Una cercha plana que consta de cuatro barras inclinadas y una barra vertical está cargada en el nudo superior por medio de una fuerza vertical y una fuerza fuera del plano. Assuming the large deformation analysis and neglecting the self-weight, determine the normal forces of the members and the out-of-plane displacement of the upper node.
Una membrana se estira por medio de un pretensado isótropo entre dos radios de dos cilindros concéntricos que no se encuentran en un plano paralelo al eje vertical. Find the final minimum shape of the membrane - the helicoid - and determine the surface area of the resulting membrane. 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 membrana cilíndrica se estira por medio de un pretensado isótropo. Find the final minimal shape of the membrane - catenoid. Determine the maximum radial deflection of the membrane. 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 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.
Un cable está cargado por medio de una carga uniforme. This causes the deformed shape in the form of the circular segment. 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.
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.
Un tubo con una sección tubular está cargado por una presión interna. This internal pressure causes axial deformation of the pipe (the Bourdon effect). Determine the axial deformation of the pipe endpoint.
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.
Una viga articulada con una sección rectangular está sometida a una carga distribuida y desplazada verticalmente por la excentricidad. Considering the small deformation theory, neglecting the self‑weight, and assuming that the beam is made of isotropic elastic material, determine the maximum deflection.
Una barra de acero entre dos apoyos rígidos con un espacio está cargada por una diferencia de temperatura. While neglecting self‑weight, determine the total deformation of the rod and its internal axial force.
Una fuerza concentrada se aplica repentinamente en la mitad del vano de una viga simplemente apoyada en un momento dado. Considering only the small deformation theory, determine the maximum deflection of the beam.
Se aplica una fuerza concentrada durante un corto período de tiempo en la mitad del vano de una viga simplemente apoyada. Considering only the small deformation theory and assuming that the mass of the beam is concentrated at its mid‑span, determine its maximum deflection.
Una placa rectangular simplemente apoyada está sujeta a diferentes tipos de carga. Assuming only the small deformation theory and neglecting self-weight, determine the deflection at its centroid for each load type.
Una placa elíptica con un contorno de sujeción está sujeta a una carga transversal distribuida uniformemente. Assuming the small deformation theory and neglecting the self‑weight, the maximum out‑of‑plane deflection of the plate is determined.
Una placa triangular equilátera simplemente apoyada está sometida a una carga transversal distribuida uniformemente. Assuming the small deformation theory and neglecting self‑weight, the maximum out‑of‑plane deflection of the plate is determined.
Una placa de Kirchhoff rectangular simplemente apoyada se somete a una presión lateral uniforme y se estira mediante una carga distribuida. The maximum out-of-plane deflection is determined by assuming small deformations.
Una consola está cargada por una fuerza concentrada en su extremo libre. Determine the maximum deflection of the console using large deformation analysis.
Un voladizo está cargado por una fuerza transversal y axil en el extremo derecho y está completamente fijo en el extremo izquierdo. The problem is described by the following set of parameters. The problem is solved by using the geometrically linear analysis, second-order analysis, and large deformation analysis.
Una barra ligeramente inclinada está cargada por una fuerza concentrada, sostenida por un muelle en un extremo y apoyada en el otro extremo. Assuming large deformations and neglecting the member's self-weight, determine its maximum upward deflection.
A structure is made of two trusses of unequal length, which are embedded into the hinge supports. The structure is loaded by concentrated force. Se omite el peso propio. Determine the relationship between the loading force and the deflection, considering large deformations.
Un voladizo de pared delgada de un perfil QRO está completamente fijado en el extremo izquierdo y el alabeo está habilitado. The cantilever is subjected to torque. Small deformations are considered, and the self-weight is neglected. Determine the maximum rotation, primary moment, secondary moment, and warping moment. The verification example is based on the example introduced by Gensichen and Lumpe.
Un voladizo está cargado por un momento en su extremo libre. Using the geometrically linear analysis and large deformation analysis, and neglecting the beam's self-weight, determine the maximum deflections at the free end. The verification example is based on the example introduced by Gensichen and Lumpe.
Una barra con las condiciones de contorno dadas está cargada por el momento torsor y el esfuerzo axil. Neglecting its self-weight, determine the beam's maximum torsional deformation as well as its inner torsional moment, defined as the sum of a primary torsional moment and torsional moment caused by the normal force. Provide a comparison of those values while assuming or neglecting the influence of the normal force. The verification example is based on the example introduced by Gensichen and Lumpe.
Análisis en el dominio del tiempo de una viga en voladizo (sistema SDOF) excitada por una función periódica. Vertical deformations and accelerations calculated with direct integration and modal analysis in RF‑/DYNAM Pro - Forced Vibrations are compared with the analytical solution.
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.
Un cable o membrana de acero con pasadores en ambos extremos se carga mediante una carga distribuida. Neglecting its self-weight, determine the maximum deflection of the structure using the large deformation analysis.
Determine el momento flector que, actuando en el extremo libre del voladizo, doblará la barra en una forma circular. Neglecting the beam's self-weight, assuming the large deformation analysis, and loading the cantilever with the moment, determine its maximum deflections.
A structure is made of two trusses, which are embedded into the hinge supports. The structure is loaded by concentrated force. Se omite el peso propio. Determine the relationship between the loading force and the deflection, considering large deformations.
Un voladizo de perfil en I está apoyado en el extremo izquierdo y cargado por el par. The aim of this example is to compare the fixed support with the fork support and to investigate the behavior of some representative quantities. Comparison is also made to the solution by means of plates. Small deformations are considered, and the self-weight is neglected. Determine the rotation in the midpoint of the cantilever, and in case of the member entity with warping, determine the values of the primary torsional moment, the secondary torsional moment, and the warping moment both on the left end (point A) and the right end (point B).
Una placa ortótropa cuadrada en capas está completamente fijada en su punto medio y sometida a presión. Compare the deflections of the plate corners to check the correctness of the transformation.