A estrutura é constituída por uma viga de secção em I e duas vigas treliçadas de tubos. The structure contains several imperfections and it is loaded by the force Fz. O peso próprio não é considerado neste exemplo. Determine the deflections uy and uz and axial rotation φx at the endpoint (Point 4). O exemplo de verificação é baseado no exemplo introduzido por Gensichen e Lumpe.
A viga contínua com quatro vãos é carregada por forças axiais e de flexão (substituindo as imperfeições). Todos os apoios são forquilha - o empenamento é livre. Determinar os deslocamentos uy e uz, os momentosMy , M z, Mω e MTpri e a rotação φx. O exemplo de verificação é baseado no exemplo introduzido por Gensichen e Lumpe.
Uma viga de betão armado foi dimensionada como viga de dois vãos em consola. A secção é variável ao longo do comprimento da consola (secção de secção variável). São calculados os esforços internos, assim como a armadura longitudinal e transversal necessária para o estado limite último.
No exemplo de validação atual, investigamos o coeficiente de pressão do vento (Cp) de uma cobertura plana e paredes de acordo com a norma ASCE7-22 [1]. Na secção 28.3 (Cargas de vento - sistema principal resistente à força de vento) e Figura 28.3-1 (caso de carga 1), existe uma tabela que mostra o valor de Cp para diferentes ângulos de cobertura.
Nos apoios da forquilha está integrada uma estrutura constituída por um perfil em I. The axial rotation is restricted on both ends while warping is enabled. The structure is loaded by two transverse forces in the middle. The verification example is based on the example introduced by Gensichen and Lumpe.
Uma treliça plana constituída por quatro barras inclinadas e uma barra vertical é carregada no nó superior através de uma força vertical e uma força fora do 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.
A sphere is subjected to a uniform flow of viscous fluid. A velocidade do líquido é considerada como infinita. The goal is to determine the drag force. The parameters of the problem are set so that the Reynolds number is small and the radius of the sphere is also small, thus the theoretical solution can be reached - Stokes flow (G. G. Stokes 1851).
A strut with a circular cross-section is supported according to four basic cases of Euler buckling and subjected to pressure force. Determine a carga de encurvadura crítica.
Este exemplo de verificação é baseado no exemplo de verificação 0122. A single-mass system without damping is subjected to an axial loading force. An ideal elastic-plastic material with characteristics is assumed. Determine the time course of the end-point deflection, velocity, and acceleration.
Uma estrutura plana simétrica é constituída por oito treliças idênticas encastradas em apoios articulados. 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.
A cable is loaded by means of a uniform load. Isto resulta numa forma deformada de um segmento circular. 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.
Uma estrutura é constituída por quatro treliças encastradas em apoios articulados. 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.
Um sistema de massa singular com amortecimento está sujeito a uma força de carga constante. Determine the spring force, damping force, and inertial force at the given test time. In this verification example, the Kelvin--Voigt dashpot (namely, a spring and a damper element in serial connection) is decomposed into its purely viscous and purely elastic parts, in order to better evaluate the reaction forces.
Um quarto de barra circular com uma secção retangular é carregado com uma força fora do plano. This force causes a bending moment, torsional moment, and transverse force. While neglecting self-weight, determine the total deflection of the curved beam.
A closely coiled helical spring is loaded by a compression force. The spring has middle diameter D, wire diameter d, and it consists of i turns. O comprimento total da mola é L. Determine the total deflection of the spring for the member model and one‑turn deflection for the solid model.
Um oscilador simples é composto por massa m (a ser considerada apenas na direção x-) e pela mola linear com a rigidez k. The mass is embedded on a surface with Coulomb friction and is loaded by constant-in-time axial and transverse forces.
A truss structure consists of three rods (one steel and two copper) joined by a rigid member. The structure is loaded by a concentrated force and a temperature difference. Determine a flecha total da estrutura, sem considerar o peso próprio.
Uma barra de aço entre dois apoios rígidos com um intervalo é carregada por uma diferença de temperatura. While neglecting self‑weight, determine the total deformation of the rod and its internal axial force.
A cantilever of rectangular cross‑section has a mass at the end. Além disso, é carregada por uma força axial. Calculate the natural frequency of the structure. Neglect the self‑weight of the cantilever and consider the influence of the axial force for the stiffness modification.
A estrutura de pórticos de dois pisos está sujeita a cargas sísmicas. The modulus of elasticity and cross‑section of the frame beams are much larger than those of the columns, so the beams can be considered rigid. The elastic response spectrum is given by the standard SIA 261/1:2003. Neglecting self-weight and assuming the lumped masses are at the floor levels, determine the natural frequencies of the structure. For each frequency obtained, specify the standardized displacements of the floors as well as equivalent forces generated using the elastic response spectrum according to the standard SIA 261/1.2003.
Na extremidade superior, está fixada uma barra com uma secção quadrada. The rod is loaded by self-weight. For comparison, the example is also modeled with the concentrated force load, the value of which is equal to the gravity. The aim of this verification example is to show the difference between these types of loading, although the total loading force is equal.
Este exemplo serve para ilustrar o plano. The application is shown on a two-story structure. The structure is loaded by means of lateral forces according to Figure 1. Determine the maximum deflection of the structure ux in the direction of the loading forces using both the diaphragm constraint and the plate model of the floor.
A cantilever is loaded by a transversal and an axial force on the right end and is fully fixed on the left end. O problema é descrito pelo seguinte conjunto de parâmetros. The problem is solved by using the geometrically linear analysis, second-order analysis, and large deformation analysis.
O modelo da estrutura é constituído por duas treliças de comprimento desigual que estão incorporadas nos apoios de articulação. The structure is loaded by concentrated force. The self-weight is neglected. Determine the relationship between the loading force and the deflection, considering large deformations.
A structure made of an I-profile is fully fixed on the left end and embedded into the sliding support on the right end. A estrutura é constituída por dois segmentos. The self-weight is neglected in this example. Determine the maximum deflection of the structure, the bending moment on the fixed end, the rotation of segment 2, and the reaction force at point B by means of the geometrically linear analysis and the second-order analysis. The verification example is based on the example introduced by Gensichen and Lumpe.
A member with the given boundary conditions is loaded by torsional moment and axial force. 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. Compare estes valores ao mesmo tempo que aceita ou não considera a influência da força axial. The verification example is based on the example introduced by Gensichen and Lumpe.
A long, thin beam is carrying a concentrated mass and is loaded by a time-dependent force. É apoiada de forma simples. The problem is described using the following parameters. Determine the deflections in the given test times.
Análise de histórico de tempo na viga em consola (sistema SDOF) excitada por uma função periódica. Vertical deformations and accelerations calculated with direct integration and modal analysis in RF‑/DYNAM Pro - Forced Vibrations are compared with the analytical solution.