A cable is loaded by means of a uniform load. Výsledkem je deformovaný tvar kruhového segmentu. Determine the equilibrium force of the cable to obtain the given sag of the cable. The add-on module RF-FORM-FINDING is used for this purpose. Elastic deformations are neglected both in RF-FORM-FINDING and in the analytical solution; self-weight is also neglected in this example.
Prut s W-profilem podle ASTM A992 je vybrán tak, aby unesl vlastní tíhu 30 000 kips a užitné zatížení 90 000 kips v tahu. Verify the member strength using both LRFD and ASD.
Consider an ASTM A992 W 18×50 beam forspan and uniform dead and live loads as shown in Figure 1. Maximální jmenovitá výška prutu je 18 palců. The live load deflection is limited to L/360. The beam is simply supported and continuously braced. Verify the available flexural strength of the selected beam, based on LRFD and ASD.
Na obrázku 1 je znázorněn nosník ASTM A992 W 24×62 se smykem na konci 48 000 a 145 000 kips od vlastní tíhy a užitného zatížení. Verify the available shear strength of the selected beam, based on LRFD and ASD.
Velmi tuhé lano je zavěšeno mezi dvěma podporami. Determine the equilibrium shape of the cable (the catenary), consider the gravitational acceleration, and neglect the stiffness of the cable. Verify the position of the cable at the given test points.
Determine the maximum deflection of a three-dimensional block fixed at both ends. The block is divided in the middle: the upper half is made of an elastic material and the lower part is made of timber - an elasto-plastic othotropic material with the yield surface described according to the Tsai-Wu plasticity theory. Na rovinu procházející středem bloku působí svislý tlak.
Konzola je plně fixována na levém konci a zatížena příčnou silou a normálovou silou na pravém konci. The tensile strength is zero and the behavior in the compression remains elastic.