Where deck models "A" and "B" are subjected to a longitudinal tension of unit load the P stress, as shown by Plates 1A and 1B, near the central axis decreases fairly uniformly from about 0.8 near the clamp to zero at opening 2. The stiffness of the steel clamps applying the tension load introduces a transverse tension which increases to maximum value of about 0.2 for "A" and 0.3 for "B" at three to four feet from opening 2. This effect is due to the conditions of the laboratory equipment and would not exist in an actual ship structure. Beyond the maximum tension there is a rapid drop in the value of Q introduced by deformation of the plate by the openings. Q reaches a maximum negative value of -0.7 in Model "A", but the stiffness of the cross bulkhead near openings 4 and 5 and the presence of the coaming about opening 2 reduces this value to 0.4 for Model "B".
展开▼
