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update link and rubberband structures

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Pim Nelissen
2025-10-24 12:51:38 +02:00
parent b229e9ec64
commit 394a8eba78
2 changed files with 13 additions and 6 deletions
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13
RubberBand.py
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@ -3,7 +3,10 @@ import numpy as np
from Link import Link from Link import Link
class RubberBand: class RubberBand:
def __init__(self, N, a=1.): # class attributes
k_B = 1
def __init__(self, N, a=1., T=1.):
""" """
RubberBand is a class that can simulate a rubber band with N RubberBand is a class that can simulate a rubber band with N
incompressible links of length a. incompressible links of length a.
@ -11,12 +14,18 @@ class RubberBand:
Parameters: Parameters:
N (int) The number of links. N (int) The number of links.
a (float) The fixed length of links. a (float) The fixed length of links.
T (float) Temperature of the system.
""" """
self.N = N self.N = N
self.a = a self.a = a
self.T = T
self.links = self.__sample_links() self.links = self.__sample_links()
def w(self, f, l):
beta = (self.k_B*self.T)**(-1)
return np.exp(beta*f*l)
@property @property
def length(self): def length(self):
return self.a * np.sum([l.direction for l in self.links]) return self.a * np.sum([l.direction for l in self.links])
@ -31,5 +40,3 @@ class RubberBand:
directions[samples < 0.5] = -1. directions[samples < 0.5] = -1.
directions = directions.astype(int) directions = directions.astype(int)
return [Link(d) for d in directions] return [Link(d) for d in directions]