英文:
Two masses connected by spring with error: setting an array element with a sequence
问题
我正在编写一个用Python模拟两个由弹簧连接的质点的代码。然而，不知何故，我总是遇到"ValueError: setting an array element with a sequence"错误。有人能帮助我找出问题在哪里吗？我已经查看了这个论坛上的其他答案，但没有帮助。以下是你的Python代码：
import numpy as npk = 1.95m1 = 0.1m2 = 0.3x10 = 0.03x20 = 0.01v10 = 0v20 = 0t0 = 0tf = 25dt = 0.05x0 = 5k1_drag = 0.2t = np.arange(t0, tf, dt)x1 = np.zeros_like(t)x2 = np.zeros_like(t)v1 = np.zeros_like(t)v2 = np.zeros_like(t)a1 = np.zeros_like(t)a2 = np.zeros_like(t)def F1(x1, x2, x0 = 5):return k*(x2 - x1 -x0) - (k1_drag/m1) * v1def F2(x1, x2, x0 = 5):return -k*(x2 - x1 - x0) - (k1_drag/m2) * v2x1[0] = x10x2[0] = x20v1[0] = v10v2[0] = v20t[0] = t0for i in range(1, len(t)):a1[i-1] = F1(x1[i-1], x2[i-1])a2[i-1] = F2(x1[i-1], x2[i-1])v1[i] = v1[i-1] + a1[i-1]*dtv2[i] = v2[i-1] + a2[i-1]*dtx1[i] = x1[i-1] + v1[i-1]*dtx2[i] = x2[i-1] + v2[i-1]*dtt[i] = t[i-1] + dt
英文:
I am working on a code simulating two masses connected by a spring in Python. However, somehow I always get the ValueError: setting an array element with a sequence. Can someone help me figuring out what the problem is here? I have gone through other answers on this forum but it did not help.
import numpy as npk = 1.95m1 = 0.1m2 = 0.3x10 = 0.03x20 = 0.01v10 = 0v20 = 0t0 = 0tf = 25dt = 0.05x0 = 5k1_drag = 0.2t = np.arange(t0, tf, dt)x1 = np.zeros_like(t)x2 = np.zeros_like(t)v1 = np.zeros_like(t)v2 = np.zeros_like(t)a1 = np.zeros_like(t)a2 = np.zeros_like(t)def F1(x1, x2, x0 = 5):return k*(x2 - x1 -x0) - (k1_drag/m1) * v1def F2(x1, x2, x0 = 5):return -k*(x2 - x1 - x0) - (k1_drag/m2) * v2x1[0] = x10x2[0] = x20v1[0] = v10v2[0] = v20t[0] = t0for i in range(1, len(t)):a1[i-1] = F1(x1[i-1], x2[i-1])a2[i-1] = F2(x1[i-1], x2[i-1])v1[i] = v1[i-1] + a1[i-1]*dtv2[i] = v2[i-1] + a2[i-1]*dtx1[i] = x1[i-1] + v1[i-1]*dtx2[i] = x2[i-1] + v2[i-1]*dtt[i] = t[i-1] + dt
答案1
得分: 1
"F1" 返回一个序列，无法赋值给数组元素。
英文:
F1 returns a sequence, which cannot be assigned to array element.
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