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.
No exemplo de verificação, o cálculo de cargas de vento num edifício com cobertura de duas águas utilizando a norma EN 1991-1-4 é comparado com uma simulação CFD no RWIND Simulation. The building is defined according to the sketch, and the inflow velocity profile is taken according to the standard EN 1991-1-4.
No exemplo de verificação, o cálculo da carga de vento num edifício com cobertura plana utilizando a norma EN 1991-1-4 é comparado com uma simulação CFD no RWIND Simulation. The building is defined according to the sketch, and the inflow velocity profile is taken according to the standard EN 1991-1-4.
Uma membrana é esticada através de um pré-esforço isotrópico entre dois raios de dois cilindros concêntricos que não se encontram num plano paralelo ao eixo 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.
Uma membrana cilíndrica é esticada utilizando pré-esforço isotrópico. 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.
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 membrana esférica de balão é preenchida com gás com pressão atmosférica e volume definido (estes valores são utilizados apenas para a definição do modelo de EF). 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.
A pipe with a tubular cross-section is loaded by internal pressure. This internal pressure causes axial deformation of the pipe (the Bourdon effect). Determine a deformação axial do ponto de extremidade do tubo.
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.
A column is composed of a concrete section (rectangle 100/200) and a steel section (profile I 200). Está sujeito a uma força de compressão. Determine the critical load and corresponding load factor. The theoretical solution is based on the buckling of a simple beam. In this case, two regions have to be taken into account due to different moments of inertia and material properties.
A viga articulada de secção retangular é sujeita a cargas uniformes e deslocada verticalmente por excentricidade. Considering the small deformation theory, neglecting the self‑weight, and assuming that the beam is made of isotropic elastic material, determine the maximum deflection.
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.
No meio do vão de uma viga de apoio simples, é aplicada uma força concentrada num determinado momento no tempo. Considering only the small deformation theory, determine the maximum deflection of the beam.
Uma força concentrada é aplicada durante um curto período de tempo no centro de uma viga de apoio simples. Considering only the small deformation theory and assuming that the mass of the beam is concentrated at its mid‑span, determine its maximum deflection.
A placa retangular simplesmente apoiada é sujeita 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.
A placa elíptica com a borda encastrada é sujeita a uma carga transversal distribuída irregularmente. Assuming the small deformation theory and neglecting the self‑weight, the maximum out‑of‑plane deflection of the plate is determined.
A placa triangular equilateral simplesmente apoiada é carregada com uma carga transversal distribuída uniformemente. Assuming the small deformation theory and neglecting self‑weight, the maximum out‑of‑plane deflection of the plate is determined.
A placa retangular Kirchhoff apoiada de forma simples está sujeita a compressão lateral uniforme e é alongada por uma carga distribuída. The maximum out-of-plane deflection is determined by assuming small deformations.
Uma consola é carregada por força concentrada na sua extremidade livre. Determine the maximum deflection of the console using large deformation analysis.
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.
Uma barra ligeiramente inclinada é carregada com força concentrada, fixada por uma mola numa extremidade e apoiada na outra extremidade. Assuming large deformations and neglecting the member's self-weight, determine its maximum upward deflection.
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 viga em consola de parede fina feita de um perfil QRO está completamente fixada na extremidade esquerda e o empenamento é possibilitado. 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.
A consola é carregada por um momento na sua extremidade livre. 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.
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.
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.
Quatro pilares estão fixados na parte inferior e ligados por um bloco rígido na 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.
Um cabo de aço ou uma membrana com pinos nas duas extremidades é carregado por uma carga distribuída. Neglecting its self-weight, determine the maximum deflection of the structure using the large deformation analysis.