Experiments with shock loads on steel wire ropes – closure

Experiments with shock loads on steel wire ropes – closure

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On page 77 of Wiek (1995) just below the formula which is used for the approximation of the drop height in the experiments described, it is already pointed out that the predictions of this formula are not very accurate. Table 2 presents results showing that the calculated values Fp range from 1.4 to 2.5 times the measured impact forces F;. lf the relevant values of the first tests are used in the formulas which are indicated by Babeu (1996) with (1) and (2), that means EA/1 = 182500 N/m, h -= 0.32 m and mg = 134 x 9.8 kgm/s2 , the result of the formula (2) will appear to be 3.5% more than the result of the formula (1 ). This means that the formula (2) described by Timoshenko (1945) satisfies the test conditions slightly less well than equation (1 ).

 Author(s): L. Wiek