Considere una viga W 18 x 50 según ASTM A992 para el vano y cargas vivas y muertas uniformes como se muestra en la figura 1. La barra está limitada a un canto nominal máximo de 18 pulgadas. La flecha de la carga viva está limitada a L/360. La viga está apoyada y arriostrada continuamente. Verifique la resistencia a flexión disponible de la viga seleccionada, según LRFD y ASD.
Una estructura superficial simétrica se compone de ocho barras de celosía iguales, que están incrustadas en los apoyos de las articulaciones. The structure is loaded by a concentrated force and alternatively by imposed nodal deformation over the critical limit point when the snap-through occurs. Imposed nodal deformation is used in RFEM 5 and RSTAB 8 to obtain the full equilibrium path of the snap-through. The self-weight is neglected in this example. Determine the relationship between the actual loading force and the deflection, considering large deformation analysis. Evaluate the load factor at the given deflections.
Una membrana de globo esférico se llena con gas con presión atmosférica y volumen definido (estos valores se usan solo para la definición del modelo de elementos finitos). Determine the overpressure inside the balloon due to the given isotropic membrane prestress. 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.
Una estructura se compone de cuatro barras de celosía, que están incrustadas en apoyos de articulación. The structure is loaded by a concentrated force and alternatively by imposed nodal deformation over the critical limit point, when snap-through occurs. Imposed nodal deformation is used in RFEM 5 and RSTAB 8 to obtain the full equilibrium path of the snap-through. The self-weight is neglected in this example. Determine the relationship between the actual loading force and the deflection, considering large deformation analysis. Evaluate the load factor at given deflections.
Consider an ASTM A992 W 18×50 beam forspan and uniform dead and live loads as shown in Figure 1. La barra está limitada a un canto nominal máximo de 18 pulgadas. 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.
Una viga curva consta de dos vigas con una sección rectangular. The horizontal beam is loaded by distributed loading. While neglecting self-weight, determine the maximum stress on the top surface of the horizontal beam.
Un recipiente esférico de pared delgada está cargado por una presión interna. While neglecting self‑weight, determine the von Mises stress and the radial deflection of the vessel.
Un voladizo con una sección circular está cargado por una fuerza de flexión concentrada y un momento de torsión. The aim of this verification example is to compare the reduced stress according to the von Mises and Tresca theories.
Un recipiente de dos capas, de extremos abiertos y paredes gruesas está cargado por una presión interna y externa; por lo tanto, no hay tensión axil. While neglecting self‑weight, the radial deflection of the inner and outer radius, and the pressure (radial stress) in the middle radius is determined.
Un disco compacto (CD) gira a una velocidad de 10.000 rpm. Therefore, it is subjected to centrifugal force. The problem is modeled as a quarter model. Determine the tangential stress on the inner and outer diameters and the radial deflection of the outer radius.
Cuatro pilares están fijos en la parte inferior y conectados por un bloque rígido en la parte superior. The block is loaded by pressure and modeled by an elastic material with a high modulus of elasticity. The outer columns are modeled by linear elastic material and the inner columns by a stress-strain diagram with decaying dependence. Assuming only the small deformation theory and neglecting the structure's self-weight, determine its maximum deflection.
Una placa ancha con un agujero está cargada en una dirección por la tensión de tracción. The plate width is large with respect to the hole radius, and it is very thin, considering the state of the plane stress.