Solution C4-71 (Figure C4.7 condition 1 S.M. Targ 1989) Two homogeneous rectangular thin plates are rigidly connected (welded) at right angles to each other and secured with a spherical hinge (or thrust bearing) at point A, a cylindrical hinge ( bearing) at point B and weightless rod 1 (Fig. C4.0 - C4.7) or two bearings at points A and B and two weightless rods 1 and 2 (Fig. C4.8, C4.9); all rods are attached to the slabs and to the fixed supports with hinges. The dimensions of the slabs are indicated in the pictures; weight of the larger slab P1 = 5 kN, weight of the smaller slab P2 = 3 kN. Each of the plates is located parallel to one of the coordinate planes (the xy plane is horizontal). The plates are acted upon by a pair of forces with a moment M = 4 kN m, lying in the plane of one of the plates, and two forces. The values of these forces, their directions and points of application are indicated in table. C4; in this case, the forces F1 and F4 lie in planes parallel to the xy plane, the force F2 - in the plane parallel to xz, and the force F3 - in the plane parallel to yz. The points of application of forces (D, E, N, K) are located in the corners or in the middle of the sides of the slabs. Determine the reactions of the bonds at points A and B and the reaction of the rod (rods). When calculating, take a = 0.6 m.
Solution C4-71 is a structure of two homogeneous rectangular thin plates, rigidly connected at right angles to each other and secured by a spherical hinge at point A, a cylindrical hinge at point B and a weightless rod 1 or two weightless rods 1 and 2. The plates are located parallel coordinate planes, they are acted upon by a pair of forces with a moment M = 4 kN m, lying in the plane of one of the plates, and two forces with the indicated values, directions and points of application.
To calculate the reaction of bonds at points A and B and the reaction of the rod (rods), it is necessary to use the data from Table C4 and take the value a = 0.6 m.
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Solution C4-71 is probably a mathematical problem or exercise, which is described in Figure C4.7 in condition 1 of the book by S.M. Targa, published in 1989. Without access to this book, I cannot give a more detailed description, since I do not know exactly what problem it describes and what characteristics of this solution are important for a potential buyer. If you have additional information or specific questions, please ask and I will try to help you better.
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