标图的但是想想象这个3 d。我为我极坐标图完成。

                          c11 = 162000000000;
                         
                          c12 = 92000000000;
                         
                          c44 = 47000000000;
                         
                          c13 = 69000000000;
                         
                          c33 = 181000000000;
                         
                          c66 = 35000000000
                         
                          ρ= 4430;
                         
                          (c11、c12 c13 C = 0, 0, 0;
                         
                          c12 c11、c13, 0, 0, 0;
                         
                          c13、c13 c33, 0, 0, 0;
                         
                          c44 0, 0, 0, 0, 0;
                         
                          c44 0, 0, 0, 0, 0;
                         
                          0,0,0,0,0,c66];
                         
                          phase_vel3 = 0 (1181);
                         
                          r = 0;
                         
                          为θ= -ππ/ 180:π
                         
                          r = r + 1;
                         
                          n = [cos(θ),0,罪(θ)];
                         
                          L_11 = (C (1,1) * n (1) ^ 2 + C (6,6) * n (2) ^ 2 + C (5,5) * n (3) ^ 2 + 2 * C (1,6) * n * n (2) (1) + 2 * C (1、5) * (1) n * n (3) + 2 * C (5、6) * n * n (2) (3));
                         
                          L_12 = (C (1,6) * n (1) ^ 2 + C (2,6) * n (2) ^ 2 + C (4、5) * n (3) ^ 2 + (C (1、2) + C (6,6)) * (1) n * n (2) + (C (1、4) + C (5、6)) * (1) n * n (3) + (C (4、6) + C (2、5)) * n (2) * n (3));
                         
                          L_13 = (C (1、5) * n (1) ^ 2 + C (4、6) * n (2) ^ 2 + C (3、5) * n (3) ^ 2 + (C (1、4) + C (5、6)) * (1) n * n (2) + (C (1、3) + C (5,5)) * (1) n * n (3) + (C (3、6) + C (4、5)) * n (2) * n (3));
                         
                          L_22 = (C n (6,6) * (1) ^ 2 + C (2, 2) * n (2) ^ 2 + C (4, 4) * n (3) ^ 2 + 2 * C (2,6) * n * n (2) (1) + 2 * C (4、6) * n * n (3) (1) + 2 * C (2、4) * n * n (2) (3));
                         
                          L_23 = (C (5、6) * n (1) ^ 2 + C (2、4) * n (2) ^ 2 + C (3、4) * n (3) ^ 2 + (C (4、6) + C (2、5)) * (1) n * n (2) + (C (3、6) + C (4、5)) * (1) n * n (3) + (C (2、3) + C (4, 4)) * n (2) * n (3));
                         
                          L_33 = (C (5,5) * n (1) ^ 2 + C (4, 4) * n (2) ^ 2 + C (3,3) * n (3) ^ 2 + 2 * C (4、5) * n * n (2) (1) + 2 * C (3、5) * n * n (3) (1) + 2 * C (3、4) * n * n (2) (3));
                         
                          Christoffel_mat = [L_11 L_12 L_13;
                         
                          L_12、L_22 L_23;
                         
                          L_13、L_23 L_33];
                         
                          (ev, d) = eig (Christoffel_mat);
                         
                          % eigvecs =极化向量
                         
                          pl = ev (:, 3);
                         
                          % eigvals ~缓慢(阶段)
                         
                          phase_vel3 (r) =√rho. / d (3、3));% quasi-longitudinal
                         
                          r = 0;
                         
                          为θ= -ππ/ 180:π
                         
                          r = r + 1;
                         
                          n = [cos(θ),0,罪(θ)];
                         
                          L_11 = (C (1,1) * n (1) ^ 2 + C (6,6) * n (2) ^ 2 + C (5,5) * n (3) ^ 2 + 2 * C (1,6) * n * n (2) (1) + 2 * C (1、5) * (1) n * n (3) + 2 * C (5、6) * n * n (2) (3));
                         
                          L_12 = (C (1,6) * n (1) ^ 2 + C (2,6) * n (2) ^ 2 + C (4、5) * n (3) ^ 2 + (C (1、2) + C (6,6)) * (1) n * n (2) + (C (1、4) + C (5、6)) * (1) n * n (3) + (C (4、6) + C (2、5)) * n (2) * n (3));
                         
                          L_13 = (C (1、5) * n (1) ^ 2 + C (4、6) * n (2) ^ 2 + C (3、5) * n (3) ^ 2 + (C (1、4) + C (5、6)) * (1) n * n (2) + (C (1、3) + C (5,5)) * (1) n * n (3) + (C (3、6) + C (4、5)) * n (2) * n (3));
                         
                          L_22 = (C n (6,6) * (1) ^ 2 + C (2, 2) * n (2) ^ 2 + C (4, 4) * n (3) ^ 2 + 2 * C (2,6) * n * n (2) (1) + 2 * C (4、6) * n * n (3) (1) + 2 * C (2、4) * n * n (2) (3));
                         
                          L_23 = (C (5、6) * n (1) ^ 2 + C (2、4) * n (2) ^ 2 + C (3、4) * n (3) ^ 2 + (C (4、6) + C (2、5)) * (1) n * n (2) + (C (3、6) + C (4、5)) * (1) n * n (3) + (C (2、3) + C (4, 4)) * n (2) * n (3));
                         
                          L_33 = (C (5,5) * n (1) ^ 2 + C (4, 4) * n (2) ^ 2 + C (3,3) * n (3) ^ 2 + 2 * C (4、5) * n * n (2) (1) + 2 * C (3、5) * n * n (3) (1) + 2 * C (3、4) * n * n (2) (3));
                         
                          Christoffel_mat = [L_11 L_12 L_13;
                         
                          L_12、L_22 L_23;
                         
                          L_13、L_23 L_33];
                         
                          (ev, d) = eig (Christoffel_mat);
                         
                          % eigvecs =极化向量
                         
                          pl = ev (:, 3);
                         
                          % eigvals ~缓慢(阶段)
                         
                          phase_vel3 (r) =√rho. / d (3、3));% quasi-longitudinal
                         
                          图
                         
                          极地(0:π/ 180:2 *π,1. / phase_vel3)