As a part of study on the distribution of stress on the fishing net, measurement of tensions which appear throughout the net when a statical load is imposed on was carried out.
The results obtained were as follows:
1) When a load is imposed on a knot of the net vertically, the shape of tension distribution becomes rhombic as shown in Fig. 1 (A-M). Now, if the tension which appears on the leg line starting directly from the point loaded is denoted by T, the following equation will be hold,
T/W=Kt+Kaexp(-k(n-1)) where Kt=t/W, Ka=a/W; t is the remained tension approached to a constant value by attenuation, a is the tension of the first leg minus t, k is the attenuation coefficient, W is the load imposed on, and n is the number of legs from the point loaded.
2) When a load is imposed on a knot of the net horizontally the shape of tension distribution becomes as shown in Fig. 2 (N-S). The same equation as the above will be applicable.